Question about 2000 Ford Focus
Well, if you have access to a multimeter, you can unhook the switch and check resistance across it or you can leave it in the system and verify voltage is making it to the pump. This will tell you if it is the switch or the pump. The other option is to guess and replace one of them and hope you are right. If the rear screenwash is powered through the same button, then the problem is definately the pump. There may also be a relay in the system, which could also be the culprit. Your best bet is to find a wiring diagram (check out the Haynes manual from your local auto parts store) and see what is in the circuit, then trace voltage to the first component that no longer has voltage, and there is your problem. Remember, no voltage will pass the switch unless it is closed.
Posted on Jul 15, 2008
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Posted on Jan 02, 2017
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