How to fix a Mini Cooper that won't link to a scan tool

This is an amateur case study of a 2005 Gen I R50 Mini Cooper with an inability to communicate with various diagnostic scan tools. The overall design of the communication pathways in the Mini are discussed, and a diagnostic strategy to solve this problem is demonstrated. Ultimately this repair was done with no parts and no computer programming, but hours of time was spent searching for the cause.

DIY Auto repair is a potentially dangerous adventure, both with reference to personal safety and also in terms of the possibility of causing damage to the vehicle. Before you attempt to fix your own car, you should honestly evaluate your skills and tools and decide whether you have the stomach to accept risk. Repair procedures are rarely as easy or uncomplicated as they may be portrayed on Youtube. The real test of a mechanic is the depth of his skill set, allowing him to dig himself out of difficulty when complications arise. An experienced mechanic will also use a work flow that reduces the chance of secondary issues. Any misadventure you encounter if you decide to accept the risk of home repair is your responsibility.
The brief audio clip at the end is River Meditation, by Audionautix.
River Meditation by Audionautix is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/)
Artist: http://audionautix.com/

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