Inspection Procedure 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 customize function.

PROBABLE 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 GROUP 54B, Inspection Procedure G-5 "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 GROUP 54A, inspection procedure "The Room Lamp does not Illuminate Normally <COLT> or <COLT CZ3>."

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 .

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 GROUP 54B, Inspection Procedure A-1 "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.

note

By using the M.U.T.-III, the number of the keyless entry hazard lamp answerback can be changed between 0 and 7 times. As an initial setting, the hazard lamps flash once when locked and twice when unlocked.

Q. Is the check result normal?

	Go to Step 6.

	Enable the keyless entry hazard lamp answerback function by using the 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 use Troubleshooting/inspection Service Points - How to Cope with Intermittent Malfunction ).

	Replace the ETACS-ECU. Then perform the variant coding (Refer to GROUP 00, Precautions Before Service - How to Perform Variant Coding ).