Rear Window Defogger Signal Check

Unified meter and A/C amp. self-diagnosis is executed. Refer to "AV SWITCH SELF-DIAGNOSIS FUNCTION "

Does rear window defogger switch light? 

OK or NG 

OK:  GO TO 2.

NG:  Replace unified meter and A/C amp. Refer to "UNIFIED METER AND A/C AMP. ".

Check AV communication line. Refer to "AV COMMUNICATION LINE CHECK "

Is rear window defogger displayed on the display? 

OK or NG 

OK:  GO TO 3.

NG:  Replace display control unit. Refer to STEERING WHEEL AUDIO CONTROL SWITCH CHECK .

CAN communication line check is executed. Refer to "CAN COMMUNICATION LINE CHECK "

OK or NG 

OK:  Check the condition of the harness and the connector.

NG:  In addition, it is necessary to check CAN communication line. Refer to "CAN COMMUNICATION LINE CHECK "