INSPECTION PROCEDURE A-2: Central door locking system does not operate even when door lock switch of power window main switch operated.


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

OPERATION



COMMENTS ON TROUBLE SYMPTOM



PROBABLE CAUSES



  • Malfunction of the door lock switch (built in the power window main switch)
  • Malfunction of ETACS-ECU
  • Damaged wiring harness and connectors

DIAGNOSTIC PROCEDURE

STEP 1. Central door locking system operation check
Check that the central door locking system works normally.

Q. Is the check result normal?
Go to Step 2.
Refer to Inspection Procedure 1 "Central door locking system does not work at all ."

STEP 2. Connector check: F-13 power window main switch connector

Q. Is the check result normal?
Go to Step 3.
Repair the defective connector.

STEP 3. Central door lock switch check (built in the power window main switch)
Check that the central door lock switch works normally (Refer to Central Door Lock Switch Check ).

Q. Is the check result normal?
Go to Step 4.
Replace the power window main switch.

STEP 4. Connector check: C-411, C-415 ETACS-ECU connector

Q. Is the check result normal?
Go to Step 5.
Repair the defective connector.

STEP 5. Check of the wiring harness between the C-411 ETACS-ECU connector terminal No. 2 and the F-13 power window main switch connector terminal No. 14, the C-415 ETACS-ECU connector terminal No. 15 and the F-13 power window main switch connector terminal No. 13
note Prior to the wiring harness inspection, check the C-225 <LH drive vehicles>, C-212 <RH drive vehicles> intermediate connector and repair if necessary.

  • Check the power supply line for open or short circuit.

Q. Is the check result normal?
YES : Go to Step 6.
Repair the wiring harness.

STEP 6. Retest the system.
Check that the central door locking system works normally.

Q. Is the check result normal?
YES : No action is necessary and testing is complete.
Replace ETACS-ECU.