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ideola
Joined: 01 Oct 2004
Posts: 15550
Location: Spring Lake MI
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 Posted: Mon Apr 23, 2012 2:37 am Post subject: 3v at wiper motor plug |
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What would cause only 3v to show up at the main plug for the wiper motor?
I;ve switched relay with known good unit. Good ground. Only 3v on the power, and then when putting the switch in the different positions, I only get 3v on each of the respective plugs (hi-speed, lo-speed, intermittent). I presume resistance somewhere in the circuit, but just want to sanity check what I need to go after.
Bad switch? Bad switch connections? Resistance in the 12v supply? Bad connections at the fuse block? Anything I'm overlooking?
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erstwhile owner of just about every 924 variant ever made |
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Harm
Joined: 02 Apr 2009
Posts: 1376
Location: Holland
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| Posted: Mon Apr 23, 2012 3:22 am Post subject: Re: 3v at wiper motor plug |
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Did you give it good ground since it hangs in rubber?
Just a thought. HTH |
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!tom
Joined: 28 Aug 2006
Posts: 1941
Location: Victoria, BC Canada
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| Posted: Mon Apr 23, 2012 5:36 am Post subject: |
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First thing I'd do with a wonky voltage reading like that would be to try to see if there's something drawing lots of juice causing the low voltage reading.
Put an ammeter in series with each wire and see if there's power going somewhere it shouldn't.
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78 924 NA
5-lug |
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