2004-08 ACCESSORIES & EQUIPMENT
Rear Window Defogger - TSX
Component Location Index
Fig. 1: Identifying Rear Window Defogger Component Location
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Circuit Diagram
Fig. 2: Rear Window Defogger - Circuit Diagram
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Function Test
Before troubleshooting the rear window circuit, perform multiplex integrated control system troubleshooting using B-CAN System Diagnosis Test Mode A (see
TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A
).
NOTE: |
- Be careful not to scratch or damage the defogger wires with the tester probe.
- Before testing, check the No. 14 (40 A) fuse in the under-hood fuse/relay box and No. 30 (7.5 A) fuse in the under-dash fuse/relay box.
|
- Measure the voltage between the positive terminal (A) and body ground with the ignition switch and defogger switch ON.
There should be battery voltage.
- Disconnect the negative terminal (B) from the rear window defogger.
- Check for continuity between the negative terminal (B) and body ground.
If there is no continuity, check for an open in the BLK/YEL wire and ground. If there is continuity, go to step 4.
- Reconnect the negative terminal to the rear window defogger.
- Turn the ignition switch ON (II) and the rear window defogger switch ON.
- Touch the voltmeter positive probe to the points (1), (2), (3) on each defogger wire, and the negative probe to the negative terminal.
- If the voltage is as specified, the defogger wire up to that point is OK.
- If the voltage is not as specified, repair the defogger wire.
- If it is more than specified atone of the points, there is a break in the negative half of the wire.
- If it is less than specified at one of the points, there is a break in the negative half of the wire.
Defogger Wire Repair
NOTE: |
To make an effective repair, the broken section must be no longer than 1 inch (25 mm). |
- Lightly rub the area around the broken section (A) with fine steel wool, then clean it with isopropyl alcohol.
Fig. 4: Identifying Broken Section
Courtesy of AMERICAN HONDA MOTOR CO., INC.
- Carefully mask above and below the broken portion of the defogger wire (B) with cellophane tape (C).
- Using a small brush, apply a heavy coat of thoroughly mixed silver conductive paint (commercially available) extending about 1/8" on both sides of the break. Allow 25 minutes to dry.
Fig. 5: Applying Heavy Coat Of Thoroughly Mixed Silver Conductive Paint
Courtesy of AMERICAN HONDA MOTOR CO., INC.
- Perform the function test to confirm that the wire is repaired.
- Apply a second coat of paint in the same way. Let it dry 3 hours before removing the tape.