Rear Window Defogger Switch Circuit Check

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 

Fig 1: CONSULT-II Display - Data Monitor

Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG 

OK: Rear window defogger switch is OK.

NG: GO TO 2.

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.