How Door Lock Actuator Works

But first let s see how the car keeps all its signals straight.

How door lock actuator works.

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. Door lock actuators are an electronic component found on vehicles equipped with power door locks. Inside the power door lock actuator. You should see the voltage polarity toggle with each switch activation.

Spray electrical cleaner onto the black electrical connector. How a door lock actuator works on manual locks the locking function operates by pushing or pulling on the door lock. A door lock actuator is basically a reversible motor or a solenoid on some vehicles with gears that operate the door lock. In many cars the door lock actuator is built with the latch mechanism into one assembly in the photo.

They are the electronically controlled actuators in every single door that are responsible for locking and unlocking the power door locks when the switches are pressed. It mimics your motions when you pull the knob up or push it down. Reinstalling the door lock actuator step 1. For this reason the whole door lock assembly is often called door lock actuator.

The motor reverses direction so that when you press the switch to unlock the doors the lock moves in one direction. Then use your test light or digital meter to check for power and ground at the connector when you operate the lock unlock switch. To the coil of the respective relay. This manipulates a series of rods that slide back and forth opening and closing the locking mechanism at the door latch.

To lock or unlock the vehicle polarity is changed on one motor leg via a positive pulse from a switch alarm keyless entry etc. A small electric motor turns a series of spur gears that serve as a gear reduction. Unplug the door lock actuator electrical connector. Attach the plastic door lock actuator back onto the.

Door locks actuators reverse polarity positive switch trigger type d relay wiring diagram both motor legs rest at ground at the relays. Part 5 of 6. Clean and reconnect the actuator. This system is quite simple.

Door lock systems operate the actuator by toggling positive negative voltage to the actuator. On a vehicle with electric locks the process is a bit different. Reinstall the plastic cover and replace the assembly.