The switch provides power to the door lock solenoids.
Power door lock switch fuse.
Door lock systems operate the actuator by toggling positive negative voltage to the actuator.
Replace any blown fuses and check if the device works.
An inoperative power door lock can be caused by the switch solenoid wiring problem or mechanical problem within the linkage of the affected door.
You should see the voltage polarity toggle with each switch activation.
Power door locks are prone to failures due to electrical interruptions corrosion broken wires or blown fuses.
Unplug the door lock actuator electrical connector.
There are three primary components of the power door lock system that can fail resulting in a useless power door lock.
When the relay fails or has issues it can cause problems with the operation of the door locks.
The door lock relay is the relay responsible for sending power to the door lock actuators so that they can lock and unlock the vehicle.
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When the relay fails or has issues it can cause problems.
The door lock relay is the relay responsible for sending power to the door lock actuators so that they can lock and unlock the vehicle.
A fuse is a low resistance resistor that creates overcurrent protection.
Determine from the chart or the diagram on the fuse box lid which fuse or fuses control that device.
Then use your test light or digital meter to check for power and ground at the connector when you operate the lock unlock switch.
Diagnosis if all of the door locks are inoperative start your diagnosis at the fuse box.
Inspect the fuse that.
Find out why a lack of any movement in door locks is most likely a result of a blown.
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Order power door lock relay for your vehicle and pick it up in store make your purchase find a store near you and get directions.
To unlock the doors the switch reverses the polarity of the voltage applied to the solenoid.
Door lock switch fuse location replacement ford focus mk3 2012 2013 2014 2015 2016 2017 2018 in this video we will show you how to replace the fuse for the d.
Check those fuses first but check all the fuses before deciding that a blown fuse is the cause.