3. LF Window Does Not Open Or Close

CIRCUIT OPERATION
When the power window switch is operated up or down, the operation side relay turns on, the power window motor operates, and opens or closes the door window.

TECHNICAL DESCRIPTION (COMMENT)
The cause may be a malfunction of the front power window motor [LH] drive circuit.

TROUBLESHOOTING HINTS
- Malfunction of the power window relay
- Malfunction of the FRONT-ECU
- Damaged harness wires or connectors

DIAGNOSIS
STEP 1. Check the power window main switch continuity.
1. Remove the power window main switch.







2. Check the continuity when the front power window main switch [LH] is turned to the UP position or DOWN position.
If the power window main switch is damaged, replace it. Then go to Step 4.
If the power window main switch is not damaged, go to Step 2.




STEP 2. Check the front power window motor [LH] operation.
1. Remove the front power window motor [LH].
2. Connect a battery directly to the motor terminals and check that the motor runs smoothly.

3. Check that the motor runs in the opposite direction when the battery is connected with the polarity reversed.
If the front power window motor [LH] is damaged, replace it. Then go to Step 4.
If the front power window motor [LH] is not damaged, go to Step 3.




STEP 3. Check the harness wires between power window main switch connector E-16 and front power window motor [LH] connector E-17.
If any harness wire between power window main switch connector E-1 6 and front power window motor [LH] connector E-17 is damaged, repair it. Then go to Step 4.

STEP 4. Check symptoms
Confirm that the front door window [LH] opens and closes normally.