INSPECTION PROCEDURE C-3: Relevant Power Window(s) does not work by means of The Front and Rear Passenger’s Power Window Sub Switches.


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 or rear power window(s) 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



DIAGNOSTIC 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. M.U.T.-III diagnosis code


Check that ETACS-ECU sets a diagnosis code.

Q. Is the diagnosis code set?

Refer to GROUP 54B - Troubleshooting .

Go to Step 3.

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 12.

Rear left door : Go to Step 20.

STEP 4. Connector check: E-05 front power window sub switch connector


Q. Is the check result normal?

Go to Step 5.

Repair the defective connector.

STEP 5. Resistance measurement at E-05 front power window sub switch connector


(1)Disconnect the connector, and measure at the wiring harness side.
(2)Measure the resistance between the E-05 front power window sub switch connector terminal No. 1 and the body earth.
OK: Continuity (less than 2 Ω)

Q. Is the check result normal?

Go to Step 7.

Go to Step 6.

STEP 6. Check of the wiring harness between the E-05 front power window sub switch connector terminal No. 1 and the body earth


note Prior to the wiring harness inspection, check C-113 intermediate connector, and repair if necessary.

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. Voltage measurement at E-05 front power window sub switch connector


(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 E-05 front power window sub switch connector terminal No. 4 and the body earth.
OK: Battery voltage

Q. Is the check result normal?

Go to Step 10.

Go to Step 8.

STEP 8. Connector check: C-315 ETACS-ECU connector


Q. Is the check result normal?

Go to Step 9.

Repair the defective connector.

STEP 9. Check of the wiring harness between the E-05 front power window sub switch connector terminal No. 4 and the C-315 ETACS-ECU connector terminal No. 8


note Prior to the wiring harness inspection, check C-113 intermediate connector, and repair if necessary.

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 10. Connector check: E-03 front power window motor (passenger’s side) connector


Q. Is the check result normal?

Go to Step 11.

Repair the defective connector.

STEP 11. Check of the wiring harness between the E-05 front power window sub switch connector terminal Nos. 5, 7 and the E-03 front power window motor (passenger’s side) connector terminal Nos. 1, 4



Q. Is the check result normal?

Go to Step 28.

Repair the wiring harness.

STEP 12. Connector check: E-10 rear power window sub switch (RH) connector


Q. Is the check result normal?

Go to Step 13.

Repair the defective connector.

STEP 13. Resistance measurement at E-10 rear power window sub switch (RH) connector


(1)Disconnect the connector, and measure at the wiring harness side.
(2)Measure the resistance between the E-10 rear power window sub switch (RH) connector terminal No. 1 and the body earth.
OK: Continuity (less than 2 Ω)

Q. Is the check result normal?

Go to Step 15.

Go to Step 14.

STEP 14. Check of the wiring harness between the E-10 rear power window sub switch (RH) connector terminal No. 1 and the body earth


note Prior to the wiring harness inspection, check D-36 intermediate connector, and repair if necessary.

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 15. Voltage measurement at E-10 rear power window sub switch (RH) connector


(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 E-10 rear power window sub switch (RH) connector terminal No. 4 and the body earth.
OK: Battery voltage

Q. Is the check result normal?

Go to Step 18.

Go to Step 16.

STEP 16. Connector check: C-311 ETACS-ECU connector


Q. Is the check result normal?

Go to Step 17.

Repair the defective connector.

STEP 17. Check of the wiring harness between the E-10 front power window sub switch (RH) connector terminal No. 4 and the C-311 ETACS-ECU connector terminal No. 12


note Prior to the wiring harness inspection, check D-36 intermediate connector, and repair if necessary.

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 18. Connector check: E-11 rear power window motor (RH) connector


Q. Is the check result normal?

Go to Step 19.

Repair the defective connector.

STEP 19. Check of the wiring harness between the E-10 rear power window sub switch (RH) connector terminal Nos. 5, 7 and the E-11rear power window motor (RH) connector terminal Nos. 4, 1



Q. Is the check result normal?

Go to Step 28.

Repair the wiring harness.

STEP 20. Connector check: E-24 rear power window sub switch (LH) connector


Q. Is the check result normal?

Go to Step 21.

Repair the defective connector.

STEP 21. Resistance measurement at E-24 rear power window sub switch (LH) connector


(1)Disconnect the connector, and measure at the wiring harness side.
(2)Measure the resistance between the E-24 rear power window sub switch (LH) connector terminal No. 1 and the body earth.
OK: Continuity (less than 2 Ω)

Q. Is the check result normal?

Go to Step 23.

Go to Step 22.

STEP 22. Check of the wiring harness between the E-24 rear power window sub switch (LH) connector terminal No. 1 and the body earth


note Prior to the wiring harness inspection, check D-23 intermediate connector, and repair if necessary.

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 23. Voltage measurement at E-24 rear power window sub switch (LH) connector


(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 E-24 rear power window sub switch (LH) connector terminal No. 4 and the body earth.
OK: Battery voltage

Q. Is the check result normal?

Go to Step 26.

Go to Step 24.

STEP 24. Connector check: C-311 ETACS-ECU connector


Q. Is the check result normal?

Go to Step 25.

Repair the defective connector.

STEP 25. Check of the wiring harness between the E-24 front power window sub switch (LH) connector terminal No. 4 and the C-310 ETACS-ECU connector terminal No. 12


note Prior to the wiring harness inspection, check D-23 intermediate connector, and repair if necessary.

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 26. Connector check: E-25 rear power window motor (LH) connector


Q. Is the check result normal?

Go to Step 27.

Repair the defective connector.

STEP 27. Check of the wiring harness between the E-24 rear power window sub switch (LH) connector terminal Nos. 5, 7 and the E-25 rear power window motor (LH) connector terminal Nos. 4, 1



Q. Is the check result normal?

Go to Step 28.

Repair the wiring harness.

STEP 28. Retest the system.


Check that each power window works by means of the power window sub switch on the corresponding door.

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 sub switch on the door of which the power window does not work.