NAVIGATION SYSTEM

• HEADINGS
  • Special Tools
  • Component Location Index
  • General Troubleshooting Information
    • General Operation
    • Anti-theft Feature
    • Symptom Diagnosis
    • Self-Inertial Navigation Limitations
    • Global Positioning System (GPS) Limitations
    • Muting Logic
    • LCD Display Unit Limitations
    • Symptom Duplication
    • Service Precautions
    • System Initialization
    • Entering Security Code
    • GPS initialization
    • Map Matching
    • Obtaining A Navigation DVD
  • Symptom Troubleshooting Index
  • System Description
    • Overview
      • System Diagram
    • Navigation Function
      • Function Diagram
        • Vehicle Speed Pulse
        • Charge Signal
        • Yaw Rate-Lateral Acceleration Sensor
        • Sensor Element Structure
        • Oscillation Gyro Principles
        • Operation
        • Global Positioning System (GPS)
        • Position detection Image with GPS satellite
        • Precision of GPS
        • GPS Antenna
        • GPS Receiver
        • Navigation Unit
        • Calculation of Vehicle Position
        • Map Matching Tuning
        • GPS Tuning
        • Distance Tuning
        • Route Guidance
        • Audio Guidance
        • DVD-ROM
        • Audio Unit
        • Display Unit
        • Microphone
        • Navigation/Voice control switch
        • Glossary
        • System Function Diagram
        • Diagnostic Function Diagram
    • Navigation Unit Inputs and Outputs for Connector A (20P)
    • Navigation Unit Inputs and Outputs for Connector B (14P)
    • Navigation Unit Inputs and Outputs for Connector C (8P)
    • Navigation Unit Inputs and Outputs for Connector E (2P)
    • Audio-HVAC Display Panel Inputs and Outputs for Connector C (10P)
    • Display Unit Inputs and Outputs for 20P Connector
    • Audio-HVAC Subdisplay Inputs and Outputs for 10P Connector
  • Circuit Diagram
    • Display unit connectors
    • Navigation unit connectors
    • Audio-HVAC subdisplay unit 10P connector
  • Symptom Troubleshooting
    • No picture is displayed
      • Diagnostic Test: Navi System Link
    • Picture is missing a color or tone or is an odd color
    • Picture has lines or rolls
      • Diagnostic Test: Monitor Check
    • Display unit buttons or touch screen buttons do not work or respond properly
    • GPS icon is white or not shown
      • Diagnostic Test: Navi System Link
    • Voice guidance cannot be heard, is broken up, or there is static
      • Diagnostic Test: Navi System Link
    • Voice control does not work/respond
    • Vehicle position icon constantly leaves road, moves erratically, or is very far from actual position
    • DVD screen error messages
      • Diagnostic Test: Car Status
    • Trip computer-no distance
      • Diagnostic Test: Car Status
    • Trip computer-no fuel information
      • Diagnostic Test: Navi System Link
    • Navigation cannot control HVAC by voice command
      • Diagnostic Test: Navi System Link
    • Display day/night mode does not work
      • Diagnostic Test: Car Status
    • System locks up or freezes constantly
      • Diagnostic Test: Unit Check
    • Vehicle icon wanders across the map when driving (does not follow a displayed road) or map or vehicle ICON spins
      • Diagnostic Test: Yaw Rate
    • Vehicle icon moves by itself or spins when parked
      • Diagnostic Test: Functional Setup
    • Navigation stays on with ignition switch OFF
    • Navigation cannot control audio system
    • Navigation cannot control XM radio
    • Audio-HVAC subdisplay unit does not work properly
    • Navigation frequently asks for anti-theft code and needs GPS initialization
  • System Diagnostic Mode
    • Start-up procedure and Diagnosis Menu
    • Navi System Link
    • F-CAN System Link
    • B-CAN System Link
    • Monitor Check
      • RGB Color
      • Gray Tone
      • White Raster
      • Black Raster
      • Test Pattern
      • Monitor Adjustment
      • Touch Panel Check
    • Touch Panel Calibration
    • Unit Check
      • Display
      • Radio
      • Navi ECU
      • PC Card info
    • Car Status
    • GPS Information
    • GPS Detail
    • Yaw Rate
    • Tire Calibrate
    • Functional Setup
      • Trip Information
      • Trip Calibrate
      • Solar Angle
      • Log Data
      • GPS Offset Time
      • Mic Level
      • VSP Count
      • H/U Time Send
      • Demonstration
    • Version
    • Error Message Table
  • Forced Starting of Display
  • DVD-ROM Replacement
  • Navigation Unit Removal/Installation
  • GPS Antenna Removal/Installation
  • Voice Control Switch Test/Replacement
• FIGURES
  • Fig. 1: Identifying Special Tools
  • Fig. 2: Identifying Navigation System Component Location
  • Fig. 3: GPS Screen Display
  • Fig. 4: Navigation Screen Display
  • Fig. 5: Navigation System Diagram
  • Fig. 6: Navigation System Function Diagram
  • Fig. 7: Identifying Navigation Unit And ECM/PCM (Vehicle Speed Pulse)
  • Fig. 8: Identifying Fan Control Logic And ECM/PCM (Charge Signal)
  • Fig. 9: Enlarged View Of Sensor Element And Sensor Element Top View
  • Fig. 10: Identifying Position Detection Image With GPS Satellite
  • Fig. 11: Navigation System Display Unit
  • Fig. 12: System Function Diagram
  • Fig. 13: Diagnostic Function Diagram
  • Fig. 14: Identifying Navigation Unit Inputs And Outputs For Connector A (20P)
  • Fig. 15: Identifying Navigation Unit Inputs And Outputs For Connector B (14P)
  • Fig. 16: Identifying Navigation Unit Inputs And Outputs For Connector C (8P)
  • Fig. 17: Identifying Navigation Unit Inputs And Outputs For Connector E (2P)
  • Fig. 18: Identifying Audio-HVAC Display Panel Inputs And Outputs For Connector C (10P)
  • Fig. 19: Identifying Display Unit Inputs And Outputs For 20P Connector
  • Fig. 20: Identifying Audio-HVAC Subdisplay Inputs And Outputs For 10P Connector
  • Fig. 21: Navigation System Circuit Diagram (1 Of 2)
  • Fig. 22: Navigation System Circuit Diagram (2 Of 2)
  • Fig. 23: Identifying Display Unit Connectors B (20P) And Display Unit Connectors A (10P)
  • Fig. 24: Navigation Unit Connectors Terminal
  • Fig. 25: Identifying Audio-HVAC Subdisplay Unit 10P Connector
  • Fig. 26: Measuring Voltage Between Body Ground And Navigation Unit Connector C (8P) Terminals No. 1 And No. 2
  • Fig. 27: Checking Continuity Between Navigation Unit Connector C (8P) Terminal No. 4 And Body Ground
  • Fig. 28: Measuring Voltage Between Body Ground And Display Unit 20P Connector Terminal No. 1 And No. 2
  • Fig. 29: Identifying Navigation Unit Connector A (20P)
  • Fig. 30: Identifying Display Unit 20P Connector Terminal
  • Fig. 31: Identifying Display Unit 20P Connector Terminal
  • Fig. 32: Measuring Voltage Between Body Ground And Display Unit 20P Connector Terminal No. 1 And No. 2
  • Fig. 33: Checking Continuity Between Display Unit 20P Connector Terminal No. 10 And Body Ground
  • Fig. 34: Checking Continuity Between Body Ground And Display Unit 20P Connector Terminal 3, 5, 13 And 15
  • Fig. 35: Checking Continuity Between Display Unit 20P Connector Terminal 4 And Terminals 3 And 13
  • Fig. 36: Checking Continuity Between Display Unit 20P Connector Terminal 14 And Terminals 5 And 15
  • Fig. 37: Checking Continuity Between Display Unit 20P Connector Terminal 5 And Navigation Unit Connector A (20P) Terminal 10
  • Fig. 38: Checking Continuity Between Display Unit 20P Connector Terminal 15 And Navigation Unit Connector A (20P) Terminal 20
  • Fig. 39: Checking Continuity Between Display Unit 20P Connector Terminal 3 And Audio Unit Connector B(14P) Terminal 9
  • Fig. 40: Checking Continuity Between Display Unit 20P Connector Terminal 13 And Audio Unit Connector B (14P) Terminal 10
  • Fig. 41: Checking Continuity Between Body Ground And Navigation Unit Connector B (14P) Terminals 5, 12
  • Fig. 42: Checking Continuity Between Navigation Unit Connector B (14P) Terminal 11 And Terminals 5 And 12
  • Fig. 43: Checking Continuity Between Navigation Unit Connector B (14P) Terminal 5 And Audio Unit Connector A (20P) Terminal 13
  • Fig. 44: Checking Continuity Between Navigation Unit Connector B (14P) Terminal 12 And Audio Unit Connector A (20P) Terminal 12
  • Fig. 45: Identifying Diagnostic Menu Screen
  • Fig. 46: Navigation Screen Display - Navi System Link
  • Fig. 47: Navigation Screen Display - F-Can System Link
  • Fig. 48: Navigation Screen Display - Gray Tone
  • Fig. 49: Navigation Screen Display - White Raster
  • Fig. 50: Navigation Screen Display - RGB Color
  • Fig. 51: Navigation Screen Display - Gray Tone
  • Fig. 52: Navigation Screen Display - White Raster
  • Fig. 53: Navigation Screen Display - Black Raster
  • Fig. 54: Navigation Screen Display - Test Pattern
  • Fig. 55: Navigation Screen Display - Monitor Adjustment
  • Fig. 56: Navigation Screen Display - Return
  • Fig. 57: Navigation Screen Display - Push Map
  • Fig. 58: Navigation Screen Display - Select Cheek Units
  • Fig. 59: Navigation Screen Display - ROM And RAM
  • Fig. 60: Navigation Screen Display - Radio
  • Fig. 61: Navigation Screen Display - ROM (Application)
  • Fig. 62: Navigation Screen Display - PC Card Info
  • Fig. 63: Navigation Screen Display - PC Card Info
  • Fig. 64: Navigation Screen Display - Car Status
  • Fig. 65: Navigation Screen Display - GPS Information
  • Fig. 66: Navigation Screen Display - GPS Detail
  • Fig. 67: Navigation Screen Display - Yaw Rate
  • Fig. 68: Navigation Screen Display - Tire-Calibrate
  • Fig. 69: Navigation Screen Display - Functional Setup
  • Fig. 70: Navigation Screen Display - Trip Information
  • Fig. 71: Navigation Screen Display - Trip Calibrate
  • Fig. 72: Navigation Screen Display - Solar Angle
  • Fig. 73: Navigation Screen Display - Log Data
  • Fig. 74: Navigation Screen Display - Log Data
  • Fig. 75: Navigation Screen Display - GPS Offset Time
  • Fig. 76: Navigation Screen Display - Mic Level
  • Fig. 77: Navigation Screen Display - VSP Count
  • Fig. 78: Navigation Screen Display - H/U Time Send
  • Fig. 79: Navigation Screen Display - Demonstration
  • Fig. 80: Navigation Screen Display - Version
  • Fig. 81: Identifying SCS Service Connector And Navigation Service Check Connector
  • Fig. 82: Identifying Front Cover And Navigation Unit
  • Fig. 83: Identifying Bracket, Navigation Unit Connectors, Navigation Unit And Screws
  • Fig. 84: Identifying GPS Antenna Connector And GPS Antenna
  • Fig. 85: Identifying Voice Control Switch Cover, Voice Control Switch And Screw
• TABLES
  • SYMPTOM TROUBLESHOOTING INDEX
  • GPS ICON DESCRIPTION CHART
  • ITEM REFERENCE CHART
  • SYMPTOM REFERENCE
  • SYMPTOM REFERENCE
  • SYMPTOM REFERENCE
  • SYMPTOM REFERENCE
  • SYMPTOM REFERENCE
  • SYMPTOM REFERENCE
  • SYMPTOM REFERENCE
  • WIRE COLOR SPECIFICATION
  • WIRE COLOR SPECIFICATION
  • PROBLEM SYMPTOM REFERENCE
  • CAR STOPPED SPECIFICATION
  • CAR TURNING SPECIFICATION
  • SCREEN ERROR MESSAGE REFERENCE
  • RESISTANCE REFERENCE

2004-05 ACCESSORIES AND EQUIPMENT

Navigation System - TSX

Special Tools

Fig. 1: Identifying Special Tools

Component Location Index

Fig. 2: Identifying Navigation System Component Location

General Troubleshooting Information

General Operation

Refer to the Navigation System Manual for the navigation system operating procedures.

Anti-theft Feature

The navigation system and audio unit have a coded theft protection circuit. Make sure you have the anti-theft security codes number before;

• Disconnecting the battery.
• Disconnecting the navigation unit 8P connector.
• Removing the No. 7 (10 A) fuse from the under-dash fuse/relay box.

After service, reconnect power to the navigation unit, and turn the ignition switch ON (II). Enter the 4-digit anti-theft security code, then select "Done".

If the code cannot be found, use the interactive Network (;N) to look it up. You will need the serial number from the navigation unit. You can view the serial number in the Navi ECU diagnostic screen or find it on a label on the under side of the navigation unit located in the trunk (see TOUCH PANEL CALIBRATION ).

When replacing the navigation unit, be sure to give the client the new anti-theft security code.

Symptom Diagnosis

Certain circumstances and system limitations will result in occasional vehicle positioning errors. Some clients may think this indicates a problem with the navigation system when, in fact, the system is normal. Keep the following items in mind when interviewing clients about symptoms of the navigation system.

Self-Inertial Navigation Limitations

The limitations of the self-inertial portion of the navigation system (the yaw rate sensor and the vehicle speed signal) can cause some discrepancies between the vehicle's actual position and the indicated vehicle position (GPS vehicle position).

The following circumstances may cause vehicle positioning errors:

• Moving the vehicle with the engine stopped and the vehicle stopped, such as by ferry or tow truck, or if the vehicle is spun on a turn table.
• Tire slippage, changes in tire rolling diameters, and some driving situations may cause discrepancies in travel distances. Examples of this include:
  • Continuous tire slippage on a slippery surface
  • Driving with snow chains mounted
  • Abnormal tire pressure
  • Incorrect tire size
  • Frequent lane changes across a wide highway
  • Continuous driving on a straight or gently curving highway
  • Very bumpy roads
• Tolerances in the system and map inaccuracies sometimes limit how precisely the vehicle position is indicated. Examples of this include:
  • Driving on roads not shown on the map (map matching is not possible)
  • Driving on a road that winds in one direction, such as a loop bridge, an interchange, or a spiral parking garage
  • Driving on a road with a series of sharp hair-pin turns
  • Driving near a gradual highway exit or transition
  • Driving on one of two close parallel roads
  • Making many 90 degree turns

Global Positioning System (GPS) Limitations

The GPS cannot detect the vehicle's position or elevation during the following instances:

• For the first 5 to 10 minutes after reconnecting the battery (This can take as long as 45 minutes).
• When the satellite signals are blocked by tall buildings, mountains, tunnels, large trees, inside parking structures or large trucks.
• When the GPS antenna is blocked by metallic window tinting or by an object placed above it in the vehicle. The GPS antenna requires a clear unobstructed view of the sky.
• When there is no satellite signal output (Signal output is sometimes stopped for satellite servicing).
• When the satellite signals are blocked by the operation of some electronic aftermarket accessories including, but not limited to non-OEM in-dash entertainment units (radio, CD players/changers, radar detectors and theft recovery systems), and cell phones placed near the navigation systems.

