Inspection Procedure 9: The Turn-signal Indicator Lamps 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 turn-signal indicator lamps does not illuminate normally, connector(s), wiring harness in the CAN bus lines, the ETACS-ECU or the combination meter may be defective.

PROBABLE CAUSES

Malfunction of the CAN bus line
Malfunction of the combination meter
Malfunction of the ETACS-ECU
Damaged harness wires and connectors

DIAGNOSIS PROCEDURE

STEP 1. Check that the hazard warning lamps operate.

Check that the hazard warning lamps illuminate normally.

Q. Is the headlamps in good condition?

Go to Step 2.

Refer to Hazard Warning Lamp - Inspection Procedure 1 "The hazard warning lamps do not illuminate normally

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 54D - Troubleshooting

STEP 3. M.U.T.-III actuator test

Perform the actuator test for the combination meter, and check that the turn-signal indicator illuminates (Refer to Combination Meter - Troubleshooting

Q. Is the check result normal?

Replace the ETACS-ECU.

Replace the combination meter.