If your solenoid is being used as part of a car it can still be tested with a multi meter but the continuity test can be done without it.
Testing door lock solenoid.
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.
Here we have soldered all the components on the perf board so that it can be mounted on the door easily.
Unplug the door lock actuator electrical connector.
Injury or death can result from electrocution if proper safety precautions are not observed.
Door lock systems operate the actuator by toggling positive negative voltage to the actuator.
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.
The final solenoid test.
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.
Ensure that all electrical power is shut off and disconnected before proceeding.
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.
Test the door lock solenoid.