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REAR WINDOW DEFOGGER RELAY DEF-11 < COMPONENT DIAGNOSIS > C D E F G H I J K M A B DEF N O P REAR WINDOW DEFOGGER RELAY Description INFOID:0000000004216324 Power is supplied to the rear window defogger with BCM control. Component Function Check INFOID:0000000004216325 1. CHECK REAR WINDOW DEFOGGER RELAY POWER SUPPLY CIRCUIT Check that an operation noise of rear window defogger relay [located in fuse block (J/B)] can be heard when turning the rear window defogger switch ON. YES >> Rear window defogger relay power supply circuit is OK. NO >> Refer to Diagnosis Procedure INFOID:0000000004216326 1. CHECK REAR WINDOW DEFOGGER RELAY GROUND CIRCUIT 1. Turn ignition switch ON. 2. Check voltage between BCM connector and ground. Is the inspection result normal? YES >> Rear window defogger power supply circuit is OK. NO >> GO TO 2 2. CHECK HARNESS CONTINUITY 1. Turn ignition switch OFF. 2. Disconnect BCM and fuse block (J/B). 3. Check continuity between BCM connector (A) and fuse block (J/ B) connector (B). Is the inspection result normal? YES >> GO TO 3 NO >> Repair or replace harness. 3. CHECK REAR WINDOW DEFOGGER RELAY Check rear window defogger relay. DEF-12, "Component Inspection" . Is the inspection result normal? YES >> GO TO 4 NO >> Replace rear window defogger relay. 4. CHECK INTERMITTENT INCIDENT Check intermittent incident. GI-42, "Intermittent Incident" . Is the inspection result normal? YES >> Check the following. Terminals Condition of rear window defogger switch Voltage (V) (Approx.) (+) (–) BCM connector Terminal M18 59 Ground ON 0 OFF Battery voltage ALLIA0175ZZ BCM connector Terminal Fuse block (J/B) connector Terminal Continuity M18 (A) 59 M4 (B) 4Q Yes ALLIA0176ZZ |