Inspection Procedure 10: The open switch of the tailgate lock release handle does not perform the unlocking operation.


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

PROBABLE CAUSES



  • Malfunction of the outside transmission antenna assembly (tailgate)
  • Malfunction of the tailgate lock release handle (open switch)
  • Damaged wiring harness and connectors
  • Malfunction of the KOS-ECU

DIAGNOSIS PROCEDURE


STEP 1. M.U.T.-III diagnosis code



Q. Is the diagnosis code set?





STEP 2. Tailgate lock release handle (open switch) check



Q. Is the check result normal?





STEP 3. Check of short to power supply, short to earth, and open circuit in GTOP line between the KOS-ECU connector and the tailgate lock release handle connector.


note Before the wiring harness check, check the intermediate connector, and repair if necessary.

Q. Is the check result normal?





STEP 4. KOS communication test



Q. Is the check result normal?





STEP 5. Check of the troubles



Q. Is the check result normal?