INSPECTION PROCEDURE B-1: The tailgate lock release handle signal is not received.

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

Input signal from the tailgate lock release handle is used to operate the central door locking function. If the signal is abnormal, the central door locking function will not work normally.

PROBABLE CAUSES

Malfunction of the tailgate lock release handle
Malfunction of ETACS-ECU
Damaged wiring harness and connectors

DIAGNOSTIC PROCEDURE

STEP 1. Tailgate lock release handle check.

Check that the tailgate lock release handle is normal (Refer to

<Vehicles without electric tailgate>,

<Vehicles with electric tailgate>).

Q. Is the check result normal?

Go to Step 2.

Replace the tailgate lock release handle.

STEP 2. Resistance measurement at tailgate lock release handle connector (earth line terminal).

(1)Disconnect the connector, and measure at the wiring harness side.

(2)Measure the resistance between the tailgate lock release handle connector (earth line terminal) and body earth.
OK: Continuity exists (2 or less)

Q. Is the check result normal?

Go to Step 4.

Go to Step 3.

STEP 3. Check of open circuit in earth line between tailgate lock release handle connector and body earth.

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

Repair the connector(s) or wiring harness.

STEP 4. Check of open circuit in GTOP line between ETACS-ECU connector and tailgate lock release handle connector.

Q. Is the check result normal?

Go to Step 5.

Repair the connector(s) or wiring harness.

STEP 5. M.U.T.-III data list

Check the ETACS-ECU signals related to the tailgate.

Tailgate lock release handle: from OFF to ON

Item No.	Item name	Normal condition
230	Gate opener	from OFF to ON

OK: Normal condition is displayed.

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 ETACS-ECU.