Inspection Procedure 4: Multimode keyless entry system function does not work at all <Vehicles with electric retractable remote controlled door mirrors>.

caution

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

COMMENTS ON TROUBLE SYMPTOM

If the electric-folding door mirrors work normally, ETACS-ECU may be faulty. Also, the door mirror operation setting is configured for other than the folding/unfolding interlocked with the keyless entry operation, using the customisation function.

PROBABLE CAUSES

Malfunction of keyless entry transmitter
Malfunction of ETACS-ECU
Damaged wiring harness and connectors

DIAGNOSIS PROCEDURE

STEP 1. Confirm the transmitter.

Check that the keyless entry system works normally.

Q. Is the check result normal?

	Go to Step 2.

	Refer to trouble symptom chart .

STEP 2. Check the operation of the electric-folding door mirror.

Check that the electric folding door mirrors work normally.

Q. Is the check result normal?

	Go to Step 3.

	Refer to GROUP 51 - Troubleshooting .

STEP 3. Check the customisation function.

Use the customisation function to check that the "Multi mode" has been set to the following, not "Disable."

D-spec

Q. Is the check result normal?

	Go to Step 4.

	Use the customisation function to set the "Multi mode" to the above, not "Disable" (Refer to ).

STEP 4. Check of the troubles

Check that the multimode keyless entry system works normally.

Q. Is the check result normal?

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

	Replace the ETACS-ECU.