Rear Window Defogger Signal Check

A/C and AV switch self-diagnosis is performed. Refer to "A/C AND AV SWITCH SELF-DIAGNOSIS FUNCTION "

Does rear window defogger switch light? 

1. YES: GO TO 2.
2. NO: Replace A/C and AV switch.

AV communication line check is performed. Refer to "AV COMMUNICATION LINE INSPECTION "

Is rear window defogger displayed on the display? 

1. YES: GO TO 3.
2. NO: Replace display control unit.

CAN communication line check is performed. Refer to "CAN COMMUNICATION LINE INSPECTION "

OK or NG 

1. OK: Check condition of harness and connector.
2. NG: In addition, it is necessary to check CAN communication line. Refer to "CAN COMMUNICATION LINE INSPECTION "