Inspection Procedure 3: A door cannot be locked or unlocked by central door locking system. <RH drive vehicles>

COMMENT ON TROUBLE SYMPTOM

If a door or the tailgate cannot be locked or unlocked by the central door locking system, the door lock actuator or the tailgate lock actuator may be defective.

PROBABLE CAUSES

Malfunction of the door lock actuator
Malfunction of the tailgate lock actuator
Damaged harness wires and connectors

DIAGNOSIS PROCEDURE

STEP 1. Confirm which door lock actuator is defective.

Q. Which door fails to lock correctly?

	Driver’s door : Go to Step 2.

	Front passenger’s door : Go to Step 6.

	Rear right door <COLT> : Go to Step 10.

	Rear left door <COLT> : Go to Step 14.

	Tailgate : Go to Step 18.

STEP 2. Connector check: D-19 front door lock actuator (RH) connector

Q. Is the check result normal?

Go to Step 3.

Repair the defective connector.

STEP 3. Check the front door lock actuator (RH)

Check that the front door lock actuator (RH) works normally. Refer to

<COLT> or

<COLT CZ3>.

Q. Is the check result normal?

	Go to Step 4.

	Replace the front door lock actuator (RH).

STEP 4. Connector check: B-232 ETACS-ECU connector

Q. Is the check result normal?

Go to Step 5.

Repair the defective connector.

STEP 5. Check the wiring harness from B-232 ETACS-ECU connector terminal Nos. 22 and 23 to D-19 front door lock actuator (RH) connector terminal Nos. 6 and 4.

note

Prior to the wiring harness inspection, check intermediate connector B-120 and joint connector B-25, and repair if necessary.

Check the input and output lines for open circuit.

Q. Is the check result normal?

The trouble can be an intermittent malfunction (Refer to GROUP 00, How to use Troubleshooting/inspection Service Points - How to Cope with Intermittent Malfunction

Repair the wiring harness.

STEP 6. Connector check: D-09 front door lock actuator (LH) connector

Q. Is the check result normal?

Go to Step 7.

Repair the defective connector.

STEP 7. Check the front door lock actuator (LH).

Check that the front door lock actuator (LH) works normally. Refer to

<COLT> or

<COLT CZ3>.

Q. Is the check result normal?

	Go to Step 8.

	Replace the front door lock actuator (LH).

STEP 8. Connector check: B-232 ETACS-ECU connector

Q. Is the check result normal?

Go to Step 9.

Repair the defective connector.

STEP 9. Check the wiring harness from B-232 ETACS-ECU connector terminal Nos. 22 and 23 to D-09 front door lock actuator (RH) connector terminal Nos. 6 and 4.

note

Prior to the wiring harness inspection, check intermediate connector B-122 and joint connector B-25, and repair if necessary.

Check the input and output lines for open circuit.

Q. Is the check result normal?

The trouble can be an intermittent malfunction (Refer to GROUP 00, How to use Troubleshooting/inspection Service Points - How to Cope with Intermittent Malfunction

Repair the wiring harness.

STEP 10. Connector check: D-18 rear door lock actuator (RH) connector

Q. Is the check result normal?

Go to Step 11.

Repair the defective connector.

STEP 11. Check the rear door lock actuator (RH).

Check that the rear door lock actuator (RH) is in good condition. Refer to

<COLT>.

Q. Is the check result normal?

	Go to Step 12.

	Replace the rear door lock actuator (RH).

STEP 12. Connector check: B-232 ETACS-ECU connector

Q. Is the check result normal?

Go to Step 13.

Repair the defective connector.

STEP 13. Check the wiring harness from B-232 ETACS-ECU connector terminal Nos. 22 and 23 to D-18 rear door lock actuator (RH) connector terminal Nos. 6 and 4.

note

Prior to the wiring harness inspection, check intermediate connector C-33 and joint connector B-25, and repair if necessary.

Check the input and output lines for open circuit.

Q. Is the check result normal?

The trouble can be an intermittent malfunction (Refer to GROUP 00, How to use Troubleshooting/inspection Service Points - How to Cope with Intermittent Malfunction

Repair the wiring harness.

STEP 14. Connector check: D-10 rear door lock actuator (LH) connector

Q. Is the check result normal?

Go to Step 15.

Repair the defective connector.

STEP 15. Check the rear door lock actuator (LH).

Check that the rear door lock actuator (LH) is in good condition. Refer to

<COLT>.

Q. Is the check result normal?

	Go to Step 16.

	Replace the rear door lock actuator (LH).

STEP 16. Connector check: B-232 ETACS-ECU connector

Q. Is the check result normal?

Go to Step 17.

Repair the defective connector.

STEP 17. Check the wiring harness from B-232 ETACS-ECU connector terminal Nos. 22 and 23 to D-10 rear door lock actuator (LH) connector terminal Nos. 6 and 4.

note

Prior to the wiring harness inspection, check intermediate connector C-14 and joint connector B-25, and repair if necessary.

Check the input and output lines for open circuit.

Q. Is the check result normal?

The trouble can be an intermittent malfunction (Refer to GROUP 00, How to use Troubleshooting/inspection Service Points - How to Cope with Intermittent Malfunction

Repair the wiring harness.

STEP 18. Connector check: E-07 tailgate lock actuator connector

Q. Is the check result normal?

Go to Step 19.

Repair the defective connector.

STEP 19. Check the tailgate lock actuator.

Check that the tailgate lock actuator is in good condition. Refer to

<COLT> or

<COLT CZ3.

Q. Is the check result normal?

	Go to Step 20.

	Replace the tailgate lock actuator.

STEP 20. Connector check: B-232 ETACS-ECU connector

Q. Is the check result normal?

Go to Step 21.

Repair the defective connector.

STEP 21. Check the wiring harness from B-232 ETACS-ECU connector terminal Nos. 22 and 23 to E-07 tailgate lock actuator connector terminal Nos. 2 and 1.

note

Prior to the wiring harness inspection, check intermediate connector E-11, and repair if necessary.

Check the input and output lines for open circuit.

Q. Is the check result normal?

The trouble can be an intermittent malfunction (Refer to GROUP 00, How to use Troubleshooting/inspection Service Points - How to Cope with Intermittent Malfunction

Repair the wiring harness.