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I also discovered today that the back up ligh of my S90 does not work. S90-V90

posted by  toms90 on  Fri Mar 27 14:30 CST 2009
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last visit: Fri Aug 24 21:21 CST 2012
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I check the light bulbs, they're o.k.
Someone says it is the neutral switch goes bad, but when I put the gear
selector in neutral, the car won't start.
And when I move the gear selector from R to P, the back up lights work for a nanosecond :), from P to R is all quiet, though.
If you have any ideas, let me know.
Thanks
Tom








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I also discovered today that the back up ligh of my S90 does not work. S90-V90

uid 11021's pic
posted by  dewfpo on  Sat Mar 28 04:13 CST 2009
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last visit: Thu Oct 23 18:34 CST 2014
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What you describe sounds like a classic case of a malfunctioning PNP sensor. Try putting the gear selector in N, put the key in the ignition and turn to start and hold it there (you'll probably have to use your left hand for this) then with your right hand, slowly move the gear selector forward until the starter engages or slowly backward until the starter motor engages. If this works, you can check to see if the alignment of the PNP sensor is out, but most likely you will need to replace it.

DEWFPO
--
1998 S90 077,400 and 1995 964 154,100








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Update: I also discovered today that the back up ligh of my S90 does not work. S90-V90

posted by  toms90 on  Sat Mar 28 14:10 CST 2009
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last visit: Fri Aug 24 21:21 CST 2012
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I got under the car, and adjusted the PNP. Now all is fine. Thanks everyone.








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Update: From the FAQ: I think I need to replace the PNP switch S90-V90

posted by  toms90 on  Sat Mar 28 02:42 CST 2009
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last visit: Fri Aug 24 21:21 CST 2012
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