Inspection Procedure 1

INSPECTION PROCEDURE 1: None of the Heated Door Mirrors Operate





















CIRCUIT OPERATION

If both of the door mirror heaters do not operate normally it may be due to a malfunction in the rear window defogger system.

TROUBLESHOOTING HINTS

- Malfunction of the rear window defogger system
- The wiring harness or connectors may have loose, corroded or damaged terminals, or terminals pushed back in the connector.

DIAGNOSIS

Required Special Tools:

- MB991223: Test Harness Set


STEP 1. Check the rear window defogger.

Check that the rear window defogger works normally as follows.

(1)Turn the ignition switch to the "ON" position.

(2)Push the rear window defogger switch to operate the defogger.

Q. Does the defogger work normally?

YES Go to Step 2.
NO Because of malfunction of the rear window defogger, carry out the troubleshooting
Manual Air Conditioning.
STEP 2. Check the door mirror (RH) connector E-03 and rear window defogger relay connector C-306 for loose, corroded or damaged terminals, or terminals pushed back in the connector.

Q. Is the door mirror (RH) connector E-03 and rear window defogger relay connector C-306 in good condition?

YES Go to Step 3.
NO Repair or replace the damaged component(s). Harness Connector Inspection. Check if the door mirrors works normally.
STEP 3. Check the wiring harness between the door mirror (RH) connector E-03 (terminal 5) and rear window defogger relay connector C-306 (terminal 3).

NOTE:
Also check intermediate connector C-115 for loose, corroded or damaged terminals, or terminals pushed back in the connector. If intermediate connector C-115 is damaged, repair or replace the damaged component(s) as described in Harness Connector Inspection Harness Connector Inspection.

Q. Is the wiring harness between door mirror (RH) connector E-03 (terminal 5) and rear window defogger relay connector C-306 (terminal 3) in good condition?

YES Go to step 4.
NO Repair the wiring harness as necessary. Check if all heated door mirrors work normally.
STEP 4. Check door mirror (LH) connector E-01.

Q. Is the door mirror (LH) connector E-01 in good condition?

YES Go to Step 5.
NO Repair or replace the damaged component(s). Check if all heated door mirrors work normally.
STEP 5. Check the wiring harness between door mirror (LH) connector E-01 (terminal 5) and rear window defogger relay connector C-306 (terminal 3).

NOTE:
Also check intermediate connector C-126 for loose, corroded or damaged terminals, or terminals pushed back in the connector. If intermediate connector C-126 is damaged, repair or replace the damaged component(s) as described in Harness Connector Inspection Harness Connector Inspection.

Q. Is the wiring harness between door mirror (LH) connector E-01 (terminal 5) and rear window defogger relay connector C-306 (terminal 3) in good condition?

YES The procedure is complete.
NO Repair the wiring harness as necessary. Check if the all heated door mirrors work normally.