How Does A Power Door Lock Actuator Work

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. Then use your test light or digital meter to check for power and ground at the connector when you operate the lock unlock switch. Then when you press the switch to lock the doors the lock moves in the opposite direction.

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You should see the voltage polarity toggle with each switch activation.

How does a power door lock actuator work.

What happens inside the car door. This actuator can move the metal hook shown in this photo to the left or right. The mechanism allows for the rods to work in conjunction to power the actuator. Door lock systems operate the actuator by toggling positive negative voltage to the actuator.

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. A door lock actuator is basically a reversible motor or a solenoid on some vehicles with gears that operate the door lock. Door lock actuators are an electronic component found on vehicles equipped with power door locks. How power door locks work.

When mounted in the car it is vertical so the hook can move up or down. It mimics your motions when you pull the knob up or push it down. This system is quite small in size. When the actuator moves the latch up it connects the outside door handle to the opening mechanism.

The power door lock actuator is a simple mechanical device. Unplug the door lock actuator electrical connector. The body controller is a computer in your car. By a signal from a control center in some cars that have power door locks the lock unlock switch actually sends power to the actuators that unlock the door.

But first let s see how the car keeps all its signals straight. But in more complicated systems that have several ways to lock and unlock the doors the body controller decides when to do the unlocking. A connecting rod attaches to the actuator and another one connects the latch to the manual knob that sticks out the top of the door. The lock buttons are located on each of the doors with a master switch on the driver s door.

A power door lock actuator is typically positioned somewhere below the latch. The door lock actuator locks and unlocks your vehicle s doors. The last gear drives a rack and pinion gear set that is connected to the actuator rod. 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.

A small electric motor turns a series of spur gears that serve as a gear reduction. Once the button is pressed it triggers the actuator allowing the doors to be locked. A car door in this car the power door lock actuator is positioned below the latch. The motor reverses direction so that when you press the switch to unlock the doors the lock moves in one direction.