INSPECTION PROCEDURE C-8: The driver’s power window inches only.


caution Before replacing the ECU, ensure that the power supply circuit, the earth circuit and the communication circuit are normal.

COMMENTS ON TROUBLE SYMPTOM


Malfunction of the power window motor revolution detection sensor or incorrectness of glass slider installation is suspected.

PROBABLE CAUSES



DIAGNOSTIC PROCEDURE


STEP 1. How to make the power windows learn heir fully closed position


Make the power widows learn their fully closed position.()

Q. Is the check result normal?

This diagnosis is complete.

Go to Step 2

STEP 2. Check whether the window inches.


Q. Does the window inch up ONLY, or up and down (both directions)?

Inches up ONLY : Go to Step 3.

Inches up and down. : Go to Step 5.

STEP 3. Check of short to power supply, short to earth, and open circuit in SEN1, SEN2 line between power window main switch connector and front power window motor (LH <LH drive vehicles>, RH <RH drive vehicles>) connector.


Q. Is the check result normal?

Go to Step 4.

Repair the connector(s) or wiring harness. Then go to Step 4.

STEP 4. Retest the system.


(1)Make the power widows learn their fully closed position.()
(2)Check that the driver’s power window works normally.

Q. Is the check result normal?

Intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunction .)

Replace the power window main switch (Refer to GROUP 52A, Trims - Door trim ).

STEP 5. Check of short to power supply, short to earth, and open circuit in SEN1, SEN2, SGND, VCC line between power window main switch connector and front power window motor (LH <LH drive vehicles>, RH <RH drive vehicles>) connector.


Q. Is the check result normal?

Go to Step 6.

Repair the connector(s) or wiring harness. Then go to Step 7.

STEP 6. Voltage measurement at power window main switch connector (VCC terminal).


(1)Disconnect the connector, and measure at the wiring harness side.
(2)Measure the voltage between the power window main switch connector (VCC terminal) and body earth.
OK: 5V

Q. Is the check result normal?

Go to Step 7.

Replace the power window main switch (Refer to GROUP 52A, Trims - Door trim ).

STEP 7. Retest the system.


(1)Make the power widows learn their fully closed position.()
(2)Check that the driver’s power window works normally.

Q. Is the check result normal?

Intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunction .)

Replace the front power window motor (LH <LH drive vehicles>, RH <RH drive vehicles>.