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Old 07-13-2015, 10:25 AM   #1
dudmahn
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Help, chipmunk chewed through transmission wiring harness!

I have a 2001 325i, which I left parked outdoors for an extended period of time. Unfortunately, a chipmunk (squirrel, rat, or some other nefarious creature) built a nest under the hood, and chewed completely through the wires between the E-Box and the transmission range position sensor. I've attached some pictures of the destruction for your enjoyment.

The primary symptom of this condition is that the engine won't crank. Apparently the vehicle must know the current transmission gear before it will allow the engine to crank (makes sense, I suppose). I'm beginning to wonder if the creature was aware of this safety feature, and so made this surgical strike to prevent its new home from being disturbed...

Anyway, I'm looking for suggestions on how to fix the problem.

My first thought was to solder the wires back together, but there is not enough remaining wire on the connector to do that. So, I'd need to remove the pins from the connector, do the soldering, and then replace the pins. Another option might be to purchase new pins for the connector, crimp them to the wires, and then insert the new pins into the connector. Either of these options requires a (possibly connector-specific) pin removal tool.

I've searched around, but I can't seem to find the manufacturer of this connector. I could use some help identifying the connector, where to purchase an appropriate pin removal tool, and replacement female pins.

The numbers on the connector are:
"09 4310 06 B 5"
"48716 6"

It looks like this connector is part of the wiring harness with BMW part number 12517506792. Purchasing a replacement wiring harness (~ $290) is not really an option for me, as I'm on a tight budget for this repair.

I suppose I might consider buying a used harness on ebay, or possibly a trip to the salvage yard, but I'd like to explore the cheapest options first.

Disclaimer: No animals have been harmed during the diagnosis of this issue... yet.
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Old 07-13-2015, 10:50 AM   #2
jfoj
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Wiring connectors and terminals are a PITA to figure out and find in the parts system.

But you can start with www.realoem.com and look around and see what you can find.

BMW sells what they recall "Repair Cables/Wires" that are typically 12-18" long with a factory crimped terminal on each end. If you can identify the correct terminal style, then you can order/pick up the correct "Repair Cables/Wire". Also the actual terminal/pin can often be purchased as well. These tend to be called a "Pin Contact".

You should be able to remove the terminals from the connector headshell, but these often require special tools to compress the locking tab on the terminal.

Might also check these links -

http://www.realoem.com/bmw/enUS/part...BMW-325i&mg=61

http://www.realoem.com/bmw/enUS/show...diagId=61_1691

The other option is a scrap yard/junk yard to find the connector and cut the harness back 1+ foot and end up with a pigtail that you can splice on to the current wires.
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Old 07-13-2015, 11:36 AM   #3
dudmahn
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Thanks jfoj. Those links look promising. A trip to the junk yard might indeed be the way to go, if I can't find the specific tools and replacement pins.
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Old 07-13-2015, 12:00 PM   #4
franz
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I didn't realize Donald Trump had misplaced his hairpiece.
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Old 07-13-2015, 12:03 PM   #5
dudmahn
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franz - I didn't know the hairpiece had teeth! Too funny!...
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Old 07-13-2015, 02:24 PM   #6
PabloCruise
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I have heard that rodents really like BMW wiring. A co-worker had damage to his wiring and told me that BMW applies some kind of almond extract to the wiring as part of manufacturing - is this true?
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Old 07-13-2015, 08:55 PM   #7
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Just get a used transmission harness. I have a GM harness, but i think you need the ZF harness since it has the separate range selector connector.

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Old 07-13-2015, 11:43 PM   #8
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I'm not going to tell you it will be easy to figure out but the wiring diagrams for the e46 in their entirety can be found at http://www.bmw-planet.com/diagrams/r.../e46/index.htm
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Old 07-14-2015, 10:28 AM   #9
dudmahn
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TitaniumCranium: Thanks for the link to the E46 wiring diagrams. That's an excellent resource. I found the wires in question, but unfortunately there was no information on the connector.
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Old 07-14-2015, 10:30 AM   #10
dudmahn
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BMWCaptain: I just ordered a used transmission harness from ebay for under 60 bucks. Can't go wrong with that, I suppose. It's not that much more than I'd pay at a salvage yard, and a lot less hassle too!
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Old 07-14-2015, 10:51 AM   #11
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Quote:
Originally Posted by dudmahn View Post
BMWCaptain: I just ordered a used transmission harness from ebay for under 60 bucks. Can't go wrong with that, I suppose. It's not that much more than I'd pay at a salvage yard, and a lot less hassle too!
Yes, a lot less hassle. Sometimes what is at the junkyards is not there or in bad condition. Delivered to the door is great!
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Old 07-14-2015, 12:03 PM   #12
dudmahn
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Quote:
Originally Posted by BMWCaptain View Post
Delivered to the door is great!
Yes, especially when the nearest salvage yard with a suitable vehicle is an hour drive away!!
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