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2001 Honda Civic EX. Single power lock switch on driver's door doesn't do anything at all when pressed up or down. Will someone please tell me how to test the wiring module that feeds the switch? It appears to have three slots for the three pins on the switch and the wiring feeding these three slots are: 1) white/blue; 2) black; and 3) white/green.
Switch makes clicking noise when physically pressed up or down, which suggests that it's working correctly. So I want to make sure that power is arriving to it as needed.
I grounded tester on nearby metal and placed probe in each of the three slots -- one at a time. Tester did not light up with any of these three tests. Am I doing something wrong?
With the driver's door lock switch disconnected the black wire should have ground. If you short white/blue to ground the doors should lock. If you short white/green to ground the doors should unlock. If all of that checks out then you've narrowed it down to the lock switch.
If you're missing ground or cannot get the doors to lock/unlock by shorting ground to either of the other pins then you may have a broken wire in the door harness. We've seen wires break from being bent every time the driver door opens/closes.