The accuracy of GPS is reduced during these instances:

• Metallic window tinting above the GPS antenna.
• When only three satellite signals can be received (Four satellite signals are required for accurate positioning).
• When the satellite control centers are experiencing problems.
• When driving near high tension power lines.
• When the satellite signals are blocked by the operation of some electronic aftermarket accessories including, but not limited to non-OEM in-dash entertainment units (radio, CD players/changers, radar detectors and theft recovery systems), and cell phones placed near the navigation system.

Muting Logic

Whenever the navigation system is giving guidance, the front speakers are muted. When the voice control system is being used, all of the speakers are muted.

LCD Display Unit Limitations

• In cold temperatures, the display may stay dark for the first 2 or 3 minutes until it warms up.
• When the display is too hot because of direct summer sunlight, it will remain dark until the temperature drops (You may see an error message displayed stating this fact).
• When the humidity is high and the interior temperature is low, the display may appear cloudy. The display will clear up after some use.
• Fingerprints on the touch panel may sometimes be noticeable because of the panel's low-reflection coating. Clean the screen with a soft, damp cloth. You may use a mild cleaner intended for eye glasses or computer screens. To avoid scratching the panel, do not rub too hard, or use abrasive cleaners, or shop towels.
• The touch panel consists of a touch sensitive resistive membrane covering the display. Unlike previous systems, you must actually touch the display to activate it. Never use hard or sharp implements to operate the screen because you risk damaging the sensing membrane. If a touch switch does not function immediately, shift your finger slightly, and touch it again.

NOTE:

The display is unaffected by sunlight, contrary to previous displays.

Symptom Duplication

• When the symptom can be duplicated, verify that it is not a characteristic of the system. Review the navigation manual and compare it to a known-good vehicle (with the same software and database), under the same conditions. If the symptom is not the same as the known-good vehicle, follow the self-diagnostic procedures and the appropriate troubleshooting procedures.
• When the symptom does not reappear or only reappears intermittently, ask the client about the conditions when the symptom occurred.
  • Always ask the client to demonstrate the problem.
  • Try to establish possible user error or misunderstanding of the system.
  • Try to establish if outside interference may have been the cause.
  • Try to duplicate the symptom under the same conditions the client experienced.
  • Vibration, temperature extremes, and moisture (dew, humidity) are factors that are difficult to duplicate.
  • Inspect the vehicle for after-market electronic devices (vehicle locators, amps, radar detectors, etc) that may be hidden.

Service Precautions

• If the navigation unit needs to be replaced, inform the client that personal information in the navigation system will be lost. If possible, have the client record their personal information before the unit is replaced.
• Before disconnecting the battery, make sure you have the anti-theft codes for the audio and the navigation system, and write down the audio presets. Also obtain any PGM-FI or transmission DTCs and freeze frame date (which will be lost when the ECM/PCM loses power).
• When the battery is disconnected, the internal GPS clock is reset to "0:00". The clock will reset to the correct time after the system finishes GPS initialization.
• After reconnecting the battery, you have to wait to get the initial signal from the satellite. It will take from 10 to 45 minutes.
• Before returning the vehicle to the client, enter the audio and navigation anti-theft security code, then enter the audio presets, and set the clock.

System Initialization

If for any reason, you lose power to the navigation system (like the battery was disconnected). The navigation system will require initialization. Once completed, your system will be ready to use.

This initialization requires the following:

• Entering the 4-digit anti-theft security code to "unlock" the system
• GPS initialization (may not be needed depending of the length of time the system was without power)
• Map matching to align the GPS to a location on the map

Entering Security Code

The navigation system and audio unit have a coded theft protection circuit. Make sure you have the anti-theft security codes number before;

• Disconnecting the battery
• Disconnecting the navigation unit 8P connector
• Removing the No. 7 (10 A) fuse from the under-dash fuse/relay box

After service, reconnect power to the navigation unit, and turn the ignition switch ON (II). Enter the 4-digit anti-theft security code, then select "Done".

When replacing the navigation unit or audio unit, be sure to give the client the new anti-theft security code.

GPS initialization

Depending on the length of time the battery was disconnected, your system may require GPS initialization. If it does, the following screen appears:

Fig. 3: GPS Screen Display

If this procedure is not necessary, the system proceeds directly to the Disclaimer screen. During initialization, the system searches for all available GPS satellites, and obtains their orbital information. During this procedure the vehicle should be out in the open with a clear view of the sky.

If the navigation system finds the satellites properly, this box clears, and changes to the Disclaimer screen. If within 10 minutes the system fails to locate a sufficient number of satellites to locate your position, the following screen appears.

Fig. 4: Navigation Screen Display

After 30 minutes with this screen is displayed, turn off the engine, then restart the vehicle. If you now see the Disclaimer screen, the GPS initialization is complete.

NOTE:

The average acquiring time is less than 10 minutes, but it can take as long as 45 minutes. If the system is still unable to acquire a signal, follow the instructions on the screen. If this screen appears again, go to troubleshooting for the GPS ICON IS WHITE OR NOT SHOWN .

Map Matching

This part of the initialization matches the GPS coordinates with a road on the map screen. To perform this part of the procedure, ensure that the navigation system is displaying a map, and drive the vehicle on a mapped road shown on the map screen. Do not enter a destination at this time. When the name of the current road you are driving on, appears at the bottom of the screen, the entire procedure is complete. Your system is now ready to use.

Obtaining A Navigation DVD

If the Navigation DVD is lost or damaged, or you need a yearly updated DVD, you have 2 ways to purchase one. You can either call (888) 549-3798, or order on-line at www.acura.com.

Both methods require a credit card. The DVD for this model has an orange label, and cannot be ordered through the parts system. The following DVDs will not work in this navigation system:

• Earlier model navigation DVDs (black label)
• Map software programs manufactured by other companies
• DVD movies, or DVDs containing audio recordings

Update DVDs are available for purchase usually in the fall of each year. They may contain the following:

• Enhanced maps and points of interest (POI) coverage
• Fixes for minor software bugs
• Additional features

NOTE:

Updating is optional, and there is no program to provide free DVDs containing yearly mapping updates. Map matching must be done any time the DVD is removed or replaced.

Symptom Troubleshooting Index

SYMPTOM TROUBLESHOOTING INDEX

Symptom	Diagnostic procedure	Also check for
Navigation system stays on the GPS initialization screen	System Initialization (see GPS INITIALIZATION )	Navigation unit GPS antenna/cable is disconnected or damaged Harness/fuses/switches
No picture is displayed	Symptom Troubleshooting (see SYMPTOM TROUBLESHOOTING ) and system limitations	Navigation unit Display unit Harness/fuses/switches
Address cannot be found or system gives poor routing	Verify proper operation, using the navigation system manual
Vehicle position icon constantly leaves road, moves erratically, or is very far from actual position	Symptom Troubleshooting (see VEHICLE POSITION ICON CONSTANTLY LEAVES ROAD, MOVES ERRATICALLY, OR IS VERY FAR FROM ACTUAL POSITION )	Navigation unit GPS antenna/cable ECM/PCM (speed and fuel pulses) Harness/fuses/switches
Picture is missing a color or tone or is an odd color	Symptom Troubleshooting (see PICTURE IS MISSING A COLOR OR TONE OR IS AN ODD COLOR )	Navigation unit Harness/fuses/switches
Picture has lines or rolls	Symptom Troubleshooting (see PICTURE HAS LINES OR ROLLS )	Navigation unit Aftermarket accessories Display unit Harness/fuses/switches
Display unit buttons or touch screen buttons do not work or respond properly	Symptom Troubleshooting (see DISPLAY UNIT BUTTONS OR TOUCH SCREEN BUTTONS DO NOT WORK OR RESPOND PROPERLY )	Display unit Harness/fuses/switches
GPS icon is white or not shown	Symptom Troubleshooting (see GPS ICON IS WHITE OR NOT SHOWN )	Navigation unit GPS antenna/cable Harness/fuses/switches
Voice guidance cannot be heard, is broken up, or there is static	Symptom Troubleshooting (see VOICE GUIDANCE CANNOT BE HEARD, IS BROKEN UP, OR THERE IS STATIC )	Navigation unit Audio unit/amplifier Harness/fuses/switches
Voice control does not work/ respond	Symptom Troubleshooting (see VOICE CONTROL DOES NOT WORK/RESPOND )	Navigation unit Microphone/steering buttons Harness/fuses/switches
DVD screen error messages	Symptom Troubleshooting (see DVD SCREEN ERROR MESSAGES )	Navigation unit Display unit DVD
Trip computer-no distance	Symptom Troubleshooting (see TRIP COMPUTER-NO DISTANCE )	ECM/PCM (speed and fuel pulses) Harness/fuses/switches
Trip computer-no fuel information	Symptom Troubleshooting (see TRIP COMPUTER-NO FUEL INFORMATION )	Gauge control module (CAN) Harness/fuses/switches
Navigation cannot control HVAC by voice command	Symptom Troubleshooting (see NAVIGATION CANNOT CONTROL HVAC BY VOICE COMMAND )	Display unit Harness/fuses/switches
Display day/night mode does not work	Symptom Troubleshooting (see DISPLAY DAY/NIGHT MODE DOES NOT WORK )	Display unit Gauge control module (CAN) Harness/fuses/switches
System locks up or freezes constantly	Symptom Troubleshooting (see SYSTEM LOCKS UP OR FREEZES CONSTANTLY )	Navigation unit Harness/fuses/switches DVD
Vehicle icon wanders across the map when driving (does not follow a displayed road) or map or vehicle ICON spins	Symptom Troubleshooting (see VEHICLE ICON WANDERS ACROSS THE MAP WHEN DRIVING (DOES NOT FOLLOW A DISPLAYED ROAD) OR MAP OR VEHICLE ICON SPINS )	Navigation unit
Vehicle icon moves by itself or spins when parked	Symptom Troubleshooting (see VEHICLE ICON MOVES BY ITSELF OR SPINS WHEN PARKED )
Navigation display stays on with ignition switch OFF	Symptom Troubleshooting (see NAVIGATION STAYS ON WITH IGNITION SWITCH OFF )	Harness/fuses/switches
Navigation cannot control audio system	Symptom Troubleshooting (see NAVIGATION CANNOT CONTROL AUDIO SYSTEM )	Display unit Harness
Navigation cannot control XM radio	Symptom Troubleshooting (see NAVIGATION CANNOT CONTROL XM RADIO )	Display unit Audio unit/amplifier
Audio-HVAC subdisplay unit does not work properly	Symptom Troubleshooting (see AUDIO-HVAC SUBDISPLAY UNIT DOES NOT WORK PROPERLY )	Navigation unit Subdisplay unit Harness/fuses/switches
Audio-HVAC subdisplay unit does not match time in set-up	Make sure H/U Time Send is ON. Go to H/U Time Send under functional set up (see FUNCTIONAL SETUP )
Time is not correct	Reset Time Adjustment in Set-up.
Navigation frequently asks for anti-theft code and needs GPS initialization	Symptom Troubleshooting (see NAVIGATION FREQUENTLY ASKS FOR ANTI-THEFT CODE AND NEEDS GPS INITIALIZATION )	Navigation unit Harness/fuses/switches
Some set-up and information functions of the navigation system are grayed-out and do not work	Client did not select "OK" from Disclaimer screen. Refer to SYSTEM FUNCTION DIAGRAM
Previous Destinations button is dim and not selectable in the Enter destination by screen (grayed-out)	The vehicle may be new, or the client deleted the destination. Enter a destination, and allow the system to route it. After the trip, the previous destinations button will be selectable.
Today's Destinations button is dim and not selectable in the Enter destination by screen (grayed-out)	The client has not entered a group of locations for Today's Destinations. This is normal. The button is only selectable if the client is using this function.
The navigation anti-theft code card is lost or missing	See anti-theft feature (see ANTI-THEFT FEATURE ).
The vehicle icon lags behind when the vehicle turns	See self-internal navigation limitations (see SELF-INERTIAL NAVIGATION LIMITATIONS ).	Aftermarket accessories connected to the system GPS antenna/cable
Navigation screen is darker than normal or takes time to start up when it is cold	See LCD display unit limitations (see LCD DISPLAY UNIT LIMITATIONS ).
The navigation clock is off by 1 to 3 hours after replacing the navigation unit	See service precautions (see SERVICE PRECAUTIONS ).	Perform map matching (see MAP MATCHING ). GPS antenna/cable Check and adjust the clock settings
OK cannot be selected at the disclaimer screen and the screen turns black	Refer to the troubleshooting for navigation display buttons or touch screen buttons do not work or respond properly (see DISPLAY UNIT BUTTONS OR TOUCH SCREEN BUTTONS DO NOT WORK OR RESPOND PROPERLY ).
A new navigation DVD is needed	See obtaining a navigation DVD (see OBTAINING A NAVIGATION DVD ).

System Description

Overview

The navigation system is a highly-sophisticated, hybrid locating system that uses satellites and a map database to show where the vehicle is and to help guide you to a desired destination.

The navigation system receives signals from the global positioning system (GPS), a network of 24 satellites in orbit around the earth. By receiving signals from several of these satellites, the navigation system can determine the latitude, longitude, and elevation of the vehicle. In addition, signals from the system's yaw rate sensor and the ECM/PCM (vehicle speed pulse) enable the system to keep track of the vehicle's direction and speed of travel.

This hybrid system has advantages over a system that is either entirely self-contained or one that relies totally on the GPS. For example, the self-contained portion of the system can keep track of vehicle position even when satellite signals cannot be received. When the navigation system is on, the GPS can keep track of the vehicle position even when the vehicle is transported by ferry.

The navigation system applies all location, direction, and speed information to maps and calculates a route to the destination entered. As you drive to that destination, the system provides both visual and audio guidance.

This navigation system also has voice recognition that allows voice control of most of the navigation functions. The TALK and BACK buttons on the steering wheel activate the voice control. The voice control also allows control of the audio and climate control.

The navigation system provides a trip computer function. The fuel economy display is calculated by data provided by the ECM/PCM. The ECM/PCM provides fuel pulses via the F-CAN bus, and a dedicated speed signal.

The illumination signal is used by the navigation unit to automatically switch the display between Night and Day brightness modes when Display is set to Auto. When the instrument panel brightness control is set to full brightness, the navigation system stays in the Day mode, even with the headlights on. Display unit button illumination is supplied through the audio unit.

The GA-NET bus provides communication between the navigation unit and the display unit. This bus also links the components in the audio-HVAC display module. The bus is used to pass button and touch-screen commands to the navigation unit. In addition, muting and voice control commands are sent to the display unit and the audio and climate control systems for processing. The audio unit uses this bus to control the XM receiver or other accessories.

