Inspection Procedure 3: The high-beam and low-beam headlamps do not illuminate when the passing switch is operated.


caution Whenever the ECU is replaced, ensure that the input and output signal circuits are normal.

COMMENTS ON TROUBLE SYMPTOM



PROBABLE CAUSES



  • Malfunction of the column switch
  • Malfunction of the ETACS-ECU
  • Damaged harness wires and connectors

DIAGNOSIS PROCEDURE


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



Q. Is the diagnosis code set?





STEP 2. Check that the headlamps operate.



Q. Is the check result normal?





STEP 3. Retest the system.



Q. Is the check result normal?