INSPECTION PROCEDURE P-13: The driver’s door lock actuator switch 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 driver’s door lock actuator is used to operate the functions below. If the signal is abnormal, these functions will not work normally.

  • Central door locking
  • Interior lamps

POSSIBLE CAUSES

  • Malfunction of the front door lock actuator (RH)
  • Malfunction of the ETACS-ECU
  • Damaged harness wires and connectors

DIAGNOSIS PROCEDURE

Step 1. Connector check: F-17 front door lock actuator (RH) connector

Q. Is the check result normal?

Go to Step 2.

Repair the defective connector.

Step 2. Check the front door lock actuator (RH).
Refer to GROUP 42 - Door .

Q. Is the check result normal?
Go to Step 3.
Replace the front door lock actuator (RH).

Step 3. Resistance measurement at the F-17 front door lock actuator (RH) connector

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

(2)Resistance between F-17 front door lock actuator (RH) connector terminal No.3 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 F-17 front door lock actuator (RH) connector terminal No.3 to body earth


note Prior to the wiring harness inspection, check intermediate connector C-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-220 ETACS-ECU connector

Q. Is the check result normal?

Go to Step 6.

Repair the defective connector.

Step 6. Check the wiring harness from F-17 front door lock actuator (RH) connector terminal No.1 to C-220 ETACS-ECU connector terminal No.36.



note Prior to the wiring harness inspection, check intermediate connector C-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. ETACS switch data by using the SWS monitor
Check the input signal from the driver’s door lock actuator switch.

  • Driver’s door lock actuator switch: LOCK → UNLOCK
Item No.
 Item name
 Normal conditions
Item 21
 DR DOR LCK SW
 ON → OFF
OK: Normal conditions are displayed for all the items.

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.