Join Date: Jul 2002
Location: Tucson, AZ, USA
Re: Windscreen Motor Problem, Help! 99 LT
Multitester with probes having a "L" type clip on the end so they will grab and hang onto a piece of wire.
You can attach the probes to the electrical connection on the relay and check for continuity with the electrical system off. Depress the switch and it should go from an open circuit to one with almost infinite resistance, a closed circuit.
You can then check for DC voltage with the system energized, switch ON.
You want to check for voltage on one side of the relay, and then the other with the relay closed, then at the motor.
I don't know much about the LT's electrical system. but, I would also clean connections as I check them. Denatured alcohol and a Q-tip works good. Spray contact cleaner, designed for electrical contacts seems like good insurance. Spray into the contact points, connect, then disconnect the contacts a few times. the idea is to remove any oxidation that may have built up on the contact points.
Best from Tucson
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