Possible Causes

REAR WINDOW DEFOGGER GROUND CKT

REAR WINDOW DEFOGGER GRID OPEN

REAR WINDOW DEFOGGER RELAY OUTPUT OPEN

FUSED IGNITION SWITCH OUTPUT (RUN) OPEN

FUSED B(+) CKT OPEN

RELAY COIL

RELAY CONTACTS

REAR WINDOW DEFOGGER RELAY CONTROL CIRCUIT OPEN

REAR WINDOW DEFOGGER SWITCH SENSE CKT OPEN

REAR WINDOW DEFOGGER SWITCH SENSE CKT SHORTED TO GROUND

REAR WINDOW DEFOGGER SWITCH SENSE CKT SHORTED TO VOLTAGE

REAR WINDOW DEFOGGER SWITCH

INSTRUMENT CLUSTER