INSPECTION PROCEDURE C-7: The tailgate cannot be opened or closed.

COMMENT ON TROUBLE SYMPTOM

If the tailgate can not be locked or unlocked by the central door locking system, the tailgate lock actuator or the ETACS-ECU may be defective.

PROBABLE CAUSES

Malfunction of the tailgate lock actuator
Malfunction of the ETACS-ECU
Damaged harness wires and connectors

DIAGNOSIS PROCEDURE

Step 1. Check that the central door locking system and the keyless entry system operate.

Check that the doors (excluding the tailgate) are locked and unlocked normally when the central door locking and keyless entry systems are operated.

Q. Is the check result normal?

	Go to Step 2.

	<If the central door locking system does not work normally> Refer to Inspection Procedure C-1 "Central door locking system does not work ." <If the keyless entry system does not work normally> Refer to Inspection Procedure E-1 "Keyless entry system does not work ."

Step 2. Pulse check

Check the input signals which are related to the tailgate opening and closing.

System switch	Check condition
Ignition switch (IG1)	When turned from ACC to ON
Tailgate lock release handle	When turned from OFF to ON

OK: The M.U.T.-III sounds or the voltmeter needle fluctuates.

Q. Is the check result normal?

	All the signals are received normally. : Go to Step 3.

	The ignition switch (IG1) signal is not received. : Refer to Inspection Procedure P-2 "The ignition switch (IG1) signal is not received ."

	The Tailgate lock release handle signal is not received. : Refer to Inspection Procedure P-16 "The Tailgate lock release handle signal is not received ."

Step 3. Connector check: G-17 tailgate lock actuator connector

Q. Is the check result normal?

Go to Step 4.

Repair the defective connector.

Step 4. Check the tailgate lock actuator.

Check that the tailgate lock actuator is in good condition. Refer to GROUP 42 - Tailgate

Q. Is the check result normal?

	Go to Step 5.

	Replace the tailgate lock actuator.

Step 5. Resistance measurement at the G-17 tailgate lock actuator connector.

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

(2)Resistance between G-17 tailgate lock actuator connector terminal No.2 and body earth
OK: 2 Ω or less

Q. Is the check result normal?

Go to Step 7.

Go to Step 6.

Step 6. Check the wiring harness between G-17 tailgate lock actuator connector terminal No.2 to the body earth.

Check the earth wires for open circuit.

Q. Is the check result normal?

The trouble can be an intermittent malfunction (Refer to GROUP 00 - How to Cope with Intermittent Malfunction

Repair the wiring harness.

Step 7. Connector check: C-221 ETACS-ECU connector

Q. Is the check result normal?

Go to Step 8.

Repair the defective connector.

Step 8. Check the wiring harness from C-221 ETACS-ECU connector terminal No.61 to G-17 tailgate lock actuator connector terminal No.1.

note

Prior to the wiring harness inspection, check intermediate connector C-16, G-14, and repair if necessary.

Check the input and output lines for open circuit.

Q. Is the check result normal?

Go to Step 9.

Repair the wiring harness.

Step 9. Retest the system.

Check that the tailgate lock works normally.

Q. Is the check result normal?

	The trouble can be an intermittent malfunction (Refer to GROUP 00 - How to Cope with Intermittent Malfunction ).

	Replace the ETACS-ECU.