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Washers Not Working

Faawks

By Faawks,
in General Maintenance

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Faawks Contributor

Faawks

Posted
Posted

So I'm trying to get this car prepared for rwc and I noticed the front and rear washers aren't working.

I pulled the plugs off both of them and checked them with the multimeter, both sides of each plug are acting as a positive until the washer is activated in which case one becomes a negative.

Is this normal or do I have a short somewhere?

I'm yet to test the actual washer motors themselves, I will when I have time.

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https://www.sau.com.au/forums/topic/444689-washers-not-working/
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89CAL Grand Master

89CAL

Posted
Posted

How are you checking voltage? Seems odd to have positive on both sides then a negative when the switch is activated

There should be power on one side always, then activating the switch puts it to ground

20amp fuse for the front (fuse #24) and 10amp fuse for the rear (fuse #1), keep in mind this is for the whole system, so wiper arms as well.

Other then that the washer circuit itself is pretty straight forward, ACC power in from the fuse, through the washer motor then grounded through the Wiper switch/stalk

89CAL Grand Master

89CAL

Posted
Posted

No worries. Some people just don't know how to use multimeters. That's the only reason I asked

I'll have another look at the diagram later and see if it can/does get a back feed from anywhere

You could try unplugging the wiper module from your engine bay and do the test again (it's rear engine bay passenger side) as this tees off the washer circuit to bring the wiper on. Seen as the issue is on both front and rear I'm not sure if this will make a difference or not

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