Inspection Procedure 14: The comfort flashing 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.
  • When the ETACS-ECU of vehicles without KOS is replaced, the encrypted code of the ignition key needs to be registered to the ETACS-ECU. (If the encrypted code is not registered, the engine cannot be started. Register the encrypted code as described in Immobilizer System - How to Register Key ID .)

COMMENTS ON TROUBLE SYMPTOM


If the comfort flashing function does not work normally, the turn-signal lamp switch input circuit(s) and ETACS-ECU may have a problem.

PROBABLE CAUSES



DIAGNOSIS PROCEDURE


STEP 1. ETACS-ECU customise function check


Use the ETACS-ECU customise function to check that the "Comfort flasher" is set to "Enable."

Q. Is the check result normal?

Go to Step 2.

Use the ETACS-ECU customise function to set the "Comfort flasher" to "Enable" (Refer to ).

STEP 2. M.U.T.-III diagnosis code


Check if diagnosis code is set to the ETACS-ECU.

Q. Is the diagnosis code set?

Troubleshoot the ETACS-ECU. Refer to .

Go to Step 3.

STEP 3. Check that the turn-signal lamps operate.


Check that the turn-signal lamps work normally when the ignition switch is in the ON position.

Q. Is the check result normal?

Go to Step 4.

Refer to Inspection Procedure 10 "None of the turn-signal lamps illuminate" .

STEP 4. Retest the system


Check that the comfort flashing 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.