INSPECTION PROCEDURE C-4: Front and/or rear passenger’s power window(s) do not work by means of the power window main switch.


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

COMMENTS ON TROUBLE SYMPTOM


If the passenger’s and/or rear power window does not work by means of the power window main switch, the power window main switch or the respective power window sub switch(es) may be defective.

PROBABLE CAUSES



DIAGNOSTIC PROCEDURE


STEP 1. Check the power window main switch.


Check that the driver’s power window works by means of the power window main switch.

Q. Is the check result normal?

Go to Step 2

Refer to inspection procedure 2 "Driver’s power window does not work by means of the power window main switch ."

STEP 2. Check the power window sub switch.


Check that each power window works by means of the respective power window sub switch when the power window lock switch is turned off.

Q. Is the check result normal?

Go to Step 3

Refer to inspection procedure 3 "Relevant power window(s) does not work by means of the front and rear passenger’s power window sub switches ."

STEP 3. Determine a trouble spot.


Q. Which power window does not work?

Front passenger’s door : Go to Step 4

Rear right door : Go to Step 6

Rear left door : Go to Step 8

STEP 4. Check of short to power supply, short to earth, and open circuit in U.AS, D.AS line between power window main switch connector and front power window sub switch connector.


Q. Is the check result normal?

Go to Step 5

Repair the connector(s) or wiring harness.

STEP 5. Retest the system.


(1)Replace the front power window sub switch.
(2)Make the power widows learn their fully closed position.()
(3)Check that the front passenger’s power window works by means of the power window main switch.

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 6. Check of short to power supply, short to earth, and open circuit in U.RR, D.RR line between power window main switch connector and front power window sub switch connector.


Q. Is the check result normal?

Go to Step 7

Repair the connector(s) or wiring harness.

STEP 7. Retest the system.


(1)Replace the rear power window sub switch (RH).
(2)Make the power widows learn their fully closed position.()
(3)Check that the rear right power window works by means of the power window main switch.

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 8. Check of short to power supply, short to earth, and open circuit in U.RL, D.RL line between power window main switch connector and front power window sub switch connector.


Q. Is the check result normal?

Go to Step 9

Repair the connector(s) or wiring harness.

STEP 9. Retest the system.


(1)Replace the rear power window sub switch (LH).
(2)Make the power widows learn their fully closed position.()
(3)Check that the rear left power window works by means of the power window main switch.

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 ).