How Door Lock Actuator Works

Then when you press the switch to lock the doors the lock moves in the opposite direction.

How door lock actuator works. Clean and reconnect the actuator. To lock or unlock the vehicle polarity is changed on one motor leg via a positive pulse from a switch alarm keyless entry etc. Reinstalling the door lock actuator step 1. Reinstall the plastic cover and replace the assembly.

Spray electrical cleaner onto the black electrical connector. This manipulates a series of rods that slide back and forth opening and closing the locking mechanism at the door latch. The door lock actuator is an electric actuator that operates the door latch mechanism in cars with power door locks. In this edition of howstuffworks we ll learn just what s inside your door that ma kes it unlock we ll take apart the actuator that does the work and then we ll learn how the lock can be forced open.

Then use your test light or digital meter to check for power and ground at the connector when you operate the lock unlock switch. A door lock actuator is basically a reversible motor or a solenoid on some vehicles with gears that operate the door lock. The power door lock actuator is a pretty straightforward device. You should see the voltage polarity toggle with each switch activation.

Door lock systems operate the actuator by toggling positive negative voltage to the actuator. How a door lock actuator works on manual locks the locking function operates by pushing or pulling on the door lock. A small electric motor turns a series of spur gears that serve as a gear reduction. Inside the power door lock actuator.

In many cars the door lock actuator is built with the latch mechanism into one assembly in the photo. Door locks actuators reverse polarity positive switch trigger type d relay wiring diagram both motor legs rest at ground at the relays. On a vehicle with electric locks the process is a bit different. For this reason the whole door lock assembly is often called door lock actuator.

This system is quite simple. Door lock actuators are an electronic component found on vehicles equipped with power door locks. Unplug the door lock actuator electrical connector. To the coil of the respective relay.

But first let s see how the car keeps all its signals straight. Part 5 of 6. It mimics your motions when you pull the knob up or push it down.