Inspection Procedure E-2: Keyless entry hazard lamp answerback function or the room lamp answerback function does not work normally.


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

COMMENTS ON TROUBLE SYMPTOM
If the hazard warning lamp and the room lamp work normally, the ETACS-ECU may be defective.
Alternatively, it is possible that the keyless entry hazard lamp answerback function was disabled by the adjustment function.

POSSIBLE CAUSES

  • Defective turn-signal lamp
  • Malfunction of the room lamp
  • Malfunction of the ETACS-ECU
  • Damaged harness wires and connectors

DIAGNOSIS PROCEDURE

Step 1. Check the operation of the hazard warning lamp.
Check that the hazard warning lamps illuminate normally.

Q. Is the check result normal?
Go to Step 2.
Refer to Inspection Procedure L-2 "The hazard warning lamps do not illuminate ".

Step 2. Check the operation of the room lamps.
Check that the room lamps illuminate normally.

Q. Is the check result normal?
Go to Step 3.
Refer to Inspection Procedure N-2 "The room lamp does not illuminate normally ."

Step 3. Check the operation of the keyless entry system.
If the keyless entry system is operated, check that the doors can be locked and unlocked normally.

Q. Is the check result normal?
Go to Step 4.
Refer to Inspection Procedure E-1 "Keyless entry system does not work ."

Step 4. Check the power supply circuit.
When the ignition switch is turned to the LOCK (OFF) position, check if the hazard warning lamps illuminate.

Q. Is the check result normal?
Go to Step 5.
Refer to Inspection Procedure A-2 "When the ignition switch is at the LOCK (OFF) position, the functions do not work normally. Check the battery power supply circuit to the ETACS-ECU ."

Step 5. Check the customize function.
Check that the keyless entry hazard lamp answerback function has been enabled by using the customize function.
caution The SWS monitor must be used in order to confirm and change that setting. Use the SWS monitor to confirm and/or change the customized function.

Q. Is the check result normal?
Go to Step 6.
Enable the keyless entry hazard lamp answerback function by using the adjustment function. (Refer to GROUP 54E - Customize function ).

Step 6. Retest the system.
Check that the keyless entry hazard lamp answerback function or the room lamp answerback function work normally.

Q. Is the check result normal?
The trouble can be an intermittent malfunction (Refer to GROUP 00 - How to Cope with Intermittent Malfunction ).
Replace the ETACS-ECU.