STEP
INSPECTION
ACTION
1
INSPECT FILAMENT WITH REAR DEF RELAY REMOVED
Turn the ignition switch to the LOCK position.
Disconnect the rear def relay.
Turn the ignition switch to the ON position.
Inspect the filament with the rear def relay removed.
Is the rear window defroster still ON?
Yes
Go to the Step 5.
No
Go to the next step.
2
INSPECT REAR DEF RELAY
inspect rear def relay. (See RELAY INSPECTION.)
Is the rear def relay normal?
Yes
Go to the next step.
No
Replace the rear def relay.
3
INSPECT RELATED WIRING HARNESS FOR SHORT TO GROUND
Turn the ignition switch to the LOCK position.
Disconnect the rear window defroster switch.
Measure the resistance between the rear window defroster switch terminal D and ground.
Is the resistance more than 10,000 ohms?
Yes
Replace the rear window defroster switch.
No
Go to the next step.
4
INSPECT SJB FOR INTERNAL SHORT
Disconnect the SJB J-05 connector.
Measure the resistance between rear window defroster switch terminal D and ground.
Is the resistance more than 10,000 ohms?
Yes
Go to Step 7.
No
Repair the related wiring harness.
5
INSPECT RELATED WIRING HARNESS FOR SHORT TO VOLTAGE
Turn the ignition switch to the LOCK position.
Disconnect the filament.
Disconnect the SJB J-05 connector.
Turn the ignition switch to the ON position.
Measure the voltage at the filament terminal 1A.
Is the voltage more than 10 V?
Yes
Repair the related wiring harness.
No
Go to the next step.
6
INSPECT RELATED WIRING HARNESS FOR SHORT TO VOLTAGE
Measure the voltage at rear window defroster switch terminal C.
Is the voltage present?
Yes
Repair the related wiring harness.
No
Go to the next step.
7
INSPECT SJB OPERATION
Disconnect all SJB connectors.
Inspect for the following items:
• Corrosion
• Terminal separation
Connect all the connectors and verify that their positions are correct.
Operate the system and inspect for any malfunction.
Is there any malfunction?
Yes
Replace the SJB.
No
The malfunction may result from loose connectors or corrosion.
Clear the DTC.
Repeat the DTC inspection.