NOTE:

When installing factory audio accessories, always ensure that the GA-NET bus is re-connected.

System Diagram

Fig. 5: Navigation System Diagram

Navigation Function

The navigation system is composed of the navigation unit, the ECM/PCM (vehicle speed signal), the GPS antenna, microphone, voice control switch, audio unit, climate control unit, audio-HVAC subdisplay unit, and the display unit.

Function Diagram

Fig. 6: Navigation System Function Diagram

Vehicle Speed Pulse

The vehicle speed pulse is sent by the ECM/PCM. The ECM/PCM receives a signal from the countershaft speed sensor, then it processes the signal and transmits it to the speedometer and other systems.

Fig. 7: Identifying Navigation Unit And ECM/PCM (Vehicle Speed Pulse)

Charge Signal

The ECM/PCM sends a charge signal to the navigation unit via F-CAN. A thermister inside the navigation unit monitors the units internal temperature. This information combined with charge signal determines the control units internal cooling fan operation.

Fig. 8: Identifying Fan Control Logic And ECM/PCM (Charge Signal)

Yaw Rate-Lateral Acceleration Sensor

The yaw rate-lateral acceleration sensor (located in the navigation unit) detects the direction change (angular speed) of the vehicle. The sensor is an oscillation gyro built into the navigation unit.

Sensor Element Structure

The sensor element is shaped like a tuning fork, and it consists of the piezoelectric parts, the metal block, and the support pin. There are four piezoelectric parts: one to drive the oscillators, one to monitor and maintain the oscillation at a regular frequency, and two to detect angular velocity. The two oscillators, which have a 90-degree twist in the center, are connected at the bottom by the metal block and supported by the support pin. A detection piezoelectric part is attached to the top of each oscillator. The driving piezoelectric part is attached to the bottom of one oscillator, and the monitoring piezoelectric part is attached to the bottom of the other oscillator.

Oscillation Gyro Principles

The piezoelectric parts have "electric/mechanical transfer characteristics." They bend vertically when voltage is applied to both sides of the parts, and voltage is generated between both sides of the piezoelectric parts when they are bent by an external force. The oscillation gyro functions by using this characteristic of the piezoelectric parts and "Coriolis force." (Coriolis force deflects moving objects as a result of the earth's rotation.) In the oscillation gyro, this force moves the sensor element when angular velocity is applied.

Operation

1. The driving piezoelectric part oscillates the oscillator by repeatedly bending and returning when an AC voltage of 6 kHz is applied to the part. The monitoring-side oscillator resonates because it is connected to the driving-side oscillator by the metal block.
2. The monitoring piezoelectric part bends in proportion to the oscillation and outputs voltage (the monitor signal). The navigation unit control circuit controls the drive signal to stabilize the monitor signal.
3. When the vehicle is stopped, the detecting piezoelectric parts oscillate right and left with the oscillators, but no signal is output because the parts are not bent (no angular force)
4. When the vehicle turns to the right, the sensor element moves in a circular motion with the right oscillator bending forward and the left oscillator bending rearward. The amount of forward/rearward bend varies according to the angular velocity of the vehicle.
5. The detecting piezoelectric parts output voltage (the yaw rate signal) according to the amount of bend. The amount of vehicle direction change is determined by measuring this voltage.

   Fig. 9: Enlarged View Of Sensor Element And Sensor Element Top View

Global Positioning System (GPS)

The global positioning system (GPS) enables the navigation system to determine the current position of the vehicle by using the signals transmitted from the satellites in orbit around the earth. The satellites transmit the satellite identification signal, orbit information, transmission time signal, and other information. When the GPS receiver receives a signal from four or more satellites simultaneously, it calculates the current position of the vehicle based on the distance to each satellite and the satellites position in its respective orbit.

Position detection Image with GPS satellite

Fig. 10: Identifying Position Detection Image With GPS Satellite

Precision of GPS

The precision of the GPS varies according to the number of satellites from which signals are received and the view of the sky. The precision is indicated by the color of the GPS icon shown on the display.

GPS ICON DESCRIPTION CHART

GPS ICON	NUMBER OF SATELLITES	CONDITION	DESCRIPTION
White GPS icon	2 or less	Impossible to detect vehicle position	GPS function is normal. The satellite signals received by the GPS are too few to detect the vehicle position.
Green GPS icon	3	Vehicle position detectable in 2 dimensions	The longitude and latitude of the vehicle position can be detected. (Less precise than detection in three dimensions)
	4 or more	Vehicle position detectable in 3 dimensions	The longitude, latitude and the altitude of the vehicle position can be detected. (More precise than detection in two dimensions)
Not indicated	-	Faulty	The GPS can't be utilized due to a faulty GPS receiver, open in the wire, or other fault or interference.

GPS Antenna

The GPS antenna amplifies and transmits the signals received from the satellites to the GPS receiver.

GPS Receiver

The GPS receiver is built in the navigation unit. It calculates the vehicle position by receiving the signal from the GPS antenna. The vehicle position and signal reception condition is transmitted from the GPS receiver to the navigation unit to adjust vehicle position.

Navigation Unit

The navigation unit calculates the vehicle position and guides you to the destination. The unit performs map matching correction, GPS correction, and distance tuning. It also controls the menu functions and the DVD-ROM drive, and interprets voice commands. With control of all these items, the navigation unit makes the navigation picture signal, then it transmits the signal to the display unit and audio driving instructions to the audio unit.

Calculation of Vehicle Position

The navigation unit calculates the vehicle position (the driving direction and the current position) by receiving the directional change signals from the yaw rate sensor and the travel distance signals from the PCMs vehicle speed pulse (VSP) signal.

Map Matching Tuning

The map matching tuning is accomplished by indicating the vehicle position on the roads on the map. The map data transmitted from the DVD-ROM is checked against the vehicle position data, and the vehicle position is indicated on the nearest road. Map matching tuning does not occur when the vehicle travels on a road not shown on the map, or when the vehicle position is far away from a road on the map.

GPS Tuning

The GPS tuning is accomplished by indicating the vehicle position as the GPS's vehicle position. The navigation unit compares its calculated vehicle position data with the GPS vehicle position data. If there is large difference between the two, the indicated vehicle position is adjusted to the GPS vehicle position.

Distance Tuning

The distance tuning reduces the difference between the travel distance signal from the VSP and the distance data on the map. The navigation unit compares its calculated vehicle position data with the GPS vehicle position data. The navigation unit then decreases the tuning value when the vehicle position is always ahead of the GPS vehicle position, and it increases the tuning value when the vehicle position is always behind the GPS vehicle position.

Route Guidance

The navigation unit can calculate different routes to a selected destination. You have five options:

• Direct Route - Calculate a route that is the most direct.
• Easy Route - Calculate a route that minimizes the number of turns needed.
• Minimize Freeways - Calculate a route that avoids freeway travel. If that is not possible, keep the amount of freeway travel to a minimum.
• Minimize Toll Roads - Calculate a route that avoids, or minimizes travel on toll roads.
• Maximize Freeways - Calculate a route that uses freeways as much as possible.

Audio Guidance

The navigation unit transmits audio driving instructions before entering an intersection or passing a junction. The audio instructions come through the audio unit to the front speakers.

NOTE:

The front speakers are muted whenever the navigation system is giving guidance commands, and all of the speakers when the voice control system is being used.

DVD-ROM

The map data (including all scale rates) is stored in the DVD-ROM. The map data includes:

• Road distances, road widths, speed limits, traffic regulations, passing time at junction, distances to junctions, and the driving instructions for audio guidance.
• Latitude and longitude GPS.

Audio Unit

The audio unit receives the audio driving instructions from the navigation unit and transmits the instructions through the front speakers even when the audio system is in use.

Display Unit

The display unit uses a liquid crystal display (LCD). The LCD is a 8-inch-diagonal, thin film transistor (TFT), stripe type with 336,960 picture elements. The color film and fluorescent light are laid out on the back of the liquid crystal film. The touch sensor on the front of the LCD consists of a touch sensitive resistive membrane with an infinite number of possible touch locations. To maintain compatibility with earlier display units, the sensing locations are confined to a grid of 20 vertical and 9 horizontal touch locations. This produces 180 total sensing points. The display, unit transmits the signal from each operation key and the touch switches to the navigation unit over the GA-Net bus.

Fig. 11: Navigation System Display Unit

Microphone

The microphone receives voice commands and transmits them to the navigation unit for interpretation.

Navigation/Voice control switch

The TALK button activates the voice control system in the navigation unit to accept voice commands. The BACK button returns you to the previous screen.

Glossary

The following is a glossary of terms pertaining to the Voice Recognition Navigation System.

ITEM REFERENCE CHART

Item	Definition
B-CAN	Body CAN Bus (see CAN)
Breadcrumbs	Off road tracking dots that can be followed on the map to retrace your route back to a mapped (digitized) road. This function can be turned on/off in Setup screen 1.
Bus	A data connection between two or more devices that is a transmission path on which signals are dropped off or picked up at every device attached to the line. Only devices addressed by the signals pay attention to them, the others discard the signals.
CAN	Controller Area Network. This communication network allows processors in the vehicle to send/receive information. The fuel pulses used by the trip computer are received from the ECM/PCM using the F-CAN (Fast Controller Area Network) bus.
CPU	Central Processing Unit. The main device within the navigation unit that coordinates the rest of the electronic functions.
Database	This consists of the Map data, and the POI (Points Of Interest) data stored on the DVD.
DBW	Drive By Wire. Allows electrical control of the throttle without the need of a mechanical linkage.
DCA	Detailed Coverage Area. Main metropolitan areas in the Lower 48 states, and Canada are mapped to this level. Seethe Navigation Owner's manual for a list of these areas.
DTC	Diagnostic Trouble Codes. Use the HDS tablet to obtain, and troubleshoot the cause of these codes.
Dead Reckoning	The use of the speed signal, and yaw rate sensor to position the vehicle on the map even when tall buildings, or driving in a tunnel obscures the GPS signal.
Digitized Road	A road that appears on the navigation screen. The road name will appear at the bottom of the navigation screen. If the user drives "off road" the navigation system will display "Not on a digitized road", and if 1/2 mile, then "breadcrumbs" will appear.
Disclaimer Screen	Screen containing cautionary information. It is meant to read carefully and acknowledged by the customer when using the navigation system.
DVD or DVD-ROM	Digital Versatile Disk. The navigation program and database resides on this disk. See the Navigation Owner's Manual for information on how to order a replacement or an update DVD.
ECM	Engine Control Module. Typically referred to as the ECM.
E/T	Elapsed Time for the current trip as displayed by the trip computer screen.
FAQ	Frequency Asked Question. Seethe Navigation Owner's Manual for a list of the customer FAQs, and troubleshooting information.
F-CAN	Fast CAN Bus (see CAN)
FE	Fuel Economy value as displayed on the trip computer screen.
Fuel Pulses	This signal is transmitted on the CAN bus, and is used by the Trip Computer to calculate the fuel economy.
GA-NET (GA) Bus	A data connection between the display panel, the navigation unit, and the audio system. The information passed on this bus are touch screen button commands, and audio and climate control settings directed by the navigation unit.
GPS	Global Positioning System. A network of 24 satellites in orbit around the earth. The navigation system can simultaneously receive signals from up to 12 satellites to accurately positioning the vehicle on the map.
HDS	Honda Diagnostic System. A hand held tablet PC used for diagnosing vehicle problems. This device can be used to obtain DTC codes for diagnosis of navigation system CAN related problems.
H/U	Head Unit. The navigation system display assembly in the dash.
Initialization	This refers to the period needed to re-acquire the GPS satellite orbital information whenever the navigation system power has been disconnected. This can take from 10 to 45 minutes.
LCD	Liquid Crystal Display (the navigation screen)
Map Matching	The received GPS information allows the navigation system to position the vehicle on the map. Map matching has occurred if the map screen is displaying the current street name in the bottom-shaded area.
Mic	Abbreviation for the microphone used for receiving voice commands. It is located near the map light in the ceiling.
MW	Maneuver Window. While on-route to a destination, this window displays information about the next maneuver.
Navi	Abbreviation for the Navigation System.
Off Route	This occurs when the user leaves mapped roads. Off road tracking dots ("breadcrumbs") are displayed if the option is enabled in Setup. The user can use them to return to a mapped road. The bottom of the navigation screen will say "Not on a digitized road"
Outlying Areas	These are rural areas that typically have only their main roads mapped. All other roads are shown in light brown for reference only, since they have not been verified.
PC Card Slot	The PC Card (PCMCIA, type II) slot is for factory use only. Make sure that the sliding door is closed at all items, if opened, an error message is displayed on the screen.
PCM	Powertrain Control Module. This unit supplies the navigation system speed signal, and sends fuel pulses for the trip computer function via the F-CAN network.
PCMCIA	An computer industry defined term referring to the PC Card slot standard.
PIN	Personal Identification Number, a random 4 digit number created by the customer to protect personal information.
POI	Point Of Interest. These are the businesses, schools etc. found under the "places" option on the main menu.
Polygon	Colored areas on the map screen denoting parks, schools etc. See the Navigation Owner's Manual "Traveling to Your Destination" for a list of the assigned colors.
QWERTY	Keyboard layout resembling the typewriter keys. The keyboard layout can be changed to an alphabetical layout in the Setup mode.
SCS service connector	The 2-pin connector used to put the navigation system into the diagnostic mode.
Security Code	Code needed to activate the navigation system. You can obtain the security code from the "iN" (interactive Network) by entering the navigation system control serial number. You can find the serial number on the diagnostic screens (Unit check, Navi ECU), or on the underside of the navigation unit.
Touch Switches or Touch Sensor	The touch sensitive resistive membrane covering the display. The navigation software artificially creates a grid of 20 horizontal and 9 vertical lines for a total of 180 sensing locations. Unlike earlier navigation systems, the screen surface must be touched in order to operate.
Tuning	A continual update of internal navigation system scaling factors. See the individual sensor tuning discussions under either "System Description", or "SYSTEM DIAGNOSTIC MODE" (see <-- page 22-534 -->) in this manual.
Unverified Streets	These streets have not been verified for turn restrictions, one-way, etc. They are shown in light brown on the map. You can enter address destinations in these areas, but voice guidance ends at the last verified street closest to your destination.
Verified Streets	These streets consist of the detailed metropolitan coverage areas, and all other inter-town connection roads. These roads are shown in black on the map.
VP	Vehicle Position. When in map mode, this circular icon shows the vehicle position on the map. Touch this icon to show the latitude, longitude, and elevation of your current position.
VR	Voice Recognition. This allows voice control of many of the navigation functions. The hardware consists of the microphone, voice control switch (TALK/BACK buttons), and the front speakers. See the overview for more information.
VSP	Vehicle Speed Pulse. This pulse signal coming from the ECM/PCM is used to update the Vehicle position on the map, and to calculate the trip computer fuel economy. These pulses do not indicate direction (forward or backward). When in reverse, the navigation receives a signal from the MICU and directs the VP to move backwards on the map.
VSS	Vehicle Speed Sensor. This sensor reads the output shaft speed at the transmission and, provides a speed pulse to the ECM/PCM. The ECM/PCM sends this pulse to the navigation system and speedometer.
Yaw Sensor	This device is located in the navigation unit and senses the side-to-side twisting force generated when the vehicle turns. See a detailed description of how this sensor works in this manual.

