Ensure that all electrical power is shut off and disconnected before proceeding.
Testing door lock solenoid.
You should see the voltage polarity toggle with each switch activation.
Once you are ready with the code and hardware you can start testing the solenoid door lock project.
Unplug the door lock actuator electrical connector.
Door lock systems operate the actuator by toggling positive negative voltage to the actuator.
Here we have soldered all the components on the perf board so that it can be mounted on the door easily.
Just a short video to show how you can test a door lock actuator using a car battery or a car jumper.
The final solenoid test.
Injury or death can result from electrocution if proper safety precautions are not observed.
Then use your test light or digital meter to check for power and ground at the connector when you operate the lock unlock switch.
So to test it mount the perf board on the door frame and magnet on the door so that it can detect the door movement.
Locate the solenoid generally found either next to or as a part built into the starter and then with a friend s help insert and turn the vehicle s key.
For the final solenoid test that would determine if your solenoid is damaged or not you would have to connect the red probe of your multimeter to the negative terminal of the solenoid and the black probe of the multimeter to the positive terminal.