INSPECTION PROCEDURE 5: Relevant power window does not work by means of the front passenger’s power window sub switch <Vehicles with driver’s side auto down mechanism>.


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 front passenger’s power window do not work by means of the respective power window sub switch, a malfunction of the power window sub switch or the power window motor is suspected. Also, the power window lock switch ON signal may be sent from the power window main switch, because the power window lock switch of the power window main switch is ON, or the power window main switch has a malfunction.

PROBABLE CAUSES



DIAGNOSIS PROCEDURE


STEP 1. Check the power window main switch.


Check that the power window lock switch is turned off.

Q. Is the check result normal?

Go to Step 2.

Turn off the power window lock switch.

STEP 2. Check the front power window sub switch


Check that the front power window sub switch works normally. Refer to Power Window Sub Switch Continuity Check .

Q. Is the check result normal?

YES <LHD> : Go to Step 3.

YES <RHD> : Go to Step 4.

Replace the front power window sub switch.

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


Check that the front power window motor (LH) <LHD> works normally. Refer to Power Window Motor Continuity Check .

Q. Is the check result normal?

Go to Step 5.

Replace the front power window motor (LH) <LHD>.

STEP 4. Check the front power window motor (RH) <RHD>


Check that the front power window motor (RH) <RHD> works normally. Refer to Power Window Motor Continuity Check .

Q. Is the check result normal?

Go to Step 5.

Replace the front power window motor (RH) <RHD>.

STEP 5. Voltage measurement at front power window sub switch connector (power supply line)


(1)Disconnect the connector, and measure at the wiring harness side.
(2)Turn the ignition switch to the ON position.
(3)Measure the voltage between the front power window sub switch connector (power supply line) and the body earth.
OK: System voltage

Q. Is the check result normal?

YES <LHD> : Go to Step 7.

YES <RHD> : Go to Step 8.

Go to Step 6.

STEP 6. Check of short to power supply, short to earth, and open circuit in power supply line between the front power window sub switch connector and the power window relay connector


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 ).

Repair the wiring harness.

STEP 7. Check of short to power supply, short to earth, and open circuit in input/output line between the front power window sub switch connector and the front power window motor (LH) <LHD> connector


Q. Is the check result normal?

Go to Step 9.

Repair the wiring harness.

STEP 8. Check of short to power supply, short to earth, and open circuit in input/output line between the front power window sub switch connector and the front power window motor (RH) <RHD> connector


Q. Is the check result normal?

Go to Step 9.

Repair the wiring harness.

STEP 9. Retest the system.


(1)Check that the front passenger’s door power window can be operated by the front power window sub switch.

Q. Is the check result normal?

The trouble can be an intermittent malfunction (Refer to GROUP 00, How to use Troubleshooting/inspection Service Points - How to Cope with Intermittent Malfunction ).

Go to Step 1.