System Function Diagram

This diagram shows the features of the navigation system starting at the center and working outward in layers. The navigation program starts at "Key ON", and then displays the globe screen. Once the disclaimer screen is acknowledged, the next shaded portions of the diagram become active. However, some functions of the INFO and SET UP buttons, and all functions of the AUDIO and A/C buttons can be accessed immediately after the globe screen (white).

This items above the map screen show various methods to begin a destination, such as "Go Home". Once you begin driving to your destination, you are provided with map/voice guidance, routing cautions (in unverified areas), and a directions list. While driving to your destination, use the voice control system as much as possible to interact with the navigation, audio, and climate control systems.

Fig. 12: System Function Diagram

Diagnostic Function Diagram

This diagram shows the diagnostic slice of the System Function Diagram. It has the diagnostic features of the navigation system starting at the center and working outward in layers. The diagnostic starts at "Key ON," and then displays the Diagnostic Main Menu (Select Diagnosis items) after:

Starting the vehicle with the SCS service connector plugged in to the navigation service check connector (see FORCED STARTING OF DISPLAY ) to get to the System Links screen, then selecting Return.

Simultaneously pressing and holding the MENU, MAP/GUIDE, and CANCEL buttons.

The diagram shows the available menu choices starting at the buttom left and moving clockwise.

You will find a detailed explanation of each feature.

In most cases, do not clear or change settings in any diagnostic screen unless instructed to do so in the explanation or by the factory. If the factory supplies you with a PCMCIA card to place in the PC card slot, then the features specified in the diagram with "Card" are available.

Fig. 13: Diagnostic Function Diagram

Navigation Unit Inputs and Outputs for Connector A (20P)

Fig. 14: Identifying Navigation Unit Inputs And Outputs For Connector A (20P)

SYMPTOM REFERENCE

Terminal Number	Wire Color	Terminal Name	Description	Voltage (about)	Symptom
1	WHT	R SIG (Red signal)	Red color signal	0-1 V	If open: Red color missing (see "RGB COLOR" diagnostic). If short to ground: Red color missing (see "RGB COLOR" diagnostic).
2	RED	G SIG (Green signal)	Green color signal	0-1 V	If open: Green color missing (see "RGB COLOR" diagnostic). If short to ground: Green color missing (see "RGB COLOR" diagnostic).
3	GRY	SH SIG (Shield signal)	Shield for terminal No. 1, 2, 11, 12, 13	0 V	If open: No change to display. If short to ground: No change to display.
5	RED/BLK	ILL (+) (Illumination positive)	Parking light on signal from dash and console lights	Lights on= battery voltage. Lights off=0 V	If open: When brightness="Auto", night mode for the display is inoperative when lights on. If short to ground: Blows No. 4(10 A) fuse in the under-hood fuse/relay box.
8	WHT	CAN-H (CAN high)	F-CAN bus communication	Pulses 2.5-6 V average 3 V	If open: System Links FI-ECU, and Meter both show "NG". F-CAN diagnostic="NG". B-CAN diagnostic="NG". Car status CHG (CAN)=0. Functional Setup, Trip into, FUP & Sampled FL=0. If short to ground: Same diagnostic conditions as when open, and also sets the following DTCs. B1168 Gauge Control Module loss of Comm. (Engine) B1169 Gauge Control Module loss of Comm. (A/T) B1178 F-CAN communication Circuit error. U0073 (F-CAN bus off) U0155 (F-CAN Gauge control) U0121 (F-CAN TCS control)
9	GRN/BLK	SH DISP BUS (Shield display bus)	Shield for display bus terminal No. 10, 20	0 V	If open: No change to display. If short to ground: No change to display.
10	RED/WHT	DISP BUS (+) (Display bus positive)	Data bus (+) GA-Net	0 V-5 V pulses average 2.5 V depends on bus traffic	If open: Navigation buttons and touch screen do not work. If short to ground: Navigation buttons and touch screen do not work.
11	YEL	B SIG (Blue signal)	Blue color signal	0-1 V AC	If open: Blue color missing (see "RGB COLOR" diagnostic). If short to ground: Blue color missing (see "RGB COLOR" diagnostic).
12	BRN	C SIG (Composite signal)	Composite video (vertical/horizontal) Synchronizing signal	0.3 V AC	If open: Picture rolls horizontally, colors still visible. If short to ground: Picture rolls horizontally, colors still visible.
13	BLU	GND SIG (Ground signal)	Ground for color signal	0 V	If open: No change to display. If short to ground: No change to display.
18	RED	CAN-L (CAN low)	F-CAN bus communication	Pulses 2.5-6 V average 3 V	If open: System Links ECM/PCM, and Gauge Control Module both show "NG". F-CAN diagnostic="NG". B-CAN diagnostic="NG". Car status CHG (CAN)=0. Functional Setup, Trip into, FUP & Sampled FL=0. If short to ground: Same diagnostic conditions as when open, and also sets the following DTCs. B1168 Gauge Control Module loss of Comm. (Engine) B1169 Gauge Control Module loss of Comm. (A/T) B1178 F-CAN communication Circuit error. U0073 (F-CAN bus Off) U0155 (F-CAN Gauge control) U0121 (F-CAN TCS control)
20	RED/BLU	DISP BUS(-) (Display bus negative)	Data bus (-) GA-Net	0 V-5 V pulses nominally 2.5 V	If open: Navigation buttons and touch screen do not work. If short to ground: Hard and touch buttons work OK.

Navigation Unit Inputs and Outputs for Connector B (14P)

Fig. 15: Identifying Navigation Unit Inputs And Outputs For Connector B (14P)

SYMPTOM REFERENCE

Terminal Number	Wire Color	Terminal Name	Description	Voltage (about)	Symptom
5	WHT/GRN	RG L (+) (Route guidance voice left positive)	Left audio signal of voice guidance, and Voice Recognition (VR) prompts	Audio signal 0.004-0.04 V	If open: If voice activated, radio speakers buzz; if voice off, no effect. If short to ground: If voice activated, radio speakers buzz; if voice off, no effect.
6	BLU	MIC SIG (+) (Mic signal positive)	Microphone output signal positive	4-5 V	If open: No microphone signal shown in diagnostic screens: "Navi System Link" and Functional Setup "Mic Level". If short to ground: No microphone signal shown in diagnostic screens: "Navi System Link" and Functional Setup "Mic Level".
10	GRY	ST RG SW (Steering wheel switches)	Steering wheel switch output	4-5 V (TALK button pressed) 2.5-3 V (BACK button pressed)	If open: Steering wheel "TALK", and "BACK" buttons do not work. If short to ground: Steering wheel "TALK", and "BACK" buttons do not work.
11	LT GRN	SH RG (Shield route guidance)	Shield for terminal No. 5, 12	0 V	If open: No effect on voice output. If short to ground: No effect on voice output.
12	GRN	GND RG (Ground route guidance)	Ground for voice guidance, and Voice Recognition (VR) prompts	0 V	If open: No effect on voice output. If short to ground: No effect on voice output.
13	LT BLU	SH MIC (Shield mic)	Shield for terminal No. 6, 14	0 V	If open: No effect on voice control. If short to ground: No effect on voice control.
14	PNK	GND MIC (Ground mic)	Ground for microphone signal	0 V	If open: No microphone signal shown in diagnostics: "Navi System Link" and Functional Setup "Mic Level". If short to around: No effect on voice recognition.

Navigation Unit Inputs and Outputs for Connector C (8P)

Fig. 16: Identifying Navigation Unit Inputs And Outputs For Connector C (8P)

SYMPTOM REFERENCE

Terminal Number	Wire Color	Terminal Name	Description	Voltage (about)	Symptom
1	WHT/RED	+B (+B Power source)	Continuous power source	Battery voltage	If open: Display picture goes out (display back light still on). NOTE: System will reboot to "enter code" screen. If short to ground: Blows fuse No. 7 (10A) in the under-dash fuse/relay box.
2	YEL/RED	ACC (Accessory)	Power source for accessories	Battery voltage at ACC (I)	If open: Display picture goes out (display back light still on). If short to ground: Blows fuse No. 32 (7.5 A) in the under-dash fuse/relay box.
4	BLK	GND (Ground)	Ground for navigation unit	0 V	If open: No effect on system. If short to ground: No effect on system.
5	GRN	BACK LT (Back light)	Reverse signal of select lever from "Multiplex Integrated Control Unit" (A/T) or backup light switch (M/T)	In reverse, battery voltage: Otherwise 0 V	If open: Navigation never sees reverse. Diagnostic screen "Car Status", "Back"=0. If short to ground: Blows fuse No. 21 (7.5 A) in the under-dash fuse/relay box.
6	BLU/WHT	VSP (Vehicle speed pulse)	Vehicle speed pulse signal from PCM	Pulses 0-5 V: Average 2.5 V, when moving	If open: No vehicle speed pulses. Diagnostic screen "Car Status", VSP Navi=0. If short to ground: No vehicle speed pulses. Diagnostic screen "Car Status", VSP Navi=0.
7	GRN/RED	DIAG P (Diagnostic positive)	Service check signal for navigation system	5-6 V	If open: No effect on system. If short to ground: System goes into diagnostic mode.
8	GRN/YEL	DIAG N (Diagnostic negative)	Ground for service check signal	0 V	If open: No effect on system. If short to ground: No effect on system.

Navigation Unit Inputs and Outputs for Connector E (2P)

Fig. 17: Identifying Navigation Unit Inputs And Outputs For Connector E (2P)

SYMPTOM REFERENCE

Terminal Number	Wire Color	Terminal Name	Description	Voltage (about)	Symptom
1	-	GPS	GPS signal	5 V	If open: GPS icon on screen is white, system links screen ANT shows "NG". If short to body ground: Same as open.
2	-	GND GPS	Ground for GPS signal	0 V	If open: GPS icon on screen is white, system links screen ANT shows "NG". If short to body ground: No effect on system.

Audio-HVAC Display Panel Inputs and Outputs for Connector C (10P)

Fig. 18: Identifying Audio-HVAC Display Panel Inputs And Outputs For Connector C (10P)

SYMPTOM REFERENCE

Terminal Number	Wire Color	Terminal Name	Description	Voltage (about)	Symptom
1	BLK		GND SIG	0 V	If open: Audio-HVAC subdisplay visible, but very dim. If short to ground: Audio-HVAC subdisplay unaffected.
2	BLU/ORN	5 V		5 V	If open: All Audio-HVAC subdisplay segments show briefly at key on. If short to ground: All Audio-HVAC subdisplay LCD segments do not work Audio-HVAC subdisplay backlight on.
4	YEL/RED	RESET	Time set sync signal	5 V	If open: Clock Audio-HVAC subdisplay will not set to navigation time (when time offset is applied or when "Reset" touched in Setup "Clock Adjustment" screen). If short to ground: All Audio-HVAC subdisplay LCD segments do not work display backlight on.
5	YEL	CLOCK		0-5 V Data 0.04 V Average	If open: Audio-HVAC subdisplay randomly displays some characters, display backlight on. If short to ground: Audio-HVAC subdisplay randomly displayed characters, display backlight on.
6	BLU/RED	DATA		0-5 V Data 4-6 V Average	If open: All Audio-HVAC subdisplay LCD segments on, backlight on. If short to ground: All Audio-HVAC subdisplay LCD segments on, backlight on.
7	BLU	CE		0-5 V Data 4-6 V Average	If open: All Audio-HVAC subdisplay LCD segments on, backlight on. If short to ground: All Audio-HVAC subdisplay LCD segments on, backlight on.
8	GRY	SH SIG	Shield for terminal No. 4, 5, 6, 7	0 V	If open: No effect on Audio-HVAC subdisplay. If short to ground: No effect on Audio-HVAC subdisplay.
9	RED	LCD BL- (LCD backlight-)	Power for LCD backlight-	0-0.2 V	If open: Audio-HVAC subdisplay function normal, but display is very dim. If short to ground: Audio-HVAC subdisplay functions normally.
10	GRN	LCD BL+ (LCD backlight +)	Power for LCD backlight +	9.5 V	If open: Audio-HVAC subdisplay completely blank. If short to ground: Audio-HVAC subdisplay completely blank.

Display Unit Inputs and Outputs for 20P Connector

Fig. 19: Identifying Display Unit Inputs And Outputs For 20P Connector

SYMPTOM REFERENCE

Terminal Number	Wire Color	Terminal Name	Description	Voltage (about)	Symptom
1	WHT/RED	+B (+B power source)	Continuous power source	Battery voltage	If open: Screen completely off (no backlight visible). If short to ground: Blows fuse No. 7 (10 A) in the under-dash fuse/relay box.
2	YEL/RED	ACC (Accessory)	Power source for accessory	Battery voltage at ACC (I)	If open: Display and buttons do not work. If short to ground: Blows fuse No. 32 (7.5 A) in the under-dash fuse/relay box.
3	BLU/RED	AUD BUS (+) (Audio bus positive)	Data bus (+) GA-Net	0-5 V pulses average 2.5 V depends on bus traffic	If open: Navigation buttons and touch screen do not work. If short to ground: Navigation buttons and touch screen do not work.
4	BLK	SH AUD BUS (Shield audio bus)	Shield for audio bus terminal No. 3, 13	0 V	If open: No change to display. If short to ground: No change to display
5	RED/WHT	DISP BUS(+) (Display bus positive)	Data bus (+) GA-Net	0-5 V pulses average 2.5 V depends on bus traffic	If open: Navigation buttons and touch screen do not work. If short to ground: Navigation buttons and touch screen do not work.
8	WHT	R SIG (Red signal)	Red color signal	0-1 V	If open: Red color missing (see "RGB COLOR" diagnostic). If short to ground: Red color missing (see "RGB COLOR" diagnostic).
9	RED	G SIG (Green signal)	Green color signal	0-1 V	If open: Green color missing (see "RGB COLOR" diagnostic). If short to ground: Green color missing (see "RGB COLOR" diagnostic).
10	BLK	GND (Ground)	Ground for display unit	0 V	If open: No change to display. If short to ground: No change to display.
13	WHT	AUD BUS (-) (Audio bus negative)	Data bus (-) GA-Net	0-5 V pulses average 2.5 V depends on bus traffic	If open: Navigation buttons and touch screen do not work. If short to ground: Hard and touch buttons work OK.
14	GRN/BLK	SH DISP BUS (Shield display bus)	Shield for display bus terminal No. 5, 15	0 V	If open: No change to display. If short to ground: No change to display.
15	RED/BLU	DISP BUS (-) (Display bus negative)	Data bus (-) GA-Net	0-5 V pulses average 2.5 V depends on bus traffic	If open: Navigation buttons and touch screen do not work. If short to ground: Hard and touch buttons work OK.
17	BLU	GND SIG (Ground signal)	Ground for color signal	0 V	If open: No change to display. If short to ground: No change to display.
18	YEL	B SIG (Blue signal)	Blue color signal	0-1 V	If open: Blue color missing (see "RGB COLOR" diagnostic). If short to ground: Blue color missing (see "RGB COLOR" diagnostic).
19	BRN	C SIG (Composite signal)	Composite video (vertical/horizontal) synchronizing signal	0.3 V	If open: Picture rolls horizontally, colors still visible. If short to ground: Picture rolls horizontally, colors still visible.
20	GRY	SH SIG (Shield signal)	Shield for terminal No. 8, 9, 17, 18, 19	0 V	If open: No change to display. If short to ground: No change to display.

