Inspection Procedure 1: All Heated Door Mirrors do not Operate


caution Whenever the ECU is replaced, ensure that the input and output signal circuits are normal.


COMMENTS ON TROUBLE SYMPTOM
The heated door mirrors should work for approximately 20 minutes when the rear defogger switch is turned on. If the mirror heater does not work for the specified period, the defogger relay circuit (heated door mirror power supply circuit) may be defective.

PROBABLE CAUSE

  • Damaged harness wires and connectors

DIAGNOSIS PROCEDURE

STEP 1. Check the rear window defogger.
The rear defogger system should work normally (Refer to GROUP 54A, Rear Window Defogger Check ).

Q. Is the check result normal?
Go to Step 2.
Diagnose the rear window defogger (Refer to GROUP 55B, Troubleshooting ).

STEP 2. Connector check: B-231 junction block connector.

Q. Is the check result normal?

The trouble can be an intermittent malfunction (Refer to GROUP 00, How to use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunction ).

Repair the defective connector.