Inspection Procedure 13: Keyless entry hazard answerback function or the room lamp answerback function does not work normally.

caution

Before replacing the ECU, ensure that the power supply circuit, the earth circuit and the communication circuit are normal.

OPERATION

When the keyless entry function is used, the keyless entry hazard answerback function or room lamp answerback function operate as set by ETACS customisation function (If the flashing count is set to 0 with a customisation function, no answerback function is performed).

PROBABLE CAUSES

Function setting error or no setting with a customisation
Malfunction of the turn signal lamp
Malfunction of the room lamp
Malfunction of ETACS-ECU

DIAGNOSIS PROCEDURE

STEP 1. Check the hazard warning lamp

Check that the hazard warning lamp 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 room lamps operation

Check that the room lamps illuminate normally.

Q. Is the check result normal?

Go to Step 3.

Refer to GROUP 54A, The front room lamp does not illuminate normally

STEP 3. Check the keyless entry system operation

Check that the keyless entry system operation normally.

Q. Is the check result normal?

Go to Step 4.

Refer to Inspection Procedure 9: "Keyless entry system does not work

STEP 4. Check the customisation

Check that any one of the followings other than "Lock: 0, Unlock: 0" is set for "Hazard answerback" with a customisation function.

Lock:1, Unlock:2
Lock:1, Unlock:0
Lock:0, Unlock:2
Lock:2, Unlock:1
Lock:0, Unlock:1
Lock:2, Unlock:0

note

If "Lock: 0" or "Unlock: 0" is selected, no answerback function is performed on locking or unlocking.

Q. Is it set to other than "Lock: 0, Unlock: 0"?

Go to Step 5.

Set "Hazard answerback" to any one other than "Lock: 0, Unlock: 0" with a customisation function (Refer to

STEP 5. M.U.T.-III diagnosis code

Check if any diagnosis code is set to the KOS-ECU.

Q. Is the diagnosis code set?

Refer to

Go to Step 6.

STEP 6. Check of the troubles

Check that the hazard answerback and room lamp answerback functions of the keyless entry operate.

Q. Is the check result normal?

Intermittent malfunction is suspected (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunction

Replace ETACS-ECU. After the replacement, perform the coding.