Fig. 1: Identifying Cruise Control Component Location
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SYMPTOM TROUBLESHOOTING CHART
Symptom
Diagnostic procedure
Also check for
Cruise control cannot be set
Poor ground G501
Cruise control can be set, but the cruise main indicator does not come on
Faulty gauge control module
Cruise control can be set, but the cruise control indicator does not come on
Faulty gauge control module
Vehicle does not decelerate or accelerate accordingly when the set/ decel or resume/accel switch is pressed
Open circuit, loose or disconnected terminals: LT GRN or GRY wire
Set speed does not cancel when the brake pedal is pressed
Set speed does not cancel (engine rpm stays high) when the clutch pedal is pressed (M/T)
Set speed does not cancel when the cruise control main switch is turned off
Short to ground in the LT GRN wire
Set speed does not cancel when the cancel switch is pressed
Open circuit, loose or disconnected terminals: LT GRN or GRY wire
Set speed will not resume when the resume/accel switch is pressed (with the cruise control main switch turned on, and set speed temporarily canceled by pressing the brake pedal)
Set speed will not resume when the resume/accel switch is pressed (with the cruise control main switch turned on, and set speed temporarily canceled by pressing the clutch pedal) (M/T)
Fig. 2: Cruise Control - Circuit Diagram
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NOTE:
Intermittent failures are often caused by loose circuit connections. While monitoring cruise control inputs, flex their circuits, and note if any of the test results change.
PGM-FI DATA LIST
Signal to be tested
Test condition
Parameter: Desired result
Possible cause if result is not obtained
Brake pedal position switch signal
Brake pedal pressed, then released
CRUISE BRAKE SW should indicate OFF when the brake pedal is pressed and ON when the brake pedal is released.
Clutch pedal position switch signal (M/T)
Clutch pedal pressed, then released
SHIFT/CLUTCH SW should indicate OFF when the clutch pedal is pressed and ON when the clutch pedal is released.
Transmission range switch signal (A/T)
Shift lever in D, M, or D3 position
SHIFT/TRANS RANGE SW should indicate OFF in P, R, and N position and ON in D, M, and D3.
Cruise control main switch signal
Cruise control main switch ON and OFF
CRUISE MASTER SW should indicate ON when the cruise control main switch is turned ON and OFF when the cruise control main switch is turned OFF.
Set switch signal
Set/decel switch pressed and released
CRUISE SET SW should indicate ON when the set/decel switch is pressed and OFF when the set/decel switch is released.
Resume switch signal
Resume/accel pressed and released
CRUISE RESUME SW should indicate ON when the resume/accel is pressed and OFF when the resume/accel is released.
Cancel switch signal
Cancel switch pressed and released
CRUISE CANCEL SW should indicate ON when the cancel switch is pressed and OFF when the cancel switch is released.
Faulty cruise control combination switch
Cruise control indicator signal
Start the engine, turn the cruise control main switch on and drive the vehicle above 25 mph (40 km/h) with the cruise control set and cancel the cruise control
CRUISE LIGHT should indicate ON when the cruise control is set and OFF when the cruise control is canceled.
Faulty gauge control module
SRS components are located in this area. Review the SRS component location index (see COMPONENT LOCATION INDEX ) and precautions and procedures (see PRECAUTIONS AND PROCEDURES ) in the SRS before testing the solenoid.
Fig. 3: Identifying Switch Screws And Connector
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Fig. 4: Checking Continuity Between Terminals In Switch Position
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SRS components/are located in this area. Review the SRS component location index (see COMPONENT LOCATION INDEX ) and \precautions and procedures (see PRECAUTIONS AND PROCEDURES ) in the SRS before testing the solenoid.
Fig. 5: Identifying Driver's Airbag Switch Connector Terminals
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Without navigation
Fig. 6: Checking For Continuity Between Terminals Without Navigation
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With navigation
Fig. 7: Checking For Continuity Between Terminals With Navigation
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Fig. 8: Identifying Clutch Pedal Position Switch 3P Connector
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Fig. 9: Checking Continuity Between Terminals
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