Check Rear Window Defogger Switch Circuit

With CONSULT-II 

Check ("REAR DEF SW", "IGN ON SW") in DATA MONITOR mode with CONSULT-II.

When rear window defogger switch is turned to ON 

REAR DEF SW : ON 

When ignition switch is turned to ON 

IGN ON SW : ON 

OK or NG 

OK: Rear window defogger switch is OK.

NG: GO TO 2.

Fig 1: CONSULT-II Function Screen Display - DATA MONITOR

Check AV line. Refer to TROUBLE DIAGNOSIS (with navigation system), TROUBLE DIAGNOSIS (without navigation system).

OK or NG 

OK: Check the condition of harness and connector.

NG: The diagnosis is continued.