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'00 V70 FWD: Fuse 27 keeps blowing - reverse lights / turn signal Topic is solved

Help, Advice and DIY Tutorials on Volvo's extremely popular car line -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, including 850 R, 850 T-5R, 850 T-5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

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abscate
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Re: '00 V70 FWD: Fuse 27 keeps blowing - reverse lights / turn signal

Post by abscate »

You will often find voltage at the load side of a disconnected fuse because of cross feed from loads with ballast resistors , diodes, etc on other circuits. If the fuse is blowing, you have a short or a failed component.

Disconnect the component and that leaves the wiring.

Often shorts are intermittent and so ohm testing won’t show them, the left rear pillar wiring is a classic example
Empty Nester
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1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 BMW
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brooklynsystems
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Post by brooklynsystems »

Ok everyone - thanks for all of the advice! I removed the reverse light bulbs, disconnected the PNP wiring harness and tested pin 5 (to reverse lights) to ground - no reading (OL) - no continuity - so no short in the wires between the PNP and rear lights. That left the PNP itself. Got one from FCP - it arrived this afternoon and I put it in - everything is back to normal! I'm glad I opted for ordering a new one, because the old one that came off didn't have the screws on the back to take it apart... There were 3 different part numbers that all say they fit on my 2000 V70 N/A, I ordered the cheaper one (still genuine volvo) which was PN 9495007 - it said only for Aisin Warner AW55-50SN/51SN transmissions. That one was $123, the other two were $181. Worked perfect. Special thanks to BEJinFbk, abscate and SuperHerman - all of your help is much appreciated! :D

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abscate
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Posts: 24521
Joined: Sun Feb 17, 2013 5:54 pm
Year and Model: 99: V70s S70s,05 V70
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Post by abscate »

Great news, and Godspeed getting through the next week.
Empty Nester
A Captain in a Sea of Estrogen
1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 BMW
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