Inspection Procedure 1: The hazard warning lamps do not illuminate.


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 hazard warning lamp switch
  • Malfunction of the ETACS-ECU
  • Damaged harness wires and connectors

DIAGNOSIS PROCEDURE


STEP 1. Check that the turn-signal lamps operate.



Q. Is the check result normal?





STEP 2. M.U.T.-III diagnosis code.



Q. Is the diagnosis code set?





STEP 3. Check the power supply circuit.




  • Lamp reminder function
  • Central door locking system

Q. Is the check result normal?





STEP 4. M.U.T.-III data list




  • Operate the hazard warning lamp switch.
Item No.
 Item name
 Normal condition
26
 Hazard warning lamp switch
 OFF to ON (only when switch is operated)
OK: Normal condition is displayed.

Q. Is the check result normal?





STEP 5. Retest the system.



Q. Is the check result normal?