Inspection Procedure A-5: The high-beam indicator lamp does not illuminate.


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

COMMENTS ON TROUBLE SYMPTOM


If the high-beam indicator lamp does not illuminate normally, the harness in the CAN bus lines, connector(s), ETACS-ECU, or combination meter may have a problem.

PROBABLE CAUSES



DIAGNOSIS PROCEDURE


STEP 1. Check the headlamp.


Check that the headlamps illuminate and go out normally when the lighting switch is operated.

Q. Is the check result normal?

Go to Step 2.

Repair the headlamps.

STEP 2. M.U.T.-III CAN bus diagnostics


Use the M.U.T.-III to diagnose the CAN bus lines.

Q. Is the check result normal?

Go to Step 3.

Repair the CAN bus line (Refer to GROUP 54C - Troubleshooting ).

STEP 3. M.U.T.-III diagnosis code.


When the ignition switch is turned to the "LOCK" (OFF) position, check that the ETACS-ECU does not set the diagnosis code.

Q. Is the diagnosis code set?

Refer to diagnosis code chart .

Go to Step 4.

STEP 4. Check by M.U.T.-III "Special Function"


Using M.U.T.-III, select "Test" from the special function of the combination meter. Execute the following item to check the indicator.

Q. Is the check result normal?

Replace the ETACS-ECU (Refer to ).

Replace the combination meter (Refer to ).