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1999 V70NA Shagg Current drain 050 Amp to 1.5 Amp on pulling powertrain Buss Fuse

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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abscate  
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1999 V70NA Shagg Current drain 050 Amp to 1.5 Amp on pulling powertrain Buss Fuse

Post by abscate »

Im still battling battery drain on Shagg. Ive measured current drain at <100mA but the battery goes dead after one day.

100mA x 24 hours is only 2 amp hours, that should last 10-20 days

I got down and dirty into it today. Pulling the POWERTRAIN BUS fuse, the big 60A one, caused a 1.5 Amp drain on the B+

This is encouraging. if I pull the main fuse box BUS fuse the drain goes away, and doesnt come back on replacing.

I have isolated the transient and will update.
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1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 XC90-in-Red
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abscate  
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Year and Model: 99: V70s S70s,05 V70
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Post by abscate »

Update

The big buss fuse B6 powers fuses C5-10 in the under cowl fuse box, I was able to isolate the power draw to fuse c5

C5: ECC component test circuit. Pulling that fuse reduces draw from 1.5vamp to about 50 mA
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wizechatmgr
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Post by wizechatmgr »

Can you pull the two plugs off the back of the ECC and pop the fuse back in for verification?
Wisdom requires knowledge as a prerequisite, but knowledge can be developed due to a lack of wisdom.
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1999 V70 XC AWD 2.4 T -- ~231k miles
1998 V70 2.4 NA -- ~184k miles
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