Audio-HVAC Subdisplay Inputs and Outputs for 10P Connector

Fig. 20: Identifying Audio-HVAC Subdisplay Inputs And Outputs For 10P Connector

SYMPTOM REFERENCE

Terminal Number	Wire Color	Terminal Name	Description	Voltage (about)	Symptom
1	BLK	GND SIG		0 V	If open: Audio-HVAC subdisplay visible, but very dim. If short to ground: Audio-HVAC subdisplay unaffected.
2	BLU/ORN	5 V		5 V	If open: All Audio-HVAC subdisplay segments show briefly at key on. If short to ground: All Audio-HVAC subdisplay LCD segments do not work Audio-HVAC subdisplay backlight on.
3	BLK	GND	Ground (G503)	0 V
4	YEL/RED	RESET	Time set sync signal	5 V	If open: Clock Audio-HVAC subdisplay will not set to navigation time (when time offset is applied or when "Reset" touched in Setup "Clock Adjustment" screen). If short to ground: All Audio-HVAC subdisplay LCD segments do not work display backlight on.
5	YEL	CLOCK		0-5 V Data 0.04 V Average	If open: Audio-HVAC subdisplay randomly displays some characters, display backlight on. If short to ground: Audio-HVAC subdisplay randomly displayed characters, display backlight on.
6	BLU/RED	DATA		0-5 V Data 4-6 V Average	If open: All Audio-HVAC subdisplay LCD segments on, backlight on. If short to ground: All Audio-HVAC subdisplay LCD segments on, backlight on.
7	BLU	CE		0-5 V Data 4-6 V Average	If open: All Audio-HVAC subdisplay LCD segments on, backlight on. If short to ground: All Audio-HVAC subdisplay LCD segments on. backlight on.
8	GRY	SH SIG	Shield for terminal No. 4, 5, 6, 7	0 V	If open: No effect on Audio-HVAC subdisplay. If short to ground: No effect on Audio-HVAC subdisplay.
9	RED	LCD BL- (LCD backlight-)	Power for LCD backlight-	0-0.2 V	If open: Audio-HVAC subdisplay function normal, but display is very dim. If short to ground: Audio-HVAC subdisplay functions normally.
10	GRN	LCD BL+ (LCD backlight +)	Power for LCD backlight +	9.5 V	If open: Audio-HVAC subdisplay completely blank. If short to ground: Audio-HVAC subdisplay completely blank.

Circuit Diagram

Fig. 21: Navigation System Circuit Diagram (1 Of 2)

Fig. 22: Navigation System Circuit Diagram (2 Of 2)

Display unit connectors

Fig. 23: Identifying Display Unit Connectors B (20P) And Display Unit Connectors A (10P)

Navigation unit connectors

Fig. 24: Navigation Unit Connectors Terminal

Audio-HVAC subdisplay unit 10P connector

Fig. 25: Identifying Audio-HVAC Subdisplay Unit 10P Connector

Symptom Troubleshooting

No picture is displayed

Diagnostic Test: Navi System Link

NOTE:

Always check the connectors for poor connections or loose terminals.

1. Check the No. 7 (10 A) fuse and No. 32 (7.5 A) fuse in the under-dash fuse relay box, and reinstall the fuses if they are OK.

   Are the fuses OK?

   YES -Go to step 2.

   NO -Replace the fuse and recheck.

2. Turn the ignition switch ON (II).
3. Operate the radio and listen to the audio.

   Can you hear the audio?

   YES -Go to step 4.

   NO -Check the ACC circuit.

4. Measure the voltage between body ground and navigation unit connector C (8P) terminals No. 1 and No. 2 individually.

   Fig. 26: Measuring Voltage Between Body Ground And Navigation Unit Connector C (8P) Terminals No. 1 And No. 2

   Is there battery voltage?

   YES -Go to step 5.

   NO -If the +B wire does not have voltage, repair open in the wire between the under-dash fuse relay box and the navigation unit. If the ACC wire does not have voltage, repair open in the wire between the under-dash fuse/relay box and the navigation unit.

5. Turn the ignition switch to LOCK (0).
6. Disconnect the navigation unit connector C (8P).
7. Check for continuity between navigation unit connector C (8P) terminal No. 4 and body ground.

   Fig. 27: Checking Continuity Between Navigation Unit Connector C (8P) Terminal No. 4 And Body Ground

   Is there continuity?

   YES -Go to step 8.

   NO -Repair open in the wire between the navigation unit and body ground (G602).

8. Reconnect the navigation unit connector C (8P).
9. Perform the forced starting of the display (see FORCED STARTING OF DISPLAY ).

   Is the diagnosis menu of the picture diagnosis displayed?

   YES -Go into the diagnostic mode and use the "NAVI SYSTEM LINK" diagnostic (see <-- page 22-535 -->) to check the links.

   NO -Go to step 10.

10. Shield the display unit from the sun with your hand, and check that the display is back lit (only back light is ON.)

    Can you see the back light?

    YES -Replace the navigation unit (see NAVIGATION UNIT REMOVAL/INSTALLATION ).

    NO -Go to step 11.

11. Turn the ignition switch ON (II).
12. Measure the voltage between body ground and display unit 20P connector terminal No. 1 and No. 2 individually.

    Fig. 28: Measuring Voltage Between Body Ground And Display Unit 20P Connector Terminal No. 1 And No. 2

    Is there battery voltage?

    YES -Replace the display unit.

    NO -If the +B wire does not have voltage, repair open in the wire between the under-dash fuse relay box and the display unit. If the ACC wire does not have voltage, repair open in the wire between the under-dash fuse/relay box and the display unit.

Picture is missing a color or tone or is an odd color

Diagnostic Test: Monitor Check

NOTE:

Always check the connectors for poor connections or loose terminals. Before troubleshooting, get the navigation system anti-theft codes. After troubleshooting, enter the navigation system anti-theft codes.

1. Go into the diagnostic mode and use "RGB Color" diagnostic under Monitor Check (see MONITOR CHECK ).

   Are the red, green, and blue colored circles shown?

   YES -The system is OK at this time.

   NO -Go to step 2.

2. Turn the ignition switch to to LOCK (0).
3. Disconnect the navigation unit connector A (20P) and display unit 20P connector.
4. Check for loose terminals at navigation unit connector A (20P) and display unit 20P connector.

   Are there loose terminals?

   YES -Repair the terminal.

   NO -Go to step 5.

5. Check for continuity between the appropriate terminals of navigation unit connector A (20P) and display unit 20P connector based on the missing color(s).

   WIRE COLOR SPECIFICATION
   

   Missing color	Navigation unit connector A (20P)	Display unit 20P connector	Wire color
   Blue	A11	18	YEL
   Green	A2	9	RED
   Red	A1	8	WHT
   Rolling Picture	A12	19	BRN

   Fig. 29: Identifying Navigation Unit Connector A (20P)

   Fig. 30: Identifying Display Unit 20P Connector Terminal

   Is there continuity?

   YES -Go to step 6.

   NO -There is an open in the circuit between the display unit and the navigation unit. Check for poor connections or loose terminals at the display unit and navigation unit. If a poor connection or loose terminal is found, replace the affected shielded harness.

6. Check for continuity between the appropriate terminals of display unit 20P connector based on the missing color(s).

   WIRE COLOR SPECIFICATION
   

   Missing color	Display unit 20P connector terminal	Display unit 20P connector terminals
   Blue	18	10, 20
   Green	9	10, 20
   Red	8	10, 20
   Rolling Picture	19	10, 20

   Fig. 31: Identifying Display Unit 20P Connector Terminal

   Is there continuity?

   YES -There is a short to body ground in the circuit between the display unit and the navigation unit. Replace the affected shielded harness.

   NO -Check for poor connections or loose terminals at the navigation unit and recheck. If a poor connection or loose terminal is found, replace the shielded harness. If no poor connections or loose terminals are found, substitute a known-good navigation unit and recheck. If the problem is gone, replace the navigation unit (see NAVIGATION UNIT REMOVAL/INSTALLATION ). If not, replace the display unit (see WITHOUT NAVIGATION ).

Picture has lines or rolls

Diagnostic Test: Monitor Check

NOTE:

Always check the connectors for poor connections or loose terminals. Before troubleshooting, get the navigation system anti-theft codes. After troubleshooting, enter the navigation system anti-theft codes.

1. Check for electronic aftermarket accessories (possibly hidden) mounted near the display unit or the navigation unit.

   Are there any electronic accessories?

   YES -Disable the accessories, and recheck.

   NO -Go to step 2.

2. Start up the navigation picture.

   Is the picture scrolling horizontally (left to right or right to left)?

   YES -Check for an open or short to ground in the C SIG wire from navigation unit connector A (20P) terminal No. 12 to display unit 20P connector terminal No. 19. Also check for a short to ground between display unit 20P connector terminal No. 19 and terminal No. 20.

   NO -Go to step 3.

3. Go into the diagnostic mode and use "RGB Color" diagnostic under Monitor Check (see MONITOR CHECK ).

   Is the picture missing a red, green or blue color?

   YES -Do troubleshooting for the picture is missing a red, green or blue color or tone (see PICTURE IS MISSING A COLOR OR TONE OR IS AN ODD COLOR ).

   NO -Go to step 4.

4. Turn the ignition switch to LOCK (0).
5. Substitute a known-good display unit (see WITHOUT NAVIGATION ), and recheck.

   Is the picture OK?

   YES -Check for loose connections, then replace the original display unit (see WITHOUT NAVIGATION ).

   NO -Check for loose connections and recheck. If a poor connection or loose terminal is found, replace the shielded harness. If no poor or loose terminals are found, substitute a known-good navigation unit (see NAVIGATION UNIT REMOVAL/INSTALLATION ) and recheck. If the problem is gone, replace the original navigation unit (see NAVIGATION UNIT REMOVAL/INSTALLATION ).

Display unit buttons or touch screen buttons do not work or respond properly

NOTE:

Always check the connectors for poor connections or loose terminals. Before troubleshooting, get the navigation system anti-theft codes. After troubleshooting, enter the navigation system anti-theft codes.

1. Turn the ignition switch ON (II).
2. Try several navigation buttons and touch screen buttons.

   Do all buttons function properly?

   YES -The system is OK at this time.

   NO -

   • If all navigation buttons and touch screen are inoperative, go to step 3.
   • If some navigation buttons operate normally, while others do not, go into the diagnostic mode and use "Touch Panel" diagnostic under Monitor Check (see MONITOR CHECK ) and if necessary, "Display" diagnostic under Unit Check (see UNIT CHECK ).
3. Measure the voltage between body ground and display unit 20P connector terminal No. 1 and No. 2 individually.

   Fig. 32: Measuring Voltage Between Body Ground And Display Unit 20P Connector Terminal No. 1 And No. 2

   Is there battery voltage?

   YES -Go to step 4.

   NO -If the +B wire does not have voltage, repair open in the wire between the under-dash fuse/relay box and the display unit. If the ACC wire does not have voltage, repair open in the wire between the under-dash fuse/relay box and the display unit.

4. Turn the ignition switch to LOCK (0).
5. Disconnect the display unit 20P connector.
6. Disconnect the navigation unit connector A (20P).
7. Check for continuity between display unit 20P connector terminal No. 10 and body ground.

   Fig. 33: Checking Continuity Between Display Unit 20P Connector Terminal No. 10 And Body Ground

   Is there continuity?

   YES -Go to step 8.

   NO -Repair open in the wire between the display unit and body ground (G503).

8. Check for continuity between body ground and display unit 20P connector terminal No. 3, No. 5, No. 13 and No. 15 individually.

   Fig. 34: Checking Continuity Between Body Ground And Display Unit 20P Connector Terminal 3, 5, 13 And 15

   Is there continuity?

   YES -There is a short to body ground in the circuit between the display unit and the navigation unit. Replace the affected shielded harness.

   NO -Go to step 9.

9. Check for continuity between display unit 20P connector terminal No. 4 and terminals No. 3 and No. 13 individually.

   Fig. 35: Checking Continuity Between Display Unit 20P Connector Terminal 4 And Terminals 3 And 13

   Is there continuity?

   YES -There is a short between the display unit and the audio unit. Replace the shielded harness.

   NO -Go to step 10.

10. Check for continuity between display unit 20P connector terminal No. 14 and terminals No. 5 and No. 15 individually.

    Fig. 36: Checking Continuity Between Display Unit 20P Connector Terminal 14 And Terminals 5 And 15

    Is there continuity?

    YES -There is a short between the display unit and the navigation unit. Replace the affected shielded harness.

    NO -Go to step 11.

11. Check for continuity between display unit 20P connector terminal No. 5 and navigation unit connector A (20P) terminal No. 10.

    Fig. 37: Checking Continuity Between Display Unit 20P Connector Terminal 5 And Navigation Unit Connector A (20P) Terminal 10

    Is there continuity?

    YES -Go to step 12.

    NO -There is an open in the circuit between the display unit and the navigation unit. Check for poor connections or loose terminals at the display unit and navigation unit. If a poor connection or loose terminal is found, replace the affected shielded harness.

12. Check for continuity between display unit 20P connector terminal No. 15 and navigation unit connector A (20P) terminal No. 20.

    Fig. 38: Checking Continuity Between Display Unit 20P Connector Terminal 15 And Navigation Unit Connector A (20P) Terminal 20

    Is there continuity?

    YES -Go to step 13.

    NO -There is an open in the circuit between the display unit and the navigation unit. Check for poor connections or loose terminals at the display unit and navigation unit. If a poor connection or loose terminal is found, replace the affected shielded harness.

13. Check for continuity between display unit 20P connector terminal No. 3 and audio unit connector B(14P) terminal No. 9.

    Fig. 39: Checking Continuity Between Display Unit 20P Connector Terminal 3 And Audio Unit Connector B(14P) Terminal 9

    Is there continuity?

    YES -Go to step 14.

    NO -There is an open in the circuit between the display unit and the audio unit. Check for poor connections or loose terminals at the display unit and audio unit. If a poor connection or loose terminal is found, replace the affected shielded harness.

14. Check for continuity between display unit 20P connector terminal No. 13 and audio unit connector B (14P) terminal No. 10.

    Fig. 40: Checking Continuity Between Display Unit 20P Connector Terminal 13 And Audio Unit Connector B (14P) Terminal 10

    Is there continuity?

    YES -Replace the display unit (see WITHOUT NAVIGATION ).

    NO -There is an open in the circuit between the display unit and the audio unit. Check for poor connections or loose terminals at the display unit and audio unit. If a poor connection or loose terminal is found, replace the affected shielded harness.

GPS icon is white or not shown

Diagnostic Test: Navi System Link

NOTE:

Make sure the vehicle is parked outside and away from buildings. Refer to GPS INFORMATION for real time satellite reception display.

