Inspection Procedure 6: Keyless entry system-linked fold/unfold function does not work normally.

caution

Whenever the ECU is replaced, ensure that the input and output signal circuits 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 GROUP 54A, Immobilizer System - How to Register Key ID )

OPERATION

The ETACS-ECU operates this function in accordance with the keyless entry transmitter input signals.

COMMENTS ON TROUBLE SYMPTOM

If this function does not work normally, keyless entry transmitter input signal circuit or the ETACS-ECU may be defective. Also, with the customise function, the door mirrors may be set other than to the keyless entry interlock fold/unfold function.

PROBABLE CAUSES

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

DIAGNOSTIC PROCEDURE

STEP 1. Check the ETACS customise function.

Use the ETACS customise function to confirm that "AUTO FOLD MIRROR" is set to "KEYLESS OPEN OR CLOSE".

Q. Is the check result normal?

	Go to Step 2.

	Use the ETACS customise function to set "AUTO FOLD MIRROR" to "KEYLESS OPEN OR CLOSE" (Refer to ).

STEP 2. Check the keyless entry operation.

Check that the keyless entry system works normally.

Q. Is the check result normal?

	Go to Step 3.

	Refer to GROUP 42B - KOS, Inspection Procedure 11 "Keyless entry function does not work." .

STEP 3. Retest the system.

Check that the keyless entry interlock fold/unfold function for the door mirrors 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.