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Old Oct 15, 2013 | 03:11 PM
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Default Reduced Engine Power, Shocks Inop, etc.

2001 coupe, M6

I went to a friend's house last night, I got in the car after an hour or so to head back home and the dash lit up like a Christmas tree and it's giving me several messages. Also, my oil pressure, temp and fuel gauges are not working, they are pegged on their respective red zones.

Yes, I searched. Yes, I am familiar with the excellent Bill Curlee thread, and I even found the exposed wire in my driver's door....I just realized I didn't check passenger door, but I digress...

The problem is that I went to clear my codes and every computer is indicating No Comm.

Last week I fixed the EBCM (re-soldered the relay, and a couple of other spots) and in the process I checked the two grounds in the engine compartment, but they were essentially spotless. I did not check those other grounds, I will if necessary. The car has low miles (70k now) and has usually been garaged.

Help?
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Old Oct 15, 2013 | 03:53 PM
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Bad connection somewhere. Do the power windows work?
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Old Oct 15, 2013 | 03:55 PM
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The bare wire is NOT a problem. It was misdiagnosed and is only a SPEAKER SHIELD.

However,,,,,,,,,, If you disconnect the door connectors, you will find that the FEMALE PINS spread apart and cause a poor intermittent connection. That causes a corrupt serial data line and everything goes crazy.

OR you have a wet damp BCM. Check the BCM and the carpet underlayment for water/dampness. If the BCM gets the least bit wet everything goes NUTS.

Bill
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Old Oct 15, 2013 | 08:06 PM
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Originally Posted by 3boystoys
Bad connection somewhere. Do the power windows work?
No, the power windows are not working.

I'm going to check both of those door connectors.
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Old Oct 15, 2013 | 08:36 PM
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Originally Posted by Bill Curlee
The bare wire is NOT a problem. It was misdiagnosed and is only a SPEAKER SHIELD.

However,,,,,,,,,, If you disconnect the door connectors, you will find that the FEMALE PINS spread apart and cause a poor intermittent connection. That causes a corrupt serial data line and everything goes crazy.

OR you have a wet damp BCM. Check the BCM and the carpet underlayment for water/dampness. If the BCM gets the least bit wet everything goes NUTS.

Bill
BCM good. Female connectors bad. I hate to think what that would have cost if not for this forum and you. Thanks Bill.
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Old Oct 16, 2013 | 04:18 PM
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I LOVE IT,,,,,,,,,,,,,,, when a plan comes together!

Glad it was that simple!!!!!!!!!!!!
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Old Oct 16, 2013 | 06:52 PM
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Bill, you are the man.

I had the same warnings and issues with the gauges, first time it happened it was at ~150 mph, scary as hell to look at your oil pressure at that speed and see it at 0 PSI.

Read about it here and did the liquid tape on the exposed wire on the door, no issues since. Glad to learn it's actually the connector if the problem comes back.
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Old Oct 17, 2013 | 01:14 PM
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Originally Posted by hxrly
Bill, you are the man.

I had the same warnings and issues with the gauges, first time it happened it was at ~150 mph, scary as hell to look at your oil pressure at that speed and see it at 0 PSI.

Read about it here and did the liquid tape on the exposed wire on the door, no issues since. Glad to learn it's actually the connector if the problem comes back.
Look at my time stamps if you want to get an idea of how easy it is to fix. 1/2 hour from WTF? to fixed. That includes my slow typing-time!

If anybody sees this...here's a tip- If you pull the connector apart, then pull that little blue plastic piece, you can get behind the female part with a small screwdriver and bend it out. I hope that makes sense. If you look at it, you will understand.
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