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8A-486 ELECTRICAL-BODY AND CHASSIS TROUBLE SHOOTING Rear defogger inoperative
Checkpoint Trouble Cause
Countermeasure
B56
Poor fuse contact or blown
NG
Reinstall or replace the fuse C18 (20A)
C18 (20A, Fuse box)
Poor fuse contact or blown
Replace the rear defogger switch
Rear defogger switch function
Switch malfunction
NG NG OK OK OK B56
Replace the rear defogger relay
Relay malfunction
NG Continued on the next page
Rear defogger relay function
Repair grounding point contact
Grounding point C2
Poor grounding point contact
NG OK Repair open circuit or poor B7 , C18 (20A) and 1
B7 , 2 B7 (3 B55 ) and 1 L4 , 4 B7 (3 B54 ) and 3 B46 or 1 B46 and
C2
Voltage between 1 L4 - ground when the starter switch
Open circuit or poor connector contact
NG OK
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