Inspection Procedure A-7: Electric tailgate automatic operation does not work normally by the operation of keyless operation key (for both open and close operations).


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

COMMENTS ON TROUBLE SYMPTOM


The keyless operation key or the electric tailgate control unit may be defective.

PROBABLE CAUSES



DIAGNOSIS PROCEDURE


STEP 1. Keyless entry system operation check


Check that the door lock/unlock is performed when the keyless operation key is operated.

Q. Is the check result normal?

Go to Step 2.

Refer to GROUP 42B - Trouble Symptom Chart .

STEP 2. M.U.T.-III CAN bus diagnostics


Use M.U.T.-III to diagnose the CAN bus lines.

Q. Is the CAN bus normal?

Go to Step 3.

Repair the CAN bus line. (Refer to GROUP 54C - CAN Bus Line Trouble Symptom Chart .)

STEP 3. M.U.T.-III diagnosis code


Check that ETACS-ECU sets a diagnosis code.

Q. Is the diagnosis code set?

Refer to GROUP 54A - Diagnosis Code Chart .

Go to Step 4.

STEP 4: System retest using the normal keyless operation key


(1)Register the keyless operation key which operates the electric tailgate normally.
(2)Check whether the electric tailgate works normally.

Q. Is the check result normal?

Replace the keyless operation key.

Go to Step 5.

STEP 5. System retest


Check whether the electric tailgate 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 electric tailgate control unit.