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Polarity on an E40D VSS?

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Old Sep 18, 2006 | 09:29 AM
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Tsaven Nava
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Polarity on an E40D VSS?

Alright, so I've got the Vehicle Speed Sensor that goes into the tailshaft of my E40D. I need to hook it up to the trans computer (aftermarket unit), but . . . well, which side is positive, which negitive? The wiring diagram for the computer indicates "VSS+" and "VSS-". Which pin is which? There's only two.
 
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Old Sep 18, 2006 | 10:16 AM
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Not an electronics expert, but I know it's an AC signal from the VSS so I don't think it would matter.
 
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Old Sep 18, 2006 | 10:17 AM
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Oh, really? The wiring diagram for the trans computer specificly indicates as a + and -, but in reality it doesn't matter?
 
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Old Sep 18, 2006 | 10:19 AM
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I wouldn't think so with AC, but like I said I"m no expert.
 
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Old Sep 18, 2006 | 10:20 AM
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Well if it actually is AC then yes you're probably right. I was just suprised to hear that it is AC
 
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Old Sep 18, 2006 | 10:26 AM
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I know on mine it's an AC signal but the VSS is in the rear differential on my 94 because it's also the rear wheel ABS sensor. I'm not sure with your setup, I've never seen a VSS in the tailshaft on an E4OD.
 
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