Without Navigation

REAR WINDOW DEFOGGER SWITCH

WITHOUT NAVIGATION : Diagnosis Procedure


1. CHECK A/C CONTROL (REAR WINDOW DEFOGGER SWITCH)

Check A/C control system.
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. Base Audio (Base audio)
or Bose Audio (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.