Before assuming that a GPS antenna reception complaint is hardware related, be aware of the following:

• The GPS signal is extremely weak (about one billionth the strength of a radio broadcast signal received by a radio antenna)
• If the rear window has been tinted with metallic tint, this can seriously degrade or block GPS reception.
• Loose items on the rear package tray can block satellite antenna reception.
• Aftermarket devices like Lo-Jack, remote starters or other electronic devices located near the navigation unit or GPS antenna can potentially interfere with the operation of the navigation system.

1. Check for metallic window tint on the windshield and electronic aftermarket accessories (possibly hidden) mounted near the GPS antenna or the navigation unit.

   Is there metallic window tint or electronic accessories?

   YES -Remove tint or the accessories and recheck.

   NO -Go to step 2.

2. Go into the diagnostic mode and use the "NAVI SYSTEM LINK" diagnostic (see <-- page 22-535 -->) to check the GPS antenna.

   Is the "GPS Ant" icon red?

   YES -Check for a kinked, crushed, or disconnected GPS antenna wire. If icon is still red, replace the GPS antenna.

   NO -Check that nothing is blocking the GPS antenna located under the package shelf and recheck. Substitute a known-good GPS antenna, and recheck.

   • If the symptom is gone, replace the GPS antenna.
   • If the symptom is still present, substitute a known-good navigation unit and recheck. If the symptom is gone, replace the original navigation unit (see NAVIGATION UNIT REMOVAL/INSTALLATION ).

Voice guidance cannot be heard, is broken up, or there is static

Diagnostic Test: Navi System Link

NOTE:

Always check the connectors for poor connections or loose terminals. Before troubleshooting, write down the audio presets, and get the audio and navigation system anti-theft codes. After troubleshooting, enter the audio and navigation system anti-theft codes, and the audio presets.

1. Press the display unit SET-UP button.
2. Check the volume setting for the navigation system.

   Is it set to OFF?

   YES -Set the volume to an audible level.

   NO -Go to step 3.

3. Check the radio operation.

   Can you hear the radio?

   YES -Go to step 4.

   NO -Troubleshoot the audio system.

4. Go into the diagnostic mode and use the "NAVI SYSTEM LINK" diagnostic (see <-- page 22-535 -->) to check the radio.

   Is the "Radio" icon red?

   YES -Troubleshoot the audio system.

   NO -Go to step 5.

5. Turn the ignition switch to LOCK (0).
6. Disconnect the navigation unit connector B (14P) and the audio unit connector A (20P).
7. Check for continuity between body ground and navigation unit connector B (14P) terminals No. 5, No. 12 individually.

   Fig. 41: Checking Continuity Between Body Ground And Navigation Unit Connector B (14P) Terminals 5, 12

   Is there continuity?

   YES -Repair short to ground in the harness between the navigation and audio units. Replace the affected shielded harness.

   NO -Go to step 8.

8. Check for continuity between navigation unit connector B (14P) terminal No. 11 and terminals No. 5 and No. 12 individually.

   Fig. 42: Checking Continuity Between Navigation Unit Connector B (14P) Terminal 11 And Terminals 5 And 12

   Is there continuity?

   YES -Repair short to ground in the harness between the navigation and audio units. Replace the affected shielded harness.

   NO -Go to step 9.

9. Check for continuity between navigation unit connector B (14P) terminal No. 5 and the audio unit connector A (20P) terminal No. 13.

   Fig. 43: Checking Continuity Between Navigation Unit Connector B (14P) Terminal 5 And Audio Unit Connector A (20P) Terminal 13

   Is there continuity?

   YES -Go to step 10.

   NO -There is an open in the circuit between the navigation unit and audio unit. Check for poor connections or loose terminals at the audio and navigation units. If a poor connection or loose terminal is found, replace the affected shielded harness.

10. Check for continuity between navigation unit connector B (14P) terminal No. 12 and the audio unit connector A (20P) terminal No. 12.

    Fig. 44: Checking Continuity Between Navigation Unit Connector B (14P) Terminal 12 And Audio Unit Connector A (20P) Terminal 12

    Is there continuity?

    YES -Go to step 11.

    NO -There is an open in the circuit between the navigation unit and audio unit. Check for poor connections or loose terminals at the audio and navigation units. If a poor connection or loose terminal is found, replace the affected shielded harness.

11. Substitute a known-good navigation unit, and recheck.

    Is the system OK?

    YES -Replace the original navigation unit (see NAVIGATION UNIT REMOVAL/INSTALLATION ).

    NO -Replace the audio unit (see WITHOUT NAVIGATION ).

Voice control does not work/respond

NOTE:

Always check the connectors for poor connections or loose terminals. Before troubleshooting, write down the audio presets, and get the audio and navigation system anti-theft codes. After troubleshooting, enter the audio and navigation system anti-theft codes, and the audio presets.

Before assuming that a voice complaint is hardware related, ensure that the voice control system is being operated correctly.

• Make sure you are on the correct screen when trying to issue a voice command. For example, the command "Find the nearest Italian Restaurant" only works on a Map screen.

  (See the Navigation System Manual for a complete list of allowed voice commands for the information being displayed.)

• Close the windows and sunroof.
• Set the fan speed to low (1 or 2).
• Adjust the air flow from the air conditioning vents so that they do not blow against the microphone on the ceiling.
• Pause after pressing the TALK button, then give a voice command clearly in a natural speaking voice. If the system cannot recognize your command, speak louder.
• If the microphone picks up voices other than yours, the system may not interpret your voice commands correctly.
• If you speak a command with something in your mouth, or your voice is too husky, the system may misunderstand your command.

1. Go into the Diagnostic Menu and use the "Mic Level" test the under Functional Setup (see FUNCTIONAL SETUP ) to check the operation of the TALK and BACK buttons.

   Are the TALK and BACK buttons operational?

   YES -Go to step 2.

   NO -Check for an open or short to ground on navigation unit connector B (14P) terminal No. 10.

2. Use the "Mic Level" diagnostic under Functional Setup (see FUNCTIONAL SETUP ) to check the operation of the microphone.

   Is the microphone operational?

   YES -Check the operation of the voice control system (seethe Navigation System Manual).

   NO -Check for a loose front map light (microphone) assembly. If OK, check for an open or short to ground on navigation unit connector B (14P) terminals No. 6 and No. 14.

Vehicle position icon constantly leaves road, moves erratically, or is very far from actual position

1. Check the GPS icon on the navigation picture.

   Is the GPS icon white?

   YES -Do the troubleshooting for GPS icon is white or not shown (see GPS ICON IS WHITE OR NOT SHOWN ).

   NO -Go to step 2.

2. Go into the Diagnostic Menu and use the "Yaw Rate" test (see YAW RATE ) to check the yaw rate sensor.
3. Go into the Diagnostic Menu and use the "Car Status" test (see CAR STATUS ) to check the vehicle speed pulse.

   Are the yaw rate sensor and vehicle speed pulse OK?

   YES -The problem may be normal. Check to see if the problem occurs in the same place. If it does, the problem could be in the database. Go to step 4.

   NO -If the problem is the yaw rate sensor, replace the navigation unit (see NAVIGATION UNIT REMOVAL/INSTALLATION ). If the problem is the vehicle speed pulse, troubleshoot the vehicle speed signal circuit.

4. Substitute a known-good navigation unit and check to see if the problem occurs in the same place.

   Does the problem occur in the same place?

   YES -The problem is in the database. Report the problem according to the Navigation System Manual under "Reporting Errors".

   NO -Replace the navigation unit (see NAVIGATION UNIT REMOVAL/INSTALLATION ).

DVD screen error messages

Diagnostic Test: Car Status

NOTE:

Check the Navigation System Owner's Manual for a list of common DVD screen error messages and the probable causes. Go into the diagnostic mode and use the "Car Status" diagnostic (see CAR STATUS ) to check the status of the DVD lid. The following troubleshooting is for the error messages shown on the error message table (see ERROR MESSAGE TABLE ).

1. Check the DVD-ROM reading surface for scratches.

   Are there any scratches on the DVD-ROM reading surface?

   YES -Replace the DVD-ROM (see DVD-ROM REPLACEMENT ).

   NO -If the problem occurs occasionally when the system is cold, this is normal. If the problem occurs frequently when driving, replace the navigation unit (see NAVIGATION UNIT REMOVAL/INSTALLATION ).

Trip computer-no distance

Diagnostic Test: Car Status

NOTE:

Always check the connectors for poor connections or loose terminals. Before troubleshooting, get the navigation system anti-theft codes. After troubleshooting, enter the navigation system anti-theft codes. If the Previous button on the Trip Computer screen is not active, make sure to answer OK to the Disclaimer screen.

1. Go into the diagnostic mode and use "Car Status" diagnostic (see CAR STATUS ) to check for a vehicle speed pulse (VSP).

   Is there a VSP signal when the vehicle is moving?

   YES -Check the CAN bus wires for an open or short to ground between navigation unit connector A (20P) terminals No. 8 and No. 18 and ECM/PCM connector E (31P) terminals No. 11 and No. 24. If OK, replace the navigation unit.

   NO -Check the VSP wire for an open or short to ground between navigation unit connector C (8P) terminal No. 6 and ECM/PCM connector E (31P) terminal No. 26.

Trip computer-no fuel information

Diagnostic Test: Navi System Link

NOTE:

Always check the connectors for poor connections or loose terminals. Before troubleshooting, get the navigation system anti-theft codes. After troubleshooting, enter the navigation system anti-theft codes. If the Previous button on the Trip Computer screen is not active, make sure to answer OK to the Disclaimer screen.

Perform the "Navi System Link" check (see NAVI SYSTEM LINK ) to check the communication line between the ECM/PCM and the navigation unit.

1. Start the engine.
2. Go into the diagnostic mode and use "Trip Information" diagnostic under Functional Setup (see FUNCTIONAL SETUP ).

   Are the values greater than zero?

   YES -The system is OK.

   NO -Check for B or F-CAN DTCs, then troubleshoot them.

Navigation cannot control HVAC by voice command

Diagnostic Test: Navi System Link

NOTE:

Always check the connectors for poor connections or loose terminals. Before troubleshooting, get the navigation system anti-theft codes. After troubleshooting, enter the navigation system anti-theft codes.

1. Go into the diagnostic mode and perform the "Navi System Link" check (see NAVI SYSTEM LINK ).

   Is the "Air-con" icon red?

   YES -Do the climate control system troubleshooting.

   NO -Check for loose connection at the climate control unit and display unit. If OK, replace the display unit (see WITHOUT NAVIGATION ).

Display day/night mode does not work

Diagnostic Test: Car Status

NOTE:

Always check the connectors for poor connections or loose terminals. Before troubleshooting, get the navigation system anti-theft codes. After troubleshooting, enter the navigation system anti-theft codes. Full brightness on the instrument panel brightness control causes the system to stay in the day mode, even when the lights are on.

1. Make sure the instrument panel brightness control is not on full brightness. Turn the headlights on, and adjust the dash brightness to the middle range.
2. Change the day/night mode to AUTO under "Set-up" and recheck.

   Does the display change to day and night modes when turning the headlights on and off?

   YES -The system is OK at this time.

   NO -Go to step 3.

3. Go into the diagnostic mode and use "Car Status" to check the ILL signal (see CAR STATUS ) by turning the head lights ON, then OFF.

   Is the "ILL" signal OK?

   YES -The system is OK.

   NO -Check the ILL+ circuit between the navigation unit and relay module.

System locks up or freezes constantly

Diagnostic Test: Unit Check

Check the DVD for scratches or damage and the navigation unit for water damage. If OK, perform all of the "Unit Check" checks under System Diagnosis Test (see UNIT CHECK ).

Vehicle icon wanders across the map when driving (does not follow a displayed road) or map or vehicle ICON spins

Diagnostic Test: Yaw Rate

NOTE:

Perform this diagnostic when the vehicle is cold.

1. Go into the diagnostic mode and use the "Yaw Rate" diagnostic (see YAW RATE ).

   Are the values correct?

   YES -The system is OK.

   NO -Replace the navigation unit (see NAVIGATION UNIT REMOVAL/INSTALLATION ).

Vehicle icon moves by itself or spins when parked

Diagnostic Test: Functional Setup

NOTE:

Always check the connectors for poor connections or loose terminals. Before troubleshooting, get the navigation system anti-theft code. After troubleshooting, re-enter the anti-theft code, and re-initialize the navigation system.

1. Start the engine.
2. From the main menu, select places, then select any destination, and begin the trip.
3. With the vehicle parked, watch the vehicle icon on the display.

   Does the vehicle position icon move by itself?

   YES -Go to step 4.

   NO -The system is OK at this time.

4. Go into the Diagnostic mode, select "Functional Setup", then select "Demonstration".

   Is "Demonstration Mode" set to "YES"?

   YES -Set the Demonstration mode to "NO".

   NO -Replace the navigation unit (see NAVIGATION UNIT REMOVAL/INSTALLATION ).

Navigation stays on with ignition switch OFF

NOTE:

Always check the connectors for poor connections or loose terminals. Before troubleshooting, get the navigation system anti-theft code. After troubleshooting, re-enter the anti-theft code, and re-initialize the navigation system.

1. Remove the key from the ignition.

   Does the navigation screen stay on?

   YES -Go to step 2.

   NO -The system is OK at this time.

2. The vehicle may have been used as a demonstration vehicle at an event like an auto show. In these events, power is often jumpered to the navigation system so that the ignition key is not needed in the vehicle. At the end of the show, the jumper wire may not have been removed. Check the navigation unit "C" connector (8P) for a "non-factory" jumper wire in series with the factory cable.

   Is there a jumper wire?

   YES -Remove the jumper wire, and re-test.

   NO -Go to step 3.

3. The display or audio unit may have been jumpered behind the dash to allow the navigation system to run without the ignition key.

   Does the radio function with the ignition switch off?

   YES -Go to step 4.

   NO -Go to step 5.

4. Remove the display unit and check to see if the audio 20P connector has a non-factory jumper wire in series with the factory connector.

   Is there a jumper wire?

   YES -Remove the jumper wire, and re-test.

   NO -Go to step 5.

5. Check the interior lights with the ignition switch off.

   Can you turn on the interior lights with the ignition switch off?

   YES -Troubleshooting the ACC circuit.

   NO -Replace the navigation unit (see NAVIGATION UNIT REMOVAL/INSTALLATION ).

Navigation cannot control audio system

1. Make sure the anti-theft code for the audio system is entered.
2. Go into the diagnostic menu and use the "Navi System Link" test (see NAVI SYSTEM LINK ).

   Is the "Radio" icon red?

   YES -Do the troubleshooting for the voice guidance cannot be heard (see VOICE GUIDANCE CANNOT BE HEARD, IS BROKEN UP, OR THERE IS STATIC ).

   NO -Go to step 3.

3. Substitute a known-good navigation unit (see NAVIGATION UNIT REMOVAL/INSTALLATION ), and recheck.

   Can the navigation control audio/CD?

   YES -Replace the original navigation unit (see NAVIGATION UNIT REMOVAL/INSTALLATION ).

