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



PROBABLE CAUSES



  • Malfunction of the power window sub switch
  • Malfunction of the power window motor
  • Damaged wiring harness and connectors

DIAGNOSTIC PROCEDURE


STEP 1. Check the power window main switch.



Q. Is the check result normal?





STEP 2. M.U.T.-III diagnosis code



Q. Is the diagnosis code set?





STEP 3. Determine a trouble spot.


Q. Which power window does not work?







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


Q. Is the check result normal?





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?





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.

  • Check the earth wires for open circuit.

Q. Is the check result normal?





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?





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


Q. Is the check result normal?





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.

  • Check the power supply line for open circuit.

Q. Is the check result normal?





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


Q. Is the check result normal?





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



  • Check the input/output line for open circuit.

Q. Is the check result normal?





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


Q. Is the check result normal?





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?





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.

  • Check the earth wires for open circuit.

Q. Is the check result normal?





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?





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


Q. Is the check result normal?





STEP 17. Check of the wiring harness between the E-10 rear 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.

  • Check the power supply line for open circuit.

Q. Is the check result normal?





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


Q. Is the check result normal?





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



  • Check the input/output line for open circuit.

Q. Is the check result normal?





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


Q. Is the check result normal?





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?





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.

  • Check the earth wires for open circuit.

Q. Is the check result normal?





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?





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


Q. Is the check result normal?





STEP 25. Check of the wiring harness between the E-24 rear power window sub switch (LH) connector terminal No. 4 and the C-311 ETACS-ECU connector terminal No. 12


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

  • Check the power supply line for open circuit.

Q. Is the check result normal?





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


Q. Is the check result normal?





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



  • Check the input/output line for open circuit.

Q. Is the check result normal?





STEP 28. Retest the system.



Q. Is the check result normal?