Specific Door Lock Actuator Does Not Operate

SPECIFIC DOOR LOCK ACTUATOR DOES NOT OPERATE

System Description
The lock/unlock switch (LH and RH) on door trim can lock and unlock all doors.
If the door key cylinder switch on driver's door is turned to LOCK, all doors will be locked. When turning
UNLOCK once driver's door is unlocked; turning to UNLOCK again within 5 seconds will unlock all doors. It ignition key is in ignition key cylinder and one or more doors are open, setting the lock/unlock switch to "LOCK" locks the doors once but then immediately unlock them. This is the KEY REMINDER DOOR SYSTEM.

Possible Cause
- Door lock actuator
- Circuit open or short

Diagnostic Repair Procedure (for confirmed incidents)
1. Check power supply to smart entrance control unit.
2. Check ground circuit for smart entrance control unit.
3. Check door lock actuator operation: Perform CONSULT-II ACTIVE TEST in DOOR LOCK. Confirm that all doors are locked (motor is operated) when ALL D/LK MTR is ON, driver's is unlocked (motor is operated) when DR D/UN MTR is ON and other doors are unlocked (motor is operated) when NON DR D/UN is ON.
4. If door lock actuator cannot operate properly in step 3, check smart entrance control unit output to door lock actuators:
Check voltage for door lock actuator. See illustration.




- Door lock actuator front LH




- Door lock actuator front RH and rear

a. Replace smart entrance control unit.
5. Check door lock actuator:
Apply 12 V direct current to door lock actuator and check operation. See illustration.





6. Check circuit between smart entrance control unit and door lock actuator.