   NO -Do the audio system troubleshooting.

Navigation cannot control XM radio

1. Go into the diagnostic menu and use the "Navi System Link" test (see NAVI SYSTEM LINK ).

   Is the "XM" icon red?

   YES -Check the connector at the XM receiver.

   NO -Go to step 2.

2. Substitute a known-good navigation unit (see NAVIGATION UNIT REMOVAL/INSTALLATION ), and recheck.

   Can the navigation control the XM radio?

   YES -Replace the original navigation unit (see NAVIGATION UNIT REMOVAL/INSTALLATION ).

   NO -Do the audio system troubleshooting.

Audio-HVAC subdisplay unit does not work properly

1. Check the clock in the setup menu. Reset if necessary and recheck.

   Does the clock reset?

   YES -The system is OK at this time.

   NO -Go to step 2.

2. Check for an open or short to body ground between audio-HVAC subdisplay unit 10P connector terminal No. 4, No. 5, No. 6, No. 7 and display unit connector A (10P) terminal No. 4, No. 5, No. 6, No. 7.

   Are the circuits OK?

   YES -Replace the display unit (see AUDIO-HVAC DISPLAY PANEL REMOVAL/INSTALLATION ).

   NO -Repair the circuits.

Navigation frequently asks for anti-theft code and needs GPS initialization

1. Check for an open on navigation unit connector C (8P) terminals No. 1 and No. 2.

   Are the circuits OK?

   YES -Replace the navigation unit.

   NO -Repair the circuits.

System Diagnostic Mode

Start-up procedure and Diagnosis Menu

1. Connect the SCS service connector (see FORCED STARTING OF DISPLAY ) to the navigation service connector located in the trunk. Turn the ignition switch to the ON (II) position. The display will go directly to the diagnostic menu screen.

   NOTE:

   When finished troubleshooting, make sure to remove the SCS service connector.

2. There are two ways to enter the diagnostic mode:
   1. If the battery has not been disconnected, turn the ignition switch ON (II). Then use the navigation display hard buttons, press and hold the 3 buttons (Menu, Map/Guide, and Cancel), and keep them pressed for about 5 seconds. The display screen will go directly to the "Select Diagnosis Items".
   2. If the battery was disconnected and reconnected prior to this test, hold down the Menu and Zoom Out buttons at the "Code" or "GPS Acquire" screen. The display will go to the "NAVI SYSTEM LINK" screen. Push the joystick to go to the "Functional Setup menu," then touch the Return icon to get to the "Select Diagnosis Items" menu.

      NOTE:

      This only allows access to the diagnostic screens. All other navigation functions are disabled.

      Fig. 45: Identifying Diagnostic Menu Screen

3. After the display changes to the Select Diagnosis Items menu, select the item you want to check and the diagnostic will start. To return to the previous screen, select "RETURN".
   • Navi System (Link)
   • F-CAN (System link)
   • B-CAN (System link)
   • Monitor Check
   • Unit Check
   • Car Status
   • GPS Information
   • Yaw Rate
   • Tire Calibrate
   • Functional Setup
   • Version

Navi System Link

• This diagnostic tests the cables connecting the navigation components. Ensure that the ignition switch is in the ON (II) position. When the diagnostic begins, you hear a "bong" sound. The system is in a "Detecting" mode, and is waiting for all items in white to be tested. This includes the navigation voice control (TALK/BACK) buttons, and microphone. Press the navigation TALK button on the steering wheel, and in a normal voice, say "testing". The talk indicator on the screen should turn green, and the voice level indicator should move to at least the 6th bar to pass. Next, press the navigation BACK button. The "Cancel" indicator should turn green.
• If all of the communication lines connecting the system components, and the navigation TALK/BACK buttons/microphone check out OK (all block diagram items are green), then the "OK" indicator turns green.
• If there is a problem with the system, the faulty system component item turns red, and the screen will show "NG" in red. Use the troubleshooting, and other diagnostic screens to help locate the problem.
• The indication on the screen will not change until you cycle the ignition switch. After repairing the affected cable or system, repeat this diagnostic.

  NOTE:

  Green boxes and green "OK" indicate that the communications lines (cables) are intact. This diagnostic does not necessarily imply that the individual components are functioning properly. For instance, the GPS antenna wire may be crushed, but still show as "green". A road test, or other diagnostic may be necessary to find the problem.

• This navigation system is designed for use in the US or Canada market.
  • US Market: English is the only language choice.
  • Canada Market: On the disclaimer screen, English or French can be selected.
  • Touch the "Chg Canada" or "Chg US" button to select the desired choice.
• Select "Return" to return to the Diagnosis Menu.

  Fig. 46: Navigation Screen Display - Navi System Link

  NOTE:

  The mic level indicator must reach the 6th bar or greater to pass the test. For '05 Model; If the XM link is red or flashing red, go to audio system symptom troubleshooting.

F-CAN System Link

F-CAN (Fast Controller Area Network) passes information between processors on the network. For example, the F-CAN network is used to pass fuel pulses between the ECM/PCM and the navigation unit for the trip computer function. The F-CAN network uses a communication protocol that transmits data at 500 kbps.

• If the diagnostic screen below reads NG with the ignition switch ON (II), then diagnostic trouble codes (DTCs) for the F-CAN can be retrieved with the HDS (Honda Diagnostic System). The data displayed in the ID boxes is irrelevant.
• For more details on troubleshooting the F-CAN, refer to the multiplex system.

  Fig. 47: Navigation Screen Display - F-Can System Link

B-CAN System Link

B-CAN (Body Controller Area Network) communication moves at a slower speed for convenience related items, and for other functions.

• If the diagnostic screen below reads NG with the ignition switch ON (II), then diagnostic trouble codes (DTCs) for the B-CAN can be retrieved with the HDS (Honda Diagnostic System). The data displayed in the ID boxes is irrelevant.
• For more details on troubleshooting the B-CAN, refer to the multiplex system.

  Fig. 48: Navigation Screen Display - Gray Tone

Monitor Check

Overview of display unit

• The display unit communicates with the navigation unit over its own GA-Net bus. Information is sent to the navigation unit whenever the user activates the touch screen, or hard buttons. Information sent by the navigation unit to the display unit includes commands to control the LCD back light.
• The security system protects the navigation display by daisy-chaining the security signal through it, and then passing the signal to the audio unit.
• The illumination input from the gauge brightness control provides back lighting for the hard buttons surrounding the screen.
• The display unit also communicates with the climate control module to set the A/C mode, and fan speed, and to receive the outside temperature that is displayed on the A/C-INFO screen.

These screens allow you to troubleshoot the display unit. Touch the menu item you want to troubleshoot, and follow the diagnostic instructions.

Fig. 49: Navigation Screen Display - White Raster

RGB Color

This screen verifies that the display unit is receiving the video (R, G, B and Composite sync) signals properly. The three primary colors should all be shown without distortion. The combination of all three should produce a central white section. If any of the colors are missing, troubleshoot for the color signal (see PICTURE IS MISSING A COLOR OR TONE OR IS AN ODD COLOR ). If the picture has lines in it, or scrolls horizontally or vertically, troubleshoot for a Composite sync problem (see PICTURE HAS LINES OR ROLLS ).

Fig. 50: Navigation Screen Display - RGB Color

Gray Tone

This screen diagnoses problems with contrast. You should be able to see the changes from bar to bar across the scale. It is normal for the 2 bars on either side to appear the same.

Fig. 51: Navigation Screen Display - Gray Tone

White Raster

The entire display must be in white.

Fig. 52: Navigation Screen Display - White Raster

Black Raster

The entire display must be black.

Fig. 53: Navigation Screen Display - Black Raster

Test Pattern

The chart below; shows the colors being used for the map and menu screens. This is for factory use only. To check the color signal use the "RGB Color" diagnostic.

Fig. 54: Navigation Screen Display - Test Pattern

Monitor Adjustment

This allows you to center the navigation display. Use the joystick to move the picture up/down or left/right It is unlikely that you will ever need to adjust the monitor position. The "Default" button will reset the display position to factory specifications.

Fig. 55: Navigation Screen Display - Monitor Adjustment

Touch Panel Check

The panel touch sensing system consists of a touch sensitive resistive membrane covering the display. Contrary to other systems using infrared beams, the screen has to be physically touched to make it work. The display has the capability of an almost infinite number of touch locations. However, to be compatible with earlier systems, the software only senses the locations shown on the diagnostic screen below. Every possible touch button position is shown on this diagnostic screen. Touching one of these areas should cause its color to reverse, and sound a "beep". If the touch locations are off slightly (by less than one touch locations), use the "Touch Panel Calibration" diagnostic to re-align the touch "zones" with the screen image. If any areas of the screen either don't respond, or respond at some other location when touched, then replace the display unit.

NOTE:

Unlike earlier screens that used infrared sensors, direct sunlight will not affect this test.

Fig. 56: Navigation Screen Display - Return

Touch Panel Calibration

The display screen uses a touch sensitive membrane instead of fixed infrared "beams". This means that every location of the entire surface of the display is touch sensitive.

For the display to be compatible with earlier navi systems, the system software creates "touch zones" emulating the touch "switches" created by the intersections of 20 vertical and 9 horizontal infrared beams. This diagnostic allows alignment of these artificially created "zones" with the location of the button images on the screen.

Normally this should never need adjustment, and it used only to adjust the touch locations for parallax (the touch locations appear different when viewed at an angle). However if an adjustment is necessary, follow this procedure:

• The screen consists of four test areas consisting of a "+" button and an adjacent box with a black border. Touch the four "+" buttons to verify alignment. If when you touch a "+" button, the adjacent box becomes yellow, then do the following. Continue to hold the "+" button, and simultaneously move the joystick to shift the screen slightly from side to side, or up and down. The adjustment is complete when you can touch all four "+" boxes and none of the adjacent boxes becomes yellow.
• To store any changes you make, push in the joystick.
• To reset the touch zones to the factory default touch the MAP/GUIDE button.
• Press Return to exit the diagnostic.

  Fig. 57: Navigation Screen Display - Push Map

Unit Check

To start the test, select the item you want to check.

Fig. 58: Navigation Screen Display - Select Cheek Units

Display

This diagnostic performs additional checks on the communication bus between the control unit, and the display. In addition, the internal display electronic components are checked.

• When the Connection is NG, first check for loose terminals at the navigation unit and the display unit connections. Next check for an open or short in the communication line between the navigation unit and the display unit. If you find the line to have an open or short, replace the affected shielded harness.
• If the ROM or RAM is NG, replace the display unit.
• The version represents the software version in the display, and is for factory use only.

  Fig. 59: Navigation Screen Display - ROM And RAM

Radio

If the NG is indicated, check for loose audio unit connectors.

Fig. 60: Navigation Screen Display - Radio

Navi ECU

This screen diagnosis the navigation unit. When you initiate this diagnostic, the navigation unit may delay up to a minute while the diagnosis runs.

• "ROM (Application)", and "ROM (Loader)" are for factory use.
• If "V-RAM" or "D-RAM" is NG, then replace the navigation unit.
• If "GPS" indicates "NG (ANT)", then check the entire GPS Antenna wire from the navigation unit to the antenna. If the wire is crushed or damaged, try a known-good antenna. If this diagnostic reads OK, then order a new GPS antenna. If the diagnostic still reads NG (ANT), then replace the navigation unit.
• "DVD-ROM" represents the database version on the DVD. You can also find this information in Setup Screen 4 by touching "information".
• "Serial No." should be the same as the serial number found on the underside of the navigation unit. You need this number to obtain the security code from the Interactive Network (iN) system.
• The "Mem Clr" button is for factory use and should not be used unless instructed by the factory. Touching this button will erase the client's settings, personal information, GPS orbital data, and anything else stored in memory.

  Fig. 61: Navigation Screen Display - ROM (Application)

PC Card info

Normally there is no PC Card in the PC slot, and the screen should say, "PC Card is not inserted".

Fig. 62: Navigation Screen Display - PC Card Info

If the factory instructs you to insert a card, then this screen displays the Manufacturer, and Product Name as shown in the following screen.

Fig. 63: Navigation Screen Display - PC Card Info

Car Status

Use this screen to confirm that the navigation unit is properly receiving input signals. Signals equal to (0) are OFF, and signals equal to (1) are ON. If the value on the display does not match the actual vehicle status, then check the wire carrying the signal.

• CHG-(OBSELETE-NOT USED) Charge indicator (Pin 3 of C-connector)
  1. OFF (0) when engine is off, or alternator is not charging
  2. ON (1) when engine is running

This signal was used by the previous DVD navigation system. If CHG was off, then the screen was shut off after 10 minutes of inactivity to minimize battery consumption.

• VSP-Vehicle Speed Pulse from ECM/PCM (Pin 6 of C-connector)
  1. OFF (0) when vehicle is not moving
  2. ON (1) when vehicle is moving

The VSP comes from the ECM/PCM as a dedicated signal. Internally, the navigation unit compares the actual VP on the map against street data to adjust the pulse to speed scaling factor. As this scaling factor becomes more accurate, the "Level" gradually increases from 0 to 10.

• BACK-Reverse indication from tail light relay (Pin 5 of C-connector)
  1. OFF (0) when shift lever is in any position other than reverse
  2. ON (1) when shift lever is in reverse

The Back signal is used by the navigation unit to allow the map screen to show the VP moving backwards when in reverse. This signal is needed because the Speed Pulse has no direction indication.

• CHG (CAN)-Charge indicator from ECM/PCM using F-CAN bus (Pin 8,18 of navigation unit A-connector)
  1. OFF (0) when engine is off
  2. ON (1) when engine is running

This signal is obtained off of the F-CAN bus. For problems, see the service manual section for troubleshooting F-CAN. Diagnostic trouble codes (DTCs) for the F-CAN can be retrieved with a HDS (Honda Diagnostic System).

• ILL-Illumination Indication

  (Pin 5 of navigation unit A-connector)

  1. OFF (0) when parking lights, or headlights are off
  2. ON (1) when parking lights, or headlights are off

This signal is used by the navigation unit to determine whether to put the navigation screen into the Day or Night brightness mode. (Setup screen 1)

• DVD Lid-senses if DVD door is open
  1. (Close) when door is closed
  2. (Open) when door is open

The navigation unit has a micro switch to detect this. If open is indicated when the door is closed, replace the navigation unit.

• PC Card Lid-Senses if PC Card door is open
  1. (Close) when door is closed
  2. (Open) when door is open

The navigation unit has a micro switch to detect this. If open is indicated when the door is slid shut, then replace the navigation unit. This slot is for insertion of PC Flash memory cards for gathering diagnostic information. This is for factory use only.

Fig. 64: Navigation Screen Display - Car Status

GPS Information

This screen shows the current status of GPS reception. The circular diagram shows the current location of the GPS satellites (yellow numbers) as they would appear in the sky. The outer circle represents the horizon (0 degrees elevation). The middle and inner circles represents 30 and 60 degrees respectively. The very center of the diagram (90 degrees elevation) is directly overhead. Nearby obstructions, like tall buildings, will block satellites in that direction. That is why it is necessary to troubleshoot GPS reception issues in an open area. The satellite numbers shown on the diagram correspond to the "PRN" number in the "GPS Details" screen. There are always 24 "active" GPS satellites in orbit. Because satellites fail, and have to be removed from service, spares always parked in orbit, ready to be activated. This is why the PRN (satellite ID number) can be greater than 24.

