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BMW 320d 2006 Electrical Fault



 
 
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  #1  
Old January 1st 16, 09:17 PM posted to alt.autos.bmw
Xrhodie
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Default BMW 320d 2006 Electrical Fault

Electrical fault shows up, seems to be a short or fault in maybe a 'chip'
connection. Result==the following don't work, turn signals, A/C, automatic
transmission won't shift (remains maybe in 3rd gear), speedometer, windshield
wipers start and stop intermittently without switching on. Stop vehicle, turn
off engine and restart to find all seems ok for a period of time.

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  #2  
Old January 1st 16, 09:59 PM posted to alt.autos.bmw
Scott Dorsey
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Default BMW 320d 2006 Electrical Fault

Xrhodie > wrote:
>Electrical fault shows up, seems to be a short or fault in maybe a 'chip'
>connection. Result==the following don't work, turn signals, A/C, automatic
>transmission won't shift (remains maybe in 3rd gear), speedometer, windshield
>wipers start and stop intermittently without switching on. Stop vehicle, turn
>off engine and restart to find all seems ok for a period of time.


You will not solve this without the wiring diagram, so if you have not dug
deep into your pockets for the CD-ROM, now is the time to do so.

I don't have the diagram, but I bet when you get it that you will find
everything on your list shares a common fuse, connector, or most likely
relay. Start with the AC and the turn signals since those are going to
be fairly simple and good starting points, and work down the wiring
diagrams until you find the point where they come together. Then start
looking at everything upstream from there.

If the windshield wiper gets control signal from one fuse and motor power
from another fuse, that wiper behaviour would make sense. But I don't have
a diagram for that car and without the diagram you cannot even begin to do
basic troubleshooting.

Relays and connectors are _always_ suspicious. My tendency is to clean
every connector I disconnect for diagnostic purposes, and pack it with
dielectric grease if it hasn't already been greased. This will save you
grief a decade down the road. The easy reset makes it sound like it's
not a connector problem but don't rule it out completely. Get the diagram.
--scott


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"C'est un Nagra. C'est suisse, et tres, tres precis."
 




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