Car Door Lock Actuator Circuit

A door lock actuator is basically a reversible motor or a solenoid on some vehicles with gears that operate the door lock.

Car door lock actuator circuit. In some cars the door lock actuator is positioned below the latch. This manipulates a series of rods that slide back and forth opening and closing the locking mechanism at the door latch. In this car the power door lock actuator is positioned below the latch. How a door lock actuator works.

On manual locks the locking function operates by pushing or pulling on the door lock. When the actuator moves the latch up it connects the outside door handle to the opening mechanism. Car door lock actuators are designed to lock and unlock a door without the effort of pulling on a cable and rod. The concept of a door lock actuator works great until it doesn t.

When the actuator fails or starts to fail you ll likely notice one or more symptoms that make your daily commute less pleasant. 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. 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.