Inspection Procedure D-3

Power Window: Only Door Window (LH) does not Work by Operating Power Window Main Switch.

Power Window (LH) Circuit:

CIRCUIT OPERATION
The front power window motor (LH) opens or closes the door window (LH) when the power window main switch is moved to "UP" or "DOWN" position.

TECHNICAL DESCRIPTION (COMMENT)
The power window main switch or the front power window motor (LH) may be defective.

TROUBLESHOOTING HINTS
- The power window main switch may be defective
- The power window motor (front: LH) may be defective
- The wiring harness or connectors may have loose, corroded, or damaged terminals, or terminals pushed back in the connector

DIAGNOSIS

Required Special Tool:
- MB991223: Harness Set




STEP 1. Check power window main switch connector E-12 and power window motor (LH) connector E-11 for loose, corroded or damaged terminals, or terminals pushed back in the connector.

Q: Are power window main switch connector E-12 and front power window motor (LH) connector E-11 in good condition?

YES: Go to Step 2.

NO: Repair or replace the damaged component(s). Refer to Harness Connector Inspection. When the power window main switch is operated, the front power window (LH) should open and close normally.

STEP 2. Check the power window main switch.







1. Remove the power window main switch. Refer to Door - Door Trim and Waterproof Film.




2. Check continuity while power window main switch is moved to "UP" and "DOWN" position.

Q: Is the power window main switch normal?

YES: Go to Step 3.

NO: Replace the power window main switch. When the power window main switch is operated, the front power window (LH) should open and close normally.

STEP 3. Check the front power window motor (LH).




1. Remove the front power window motor (LH). Refer to Door - Door Glass and Regulator.




2. Connect a battery to the motor terminal, and check that the motor runs freely.

Q: Is the power window motor (LH) normal?

YES: Go to Step 4.

NO: Replace the power window motor (LH). When the power window main switch is operated, the power window (front: LH) should open and close normally.




STEP 4. Check the wiring harness between power window main switch connector E-12 (terminals 1 and 5) and front power window motor (LH) connector E-11 (terminals 1 and 2).

Q: Is the wiring harness between power window main switch connector E-12 (terminals 1 and 5) and front power window motor (LH) connector E-11 (terminals 1 and 2) in good condition?

YES: No action is necessary and testing is complete.

NO: The wiring harness may be damaged or the connector(s) may have loose, corroded or damaged terminals, or terminals pushed back in the connector. Repair the wiring harness as necessary. When the power window main switch is operated, the front power window (LH) should open and close normally.