Car Door Lock Actuator Circuit

On manual locks the locking function operates by pushing or pulling on the door lock.

Car door lock actuator circuit.

If there are no external door lock switches you will most likely have a vacuum type system or an aftermarket door lock system with relays or have an added actuator that needs relays. When the actuator moves the latch up it connects the outside door handle to the opening mechanism. When the actuator fails or starts to fail you ll likely notice one or more symptoms that make your daily commute less pleasant. A door lock actuator is basically a reversible motor or a solenoid on some vehicles with gears that operate the door lock.

The concept of a door lock actuator works great until it doesn t. Next with your multi meter probe each of the wires in this harness and write down the readings during lock unlock and at rest positions of the switch. In some cars the door lock actuator is positioned below the latch. How a door lock actuator works.

On a vehicle with electric locks the process is a bit different. Car door lock actuators are designed to lock and unlock a door without the effort of pulling on a cable and rod. A rod connects the actuator to the latch and another rod connects the latch to the knob that sticks up out of the top of the door.