Inspection Procedure B-3: Tailgate lock release handle signal is not received.


caution Before replacing the ECU, ensure that the input and output signal circuits are normal.

COMMENTS ON TROUBLE SYMPTOM


The wiring harness or its connector(s) between the tailgate lock release handle and the electric tailgate control unit, the tailgate lock release handle itself or the electric tailgate control unit itself may be defective.

PROBABLE CAUSES



DIAGNOSIS PROCEDURE


STEP 1. Tailgate lock release handle check.


Check the tailgate lock release handle (refer to).

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 tailgate lock release handle connector (earth line terminal) and body earth.
OK: Continuity exists (2 Ω 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 GOPN line between electric tailgate control unit 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. System retest


Check that the tailgate lock release handle signal is received 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 electric tailgate control unit.