Car Door Lock Actuator Circuit

In some cars the door lock actuator is positioned below the latch.

Car door lock actuator circuit.

How a door lock actuator works. When the actuator moves the latch up it connects the outside door handle to the opening mechanism. On a vehicle with electric locks the process is a bit different. When the actuator fails or starts to fail you ll likely notice one or more symptoms that make your daily commute less pleasant.

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. 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.

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