NOTE:

To use this screen for troubleshooting, the vehicle should be outside away from buildings, tall trees, and high-tension wires for at least 10 minutes with the engine running. Metallic window tinting on the rear window or after-market electronic accessories mounted near the navigation or display units can interfere with GPS acquisition. The "Number of Satellites" box shows the number of acquired satellites (maximum of 12). It should contain 4 or more icons. If not troubleshoot for "GPS icon is white or not shown" (see GPS ICON IS WHITE OR NOT SHOWN ). The "Current Position" shows latitude, longitude, and elevation (in meters). If there are less than 4 satellites, the elevation can be grossly inaccurate. The Date/Time field shows the current date, and also a time that includes daylight savings and other offsets entered by the client in Setup screen 2 "Adjust Time Zone/Clock". Fig. 65: Navigation Screen Display - GPS Information

GPS Detail

By pressing and holding the MENU button for 10 seconds, a GPS Detail screen appears. This screen displays real time incoming satellite positional data. Most of the information shown on this screen is for factory use, however some of the data can indicate partial GPS signal interference.

Fig. 66: Navigation Screen Display - GPS Detail

• The box TS/AS and HDop/VDop is for factory use.
• The Speed and Direction information is updated in real time when driving, and can be used to detect intermittent speed sensor problems.
• The Date/Time Information is the same as in Setup screen 2 "Adjust Time Zone/Clock".
• If the "3D" icon is shown above the yellow dots, this implies that at least 4 satellites are available for map positioning, and the "GPS" indicator on the map screen will be green. See the Global Positioning System detailed explanation in the "System Description" (see GLOBAL POSITIONING SYSTEM (GPS) ).
• If the row of data in the table below begins with a "yellow dot", the AZI and EL fields can be used to locate each satellite on the circular GPS diagram (see prior screen).

NOTE:

The data shown in the GPS Detail screen is an example only.

The table of values shown on the screen below has the following columns:

PROBLEM SYMPTOM REFERENCE

Column	Description	Problem indication
Active	Active satellites (Yellow Dot)	If "3D" is missing, follow GPS icon is white or not shown troubleshooting (see GPS ICON IS WHITE OR NOT SHOWN ).
PRN	The satellite ID number
ST	The status: 0 = cannot view or searching, 2 = acquiring	If all 0, then, follow GPS icon is white or not shown troubleshooting (see GPS ICON IS WHITE OR NOT SHOWN ).
AZI	Azimuth, the angle (0-360) clockwise from north
EL	Elevation from the horizon (90 deg is overhead)
C/N	N/A	Normal signal is 49-52, no signal: 27-33
ACC	N/A

Yaw Rate

This diagnostic checks the yaw rate sensor in the control unit. This device detects when the vehicle turns, and repositions the vehicle position icon on the map screen. For more detailed information, seethe yaw rate sensor theory of operation under "System Description" (see YAW RATE-LATERAL ACCELERATION SENSOR ).

• "Sensor" indicates the voltage output from the yaw rate sensor. It should indicate about 2.500 volts when stopped.
• "Offset" is the reference voltage or standard within the yaw rate sensor. It also should indicate about 2.500 volts when stopped.
• A "sensor" output voltage LOWER than the "Offset" voltage indicates that the vehicle is turning to the right.

  A "sensor" output voltage HIGHER than the "Offset" voltage indicates that the vehicle is turning to the left.

• The yaw rate offset, and sensor should both indicate about 2.500 volts when stopped. If either reads zero, or 5.000 volts replace the navigation unit.
• The yaw rate offset and sensor should be within +/- 0.01 V of each other when stopped. The sensor value should change relative to the offset as the car is turned while driving. If not, replace the navigation unit.

Example: Car stopped

CAR STOPPED SPECIFICATION

Normal		Abnormal
Offset	2.526 V	Offset	2.526 V
Sensor	2.516-2.536 V	Sensor	2.623 V

Example: Car turning

CAR TURNING SPECIFICATION

Normal		Abnormal
Offset	2.526 V	Offset	2.526 V
Sensor	2.678 V (left turn) 2.478 V (right turn)	Sensor	2.623 V (no change on turns)

• Auto tuning should always be on. If it is off, turn it on.
• "Sensitivity study" represents the status of the internal tuning function. At initialization, this value starts at 6 and increases to # 10 as the internal correction values become more accurate.
• The settings "CCW Cal Factor", "CW Cal Factor", and "Set" are for factory use only. THIS SHOULD NEVER BE USED.

  Fig. 67: Navigation Screen Display - Yaw Rate

Tire Calibrate

As the vehicle moves, the navigation system receives speed pulses from the PCM. These pulses are converted using a conversion factor to a mph speed that moves the vehicle position (VP) on the map. The navigation system has an internal tuning function that generates and refines this factor based on actual driving. The "Level" indicates the status of the turing. At navigation initialization, it begins at 0, and increases to 10 as the navigation system is used.

• The "Auto Tuning" is factory set to "ON", and should remain on.
• The "LEVEL" indicates the tuning status. If it is less than 10, the unit is still calibrating.
• The "Tire-Cal. Tuning" and the "Set" button should not be used. It is for factory use only.

  Fig. 68: Navigation Screen Display - Tire-Calibrate

Functional Setup

Touch the item you want to check.

Fig. 69: Navigation Screen Display - Functional Setup

Trip Information

This screen shows current internal values used for trip computer calculations. They are for factory use only.

• The simulation "Start" button is for factory use.
• The "Data Save" button should always be on. It is for factory use only.

  Fig. 70: Navigation Screen Display - Trip Information

Trip Calibrate

By holding down the MENU button while on the "Trip Information" screen, you will see the this screen. This screen allows you to adjust the vehicle range (distance to empty).

• "Calc. RANGE" is the calculated value.
• "Disp. RANGE" is the distance displayed on the trip computer "Range" field. If it reads "0", the vehicle will have enough fuel to travel about 20 miles.
• Range Tuning can be adjusted "+" or "-" to adjust the range to empty. It is recommended that this value not be changed.

NOTE:

Setting the range offset too low (+10) could result in the vehicle running out of gas before the display reads "0". Make changes slowly when changing this value.

Fig. 71: Navigation Screen Display - Trip Calibrate

Solar Angle

NOTE:

This model does not use this feature.

This screen graphically displays the sun's position as determined by GPS. The climate control system uses the navigation systems sun angle, along with the sunlight sensor to control the driver/passenger A/C air flow. The heat that the climate control unit removes varies, depending on the angle of the sun entering the vehicle. This screen is for factory use only, and should not be adjusted.

• The screen shows a circular diagram of the sky oriented in the direction that the vehicle is pointing. During daylight hours a red dot is shown, representing the direction and elevation of the sun. The outer circle represents the horizon (0 degrees elevation). The middle circle is 30 degrees, the center circle is 60 degrees, and the very center is directly overhead (90 degrees).
• The "Auto button" should always be on (yellow).
• The "Angle", "Dir", and "Reliability" settings are used by the factory to simulate the sun's position for debugging this function.

  Fig. 72: Navigation Screen Display - Solar Angle

Log Data

This screen allows the factory to select log data to troubleshoot navigation system issues.

• Normally there is no card in the "PC Card Slot", and the PC slot door should always be closed. The screen should look like this.

  Fig. 73: Navigation Screen Display - Log Data

• However, if the factory instructs you to insert a PC Card, insert it into the card slot (label side up), and then slide the PC Card door shut. If instructed by the factory, touch the "Gyro. Sensor Logs ON" button on the screen. Follow the factory procedure for gathering test data, and properly ending the test.

  Fig. 74: Navigation Screen Display - Log Data

GPS Offset Time

This screen is for factory use only. It allows adjustment of the GPS time. This display updates in real time.

• "GPS Time" is the time as received from the GPS satellites. It is in Greenwich Mean Time (GMT).
• "System Time" is the internal time used by the navigation unit to calculate your position on the map. It is also in Greenwich Mean Time (GMT).
• "Display Time" is the time shown on Setup screen 2 "Adjust Time Zone/Clock", and reflects any changes due to daylight savings time or time adjustments entered by the client.
• Date, Hour, Minute, and "Set" buttons should not be used.

  Fig. 75: Navigation Screen Display - GPS Offset Time

Mic Level

This diagnostic allows you to independently test the microphone and the TALK and BACK buttons. They are used to activate the voice control system. The microphone is located near the map light in the ceiling. It is directional, and works best if the voice is coming from the driver's seat.

• Press the TALK button on the steering wheel, and in a normal voice say "testing". The TALK indicator on the screen should momentarily turn green, and the text "Now Recording..." should appear in yellow. In addition, the Mic Level indicator should on the screen does not briefly turn green, then check the wiring from the TALK button to the navigation unit. If there is no "Mic Level" movement when you speak, then you should check the wire running from the microphone to the control unit.
• Press the BACK button on the steering wheel. This should cause the Cancel indicator on the screen to momentarily turn green. If it does not briefly turn green, then check the wiring from the steering wheel BACK button to the navigation unit.

NOTE:

The Mic Level indicator must reach the 6th bar or greater to pass the test.

Fig. 76: Navigation Screen Display - Mic Level

VSP Count

This screen displays the number of pulses per revolution of the tire. This is for factory use only, and should not be changed.

• "Pulse Count Setting" should always be set to "Auto".
• "VSP Count" should always be "4", and should never be adjusted or set to any other value.

  Fig. 77: Navigation Screen Display - VSP Count

H/U Time Send

This screen determines whether to automatically send the navigation time to the upper display. The display unit connector A (10P) passes this information to the subdisplay unit. The navigation time can be found in the Setup screen 2 "Adjust Time Zone/Clock" setting.

• "H/U Time Send" should always be set to "ON".

NOTE:

Selecting "Reset" on the Adjust Time Zone/ Clock screen automatically resets this diagnostic function to "ON".

Fig. 78: Navigation Screen Display - H/U Time Send

Demonstration

This screen is for factory use only, and should always be set to "OFF". Occasionally this setting is turned "ON" when vehicles are being used at Auto Shows or similar events. Turning this feature on, allows the navigation system to automatically follow a route to a destination when the vehicle is stationary.

Fig. 79: Navigation Screen Display - Demonstration

Version

This screen displays the current version of the program, and allows the loading of a new version of the program either from a CD/DVD or from a PC card.

The D-Ram Program version should always be greater than or equal to the Disc Program version. The mapped database version is the date of the database on the DVD.

The Model code is 22H ('04 model) or 27H ('05 model), and is for factory use only. This code is stored on a chip in the navigation unit. Therefore, every model has a unique part number for the navigation unit. If the code is different than the value above, replace the navigation unit (see NAVIGATION UNIT REMOVAL/INSTALLATION ).

Do not use either of the load buttons, unless instructed to do so by the factory.

Fig. 80: Navigation Screen Display - Version

Error Message Table

SCREEN ERROR MESSAGE REFERENCE

Screen Error Message	Solution
Navigation system is unable to acquire a proper GPS signal.	Make sure there is nothing on the rear package tray blocking the GPS antenna. If not, move the vehicle to an open space away from tall buildings, trees, etc. Rear window tinting and after-market devices can affect the GPS reception.
Navigation unit door is open or No DVD disc installed. Please check system.	Make sure the navigation DVD is installed with the label side up and the navigation unit door is snapped fully closed.
PC card slot door is open. Please check system.	Make sure that the sliding door for the PC card is fully closed.
No DVD disc, please check system.	Check that the navigation DVD is installed with the label side up.
Display temp is too high. System will shut down until display cools down.	This message will appear brietly when the display temperature is too high, and then the display will turn off until the temperature cools down. The system will turn back on when the display cools down.
Outside temperature is low, system will take a while to start up.	The temperature is below -30°C and the navigation ECU has difficulties reading the DVD. The system will start up when the temperate warms up.
DVD disc reading error (unformatted), please consult your dealer.	Check the DVD source for deep scratches or other damage. Make sure you are using an official Honda navigation DVD (orange in color). The system cannot read other mapping databases or video DVDs. If the problem persists, see your dealer.
Route has not been completed. Please try again from a different location.	Routing to or from a place (new area) that is not in the database. Try planning a different route to or from a different location.
No alternate route found. Original route will be guided.	No alternate route method was found. The original route will be used.
This destination cannot be found in database.	The destination was not found in the database. Try another destination nearby, or select the destination with the joystick.

Forced Starting of Display

Special Tools Required

SCS service connector 07PAZ-0010100

1. Connect the SCS service connector (A) to the navigation service check connector (B) located behind the navigation unit.

   Fig. 81: Identifying SCS Service Connector And Navigation Service Check Connector

2. Check that the diagnosis menu for the picture diagnosis starts up and then changes to the system link menu.

   NOTE:

   If the display fails to the system link screen is not displayed, refer to NO PICTURE IS DISPLAYED .

DVD-ROM Replacement

NOTE:

When the DVD-ROM is re-inserted or replaced, a map match must be done (see MAP MATCHING ).

1. Turn the ignition switch ON (II).
2. Open the front cover (A) of the navigation unit (B) located trunk room.

   Fig. 82: Identifying Front Cover And Navigation Unit

3. Press the EJECT button (C).
4. Remove the DVD-ROM.
5. Insert the new DVD-ROM.
6. Close the front cover. Do not turn the ignition switch to LOCK (0), until data is down loaded to navigation unit.

   NOTE:

   After servicing, the front cover must be closed. If you start up the navigation system with the front cover open, the display will indicate. "Navigation unit door is open or No DVD Disk installed. Please check system".

Navigation Unit Removal/Installation

1. Remove the four screws (A) from the bracket (B) located the trunk room.

   Fig. 83: Identifying Bracket, Navigation Unit Connectors, Navigation Unit And Screws

2. Disconnect the navigation unit connectors (C).
3. Remove the navigation unit (D).
4. Install in the reverse order of removal.

GPS Antenna Removal/Installation

1. Remove the rear shelf (see TRIM REMOVAL/INSTALLATION - REAR SHELF AREA ).
2. Disconnect the GPS antenna connector (A).

   Fig. 84: Identifying GPS Antenna Connector And GPS Antenna

3. Remove the GPS antenna (B).
4. Install in the reverse order of removal.

Voice Control Switch Test/Replacement

1. Remove the voice control switch cover (A) from left side of the steering wheel.

   Fig. 85: Identifying Voice Control Switch Cover, Voice Control Switch And Screw

2. Remove the two screws (B) from the voice control switch (C), then remove the voice control switch.
3. Disconnect the voice control switch connector.
4. Measure the resistance between the No. 1 and No. 2 terminals in each switch position according to the table.

   Voice Control Switch (Terminal No. 1 and No. 2)

   RESISTANCE REFERENCE
   

   Position	Resistance
   OFF	About 10 kohms
   Talk button pressed	About 29 kohms
   Back button pressed	About 680 ohms

5. If the resistance is not as specified, replace the switch.

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