Without Navigation Coupe

REAR WINDOW DEFOGGER SWITCH:_:WITHOUT NAVIGATION





Description
- The rear window defogger is operated by turning the rear window defogger switch ON.
- The indicator lamp in the A/C controller illuminates when the rear window defogger is operating.




Component Function Check
1.CHECK FUNCTION
With CONSULT-III
1. Turn ignition switch ON.
2. Select "REAR DEFOGGER" or "BCM" using CONSULT-III.
3. Select "REAR DEF SW" in "DATA MONITOR" mode.
4. Check that the function operates normally according to the following conditions.





Is the inspection result normal?
YES - Rear window defogger switch function is OK.
NO - SEE Diagnosis Procedure.




Diagnosis Procedure
1.CHECK A/C CONTROL (REAR WINDOW DEFOGGER SWITCH)
Check A/C control system. Automatic Air Conditioner Without 7 Inch Display.
Is the inspection result normal?
YES - GO TO 2.
NO - Repair or replace the malfunctioning parts.
2.CHECK BCM OUTPUT SIGNAL
1. Turn ignition switch OFF.
2. Disconnect A/C auto amp. connector.
3. Turn ignition switch ON.
4. Check signal between A/C auto amp. harness connector and ground with oscilloscope.






Is the inspection result normal?
YES - Replace A/C auto amp. Removal And Installation Base Audio Without 7 Inch Display (Base audio) or Removal And Installation Bose Audio Without Navigation Without 7 Inch Display (Bose audio without navigation).
NO - GO TO 3.
3.CHECK REAR WINDOW DEFOGGER SWITCH CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM connector.
3. Check continuity between BCM harness connector and A/C auto amp. connector.





4. Check continuity between BCM harness connector and ground.





Is the inspection result normal?
YES - Replace BCM. Removal And Installation.
NO - Repair or replace harness.