INSPECTION PROCEDURE P-16: The tailgate lock release handle signal is not received.


caution Whenever the ECU is replaced, ensure that the input signal circuit is normal.


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.

POSSIBLE CAUSES

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

DIAGNOSTIC PROCEDURE

Step 1. Connector check: G-06 Tailgate lock release handle connector

Q. Is the check result normal?

Go to Step 2.

Repair the defective connector.

Step 2. Check the tailgate lock release handle.
Refer to GROUP 42 - Tailgate .

Q. Is the check result normal?
Go to Step 3.
Replace the tailgate lock release handle.

Step 3. Measure the resistance at tailgate lock release handle connector G-06.

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

(2)Resistance between G-06 tailgate lock release handle connector No.2 and body earth.
OK: 2 Ω or less

Q. Is the check result normal?

Go to Step 5.

Go to Step 4.

Step 4. Check the wiring harness between tailgate lock release handle connector G-06 terminal No.2 and body earth.


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

  • 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 5. Connector check: C-221 ETACS-ECU connector


Q. Is the check result normal?

Go to Step 6.

Repair the defective connector.

Step 6. Check the wiring harness between ETACS-ECU connector C-221 terminal No.62 and tailgate lock release handle connector G-06 terminal No.1.






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

  • Check the input line for open circuit.

Q. Is the check result normal?

Go to Step 7.

Repair the wiring harness.

Step 7. Retest the system.
Check that the tail gate lock release handle switch signal is received 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.