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  #1  
Old 01-13-2017, 12:48 PM
tjh54 tjh54 is offline
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2001 z3 3.0i electrical short

I have a parasitic drain on my 2001 BMW Z3. I have traced it to fuse #31. Fuse 31 has links the air conditioning, clock, instrument cluster, and on board and outside Temp displays. I have never worked on an electrical short before. Does anyone have any advice on my next step?
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  #2  
Old 01-13-2017, 03:48 PM
nfunk nfunk is offline
1998 BMW Z3 2.8L
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What type of current draw do you see?
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Old 01-14-2017, 08:03 AM
tjh54 tjh54 is offline
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about 03.6 if I remember correctly.
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Old 01-14-2017, 09:08 AM
nfunk nfunk is offline
1998 BMW Z3 2.8L
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Ok, if that is 3.6 amps then definitely there is a problem. Otherwise if it is 3.6 ma then that should not be a problem. Not being able to look at a circuit diagram, and if it is 3.6 amps (about the current draw of an AC clutch), you might try to unplug the AC clutch to see if that solves the problem.
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Old 01-14-2017, 09:31 AM
tjh54 tjh54 is offline
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Amps
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Old 01-14-2017, 12:49 PM
Blacklane Blacklane is offline
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What are you using to determine what Fuse 31 powers?
According to the Bentley manual for my 1998, that fuse powers the OBD-II connector, anti-theft module, electronic immobilizer, chime module, on-board computer, clock, and cluster.
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Old 01-14-2017, 01:26 PM
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vintage42 vintage42 is online now
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Quote:
Originally Posted by tjh54 View Post
I have a parasitic drain on my 2001 BMW Z3. I have traced it to fuse #31. Fuse 31 has links the air conditioning, clock, instrument cluster, and on board and outside Temp displays...
According to my Bentley Manual for 1996-2002, Page 610-21, Table i, 2001-2002 Fuse Panel, Fuses F1-F54:
Fuse 31, 5 amps rating, protects: Anti-theft, Board computer, Clock, EWS, Instrument cluster, Starting system.
The anti-theft system there is a normal drain.
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Old 01-14-2017, 08:00 PM
tjh54 tjh54 is offline
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Quote:
Originally Posted by vintage42 View Post
According to my Bentley Manual for 1996-2002, Page 610-21, Table i, 2001-2002 Fuse Panel, Fuses F1-F54:
Fuse 31, 5 amps rating, protects: Anti-theft, Board computer, Clock, EWS, Instrument cluster, Starting system.
The anti-theft system there is a normal drain.
REALOEM is down and I don't have a wiring diagram.
I do have access to the Bentley. I'll see if I can figure anything out. Thanks
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