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- Protege5 2003
If the contacts have not overheated on your control unit (no plastic melting) before doing anything else it would be wise to put a voltmeter across the switch from the active wire to the ground (at the switch, not at some other point on the chassis). If there isn't a "big" voltage drop there (>0.1 volts) then look elsewhere for your problem.
Here is a slightly more in depth discussion (I have no connection to that company) of what you are looking for:
http://www.vestest.com/VDTestSwitch.pdf
Except on the P5 the test must also include the contacts on the wires at the back. That is, the voltage drop could be inside the switch or at those contacts. If there isn't a voltage drop anywhere it would be pointless and possibly counter productive to do anything to those contacts.
Here is a slightly more in depth discussion (I have no connection to that company) of what you are looking for:
http://www.vestest.com/VDTestSwitch.pdf
Except on the P5 the test must also include the contacts on the wires at the back. That is, the voltage drop could be inside the switch or at those contacts. If there isn't a voltage drop anywhere it would be pointless and possibly counter productive to do anything to those contacts.