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AC compressor not working 98 S70 continued......

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, 850 R, 850 T5-R, 850 T5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

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Re: AC compressor not working 98 S70 continued......

Post by scot850 »

I am easily confused. Are we talking ECC (A/C electronic control) in the same breath as the term ECM?

If it is the ECC = ECM we are talking about it is not necessary to disconnect the battery to remove the 2 x harness connectors on the back of the ECC A/C control unit as long as the Ignition is not on. If you have screwed around with the wiring at the ignition to leave it live when the key is out, then for safety sake disconnect the battery so as not to fry anything unintentionally.

2000 V70 R - still being an endless PITA
2006 XC70
2003 Toyota 4Runner V8 Limited
2015 Kia Sportage EX-L
1993 850 GLT -Sold
1998 V70 XC - Sold
1997 Volvo 850 SE NA - Went to niece in California - Sold
2000 V70 SE NA - New project and test bed - Sold
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Re: AC compressor not working 98 S70 continued......

Post by pb49415 »

No I’m referring to the ECM (computer) not dash control. In a previous post here was some confusion there. But, I’m gonna leave it alone. Too many consequences with my situation.
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