How Does A 2 Wire Door Lock Actuator Work

Another symptom of a potential problem with the power door lock actuators are door locks that behave erratically.

How does a 2 wire door lock actuator work. Power door locks behave erratically. The 2 wires named battery red wire after the fuse to positive 12 vdc and the black to ground or minus battery pin. How power door locks work. I want to use an arduino to activate a two wire actuator automobile power door lock mechanism.

This actuator can move the metal hook shown in this photo to the left or right. Car door lock actuators are designed to lock and unlock a door without the effort of pulling on a cable and rod. On manual locks the locking function operates by pushing or pulling on the door lock. On a vehicle with electric locks the process is a bit different.

When mounted in the car it is vertical so the hook can move up or down. Here is an easy 5 wire setup for anyone to use in any vehicle without the use of any relays. Solenoid and dc motor. In some cars the door lock actuator is positioned below the latch.

The actuator runs off 12 volts. When power is applied the actuator flips in one direction. Door locks actuators reverse polarity positive switch trigger type d. Each door has its own actuator.

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. Power door locks do not function. Be aware this product will draw 8 ma of current 24 7 or 5 8 amp hours per month out of your battery in addition the energy to open close the lock as many times you do that each day or week. If the door lock actuator doesn t work with any method then the problem can be the door lock actuator itself the wiring or the control module.

If you reverse the polarity on the actuator and apply power it flips in the other direction. This manipulates a series of rods that slide back and forth opening and closing the locking mechanism at the door latch. Symptoms of a failing door lock actuator. Both motor legs rest at ground at the relays.

To lock or unlock the vehicle polarity is changed on one motor leg via a positive pulse from a switch alarm keyless entry etc. It mimics your motions when you pull the knob up or push it down. How to wire automotive spdt relays.