How to check the power of a door lock actuator?
Unplug the door lock actuator electrical connector. Then use your test light or digital meter to check for power and ground at the connector when you operate the lock/unlock switch. You should see the voltage polarity toggle with each switch activation.
Where is the actuator located on a car door?
Late model vehicles have the actuator built into the door latch assembly, forcing you to replace the entire latch. Older vehicles usually have a separate actuator. The actuator can be located away from the latch and operate the latch via linkage, or it can be attached to the latch by plastic clips or screws.
How to diagnose power door locks dont work properly?
If all of the door locks are inoperative, start your diagnosis at the fuse box. Inspect the fuse that protects the door lock circuit to ensure it is not blown. Consult the fuse box placard or your owners manual for fuse designations and ratings.
How do you remove a car door lock?
1. Remove Door Panel If the car has electric windows turn the ignition key to the on position and raise the window completely. Then turn the ignition off and remove the door panel. This will allow you to gain access to the rear of the door lock for removal. 2. Raise the Window Up
Unplug the door lock actuator electrical connector. Then use your test light or digital meter to check for power and ground at the connector when you operate the lock/unlock switch. You should see the voltage polarity toggle with each switch activation.
What to do if your door lock is not working?
If only one door lock actuator isn’t working, chances are it’s not the control module (there are exceptions however). If you’re having problems with inconsistent door lock operation and your actuators are controlled by a module, start by pulling the fuse for that module and then re-installing it a few minutes later.
Late model vehicles have the actuator built into the door latch assembly, forcing you to replace the entire latch. Older vehicles usually have a separate actuator. The actuator can be located away from the latch and operate the latch via linkage, or it can be attached to the latch by plastic clips or screws.
What causes a door lock controller to lock?
In some cases the controller interprets the lack of current spike as a sign of a problem, causing the door lock actuator to lock and then immediately unlock. The actuator/controller can do this consistently or erratically. If you notice the door locks behaving erratically, don’t automatically assume you’ve got a bad controller.