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98 Volvo S70 GLT A/C Compressor fault. Replaced AC switch 30767231, 8628563 Topic is solved

Help, Advice and DIY Tutorials on Volvo's P80 platform cars -- 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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vlr7
Posts: 7
Joined: 20 September 2013
Year and Model: 850T-5R, V70-s
Location: Estonia

Re: 98 Volvo S70 GLT A/C Compressor fault. Replaced AC switch 30767231, 8628563

Post by vlr7 »

1/2 and 2/3. 2 being signal, 1 (-), 3 (+)
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abscate
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Year and Model: 99: V70s S70s,05 V70
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Post by abscate »

1-2 40 kOhm

2-3 40 MOhm

Measured at sensor on my 99
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1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 XC90-in-Red
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vlr7
Posts: 7
Joined: 20 September 2013
Year and Model: 850T-5R, V70-s
Location: Estonia

Post by vlr7 »

I got also one sensor from 99 XC. And i tested them, pin 2 (the signal out was 0,9-1,5V with working pump), it came out it wasnt the bad sensor. It was engine ecu. Luckily i had another ecu, and it is working. Fol-FCR is showing correct values now. But climate pump still switches off after ~5min, so i guess its the clutch that has too large gap and gets overheated. Will sort this out and keep you guys informed.
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