INSPECTION PROCEDURE C-3: Hazard lamp answerback of dead lock system 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 works normally, the ETACS-ECU may be defective.

PROBABLE CAUSES



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 GROUP 54A, Inspection Procedure 1 "The hazard warning lamps do not illuminate ".

STEP 2. Check the operation of the dead lock system.


If the dead lock system is operated, check that the doors can be dead locked normally.

Q. Is the check result normal?

Go to Step 3.

Refer to troubleshooting .

STEP 3. 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 4.

Refer to GROUP 54A, Malfunction of ETACS-ECU power supply circuit .

STEP 4. Retest the system.


Check that the dead lock hazard lamp answerback function works normally.

Q. Is the check result normal?

The trouble can be an intermittent malfunction (Refer to GROUP 00, How to use Troubleshooting/inspection Service Points - How to Cope with Intermittent Malfunction ).

Replace the ETACS-ECU.