INSPECTION PROCEDURE A-5: Ignition "LOCK (OFF)" position-linked door unlock function does not operate.


caution Before replacing the ECU, ensure that the input and output signal circuits are normal.

COMMENTS ON TROUBLE SYMPTOM



PROBABLE CAUSES



  • Malfunction of CAN bus line
  • Malfunction of ETACS-ECU
  • Malfunction of ignition switch
  • Damaged wiring harness and connectors

DIAGNOSIS PROCEDURE


STEP 1. Checking central door unlocking operation



Q. Is the check result normal?





STEP 2. Check the customisation function.



Q. Is the check result normal?





STEP 3. M.U.T.-III CAN bus diagnostics



Q. Is the CAN bus normal?





STEP 4. Check the ignition switch.



Q. Is the check result normal?





STEP 5. Retest the system.



Q. Is the check result normal?