Trouble Diagnosis Summary of Power Door Lock

KEY REMINDER DOOR SYSTEM DOES NOT OPERATE PROPERLY

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 to
UNLOCK once driver's door is unlocked; turning to UNLOCK again within five seconds will unlock all doors.
If 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 unlocks them. This is the KEY REMINDER DOOR SYSTEM.

Possible Cause
- Door switch
- Key switch
- Door lock actuator
- Circuit open or short
- Smart entrance control unit

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 switch input signal: Use CONSULT-II DATA MONITOR in DOOR LOCK to confirm that DOOR SW-ALL indicates ON when any doors are open. Confirm OFF when all doors are closed.
a. Check circuits between each door switch and smart entrance control unit: Continuity/No shorts to ground.
b. Door switch component test: Continuity through the switch in the released position (door open), and no continuity through the switch in pressed position (door closed).
c. Check ground circuit between each door switch and ground: Continuity.
4. Check key switch input signal: Use CONSULT-II DATA MONITOR in DOOR LOCK to confirm that KEY ON SW indicates ON when key is inserted to ignition key cylinder. Confirm OFF when key is removed from ignition key cylinder.
a. Check power supply to key switch.
b. Check circuit between key switch and smart entrance control unit: Continuity/No shorts to ground.
c. Key switch component test: Continuity through the switch with key inserted, no continuity with key removed.
5. 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 door 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.
6. If door lock actuator cannot operate properly in step 5, 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 from RH and rear
a. Replace smart entrance control unit.




7. Check door lock actuator:
Apply 12 V direct current to door lock actuator and check operation. See illustration.
8. Check circuit between smart entrance control unit and door lock actuator.

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.
If 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 look actuator front RH and rear
a. Replace smart entrance control unit.




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

POWER DOOR LOCK DOES NOT OPERATE WITH LOCK/UNLOCK SWITCH (LH AND RH) ON DOOR TRIM

System Description
The lock/unlock switch (LH and RH) on door trim can lock and unlock all doors.

Possible Cause
- Lock/unlock switch
- 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 and unlock switch input signal circuit: Use CONSULT-II DATA MONITOR in DOOR LOCK to confirm that LOCK SW DR/AS indicates ON when lock/unlock switch is turned to LOCK. Confirm that LOCK SW DR/AS indicates ON when lock/unlock switch is turned to UNLOCK.
a. Check circuits between smart entrance control unit and door lock/unlock switch: Continuity/No shorts to ground.
b. Check ground circuit between door lock/unlock switch and ground: Continuity.
c. Door lock/unlock switch component test:
Check continuity between each door lock/unlock switch terminals. See illustration.




- Power window main switch (Door lock/unlock switch LH).




- Door lock/unlock switch RH

POWER DOOR LOCK DOES NOT OPERATE WITH FRONT DOOR LH KEY CYLINDER OPERATION

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 five seconds will unlock all doors.

Possible Cause
- Door key cylinder switch
- Circuit open or short

Diagnostic Repair Procedure (for confirmed incidents)
1. Check power supply to smart entrance control unit.
2. Check ground circuit for the smart entrance control unit.




3. Check front door key cylinder switch input signal: Use CONSULT-II DATA MONITOR in DOOR LOCK to confirm that KEY CYL LK-SW indicates ON when key inserted in front key cylinder is turned to LOCK. Confirm that KEY CYL UN-SW indicates ON when key inserted in front key cylinder is turned to UNLOCK.
a. Check circuit between smart entrance control unit and front door key cylinder: Continuity/No shorts to ground.
b. Check between front door key cylinder switch and ground: Continuity.
c. Front door key cylinder switch component test:
Check continuity between front door key cylinder switch terminals. See illustration.