Originally Posted by
Chrisjlyon
I have an 04 that blows fuse number 7 every time I turn the key to on. Not even to start. With me BCM removed it doesn't happen so it's somewhere in that circuit. Which if it's after the BCM it could literally be anywhere. Any suggestions on trying to find this short. Thanks.
Also I have the diagrams already.
Thanks
Very hard to track down a short like this. I would get the pinout of the BCM (IF that is the ONLY thing fed from fuse 7), review all the individual systems switched by it, and then systematically isolate/check each circuit using both the schematic AND MOST IMPORTANT, usual trouble parts that are well known. This will take time, a systematic approach, and LUCK. Good luck, I do not envy your situation.
I wonder if plugging in a salvage BCM (just for a test), would help determine if the BCM is the fault location? I don't have enough experience in this regard. It
might help determine if you have a bad BCM, as I read some posts.
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