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.

Car door lock actuator circuit.

A rod con nects the actuator to the latch and another rod connects the latch to the knob that sticks up out of the top of the door. 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. How a door lock actuator works. This manipulates a series of rods that slide back and forth opening and closing the locking mechanism at the door latch.

The concept of a door lock actuator works great until it doesn t. Car door lock actuators are designed to lock and unlock a door without the effort of pulling on a cable and rod. On a vehicle with electric locks the process is a bit different. A door lock actuator is basically a reversible motor or a solenoid on some vehicles with gears that operate the door lock.

In some cars the door lock actuator is positioned below the latch. 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. On manual locks the locking function operates by pushing or pulling on the door lock.