Inspection Procedure 4: The Headlamp Automatic Levelling Warning is not Displayed.


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 headlamp automatic levelling ECU
  • Malfunction of combination meter
  • Damaged harness wires and connectors

DIAGNOSIS PROCEDURE


STEP 1. Check of automatic levelling



Q. Is the check result normal?





STEP 2. M.U.T.-III other system actuator test



Q. Is the check result normal?





STEP 3. Connector check: C-03 combination meter connector, C-112 headlamp automatic levelling ECU connector


Q. Is the check result normal?





STEP 4. Wiring harness check between the C-03 combination meter connector terminal No. 6 and the C-112 headlamp automatic levelling ECU connector terminal No. 8


note Prior to the wiring harness inspection, check intermediate connector C-38, and repair if necessary.

Q. Is the check result normal?





STEP 5. Retest the system



Q. Is the check result normal?