ok... I hope someone can help. I have a 2010 JCW Clubman. Recently just replaced the t-stat housing, and now car is throwing an P0108 code, which I'm taking as an issue to one of the MAP sensors. My first thought is somehow a wire got buggered, and would just to do some wire tracing/continuity tests.. does anyone know the wire trace for this, or tips where to start? I do get 5v at the MAP on the intake, and I believe 1.5v at the signal wire there, but haven't found any information about how to test the boost controller (DVM?) or how it's connected, in relation. thanks in advance.

 

Did you check to make sure everything is connected and secured? It’s odd that it would occur right after the T-Stat replacement. They had to disconnect a lot of stuff to get to the T-stat. Make sure they didn’t bend the little terminals inside the MAP plug. Make sure they didn’t the plug on top of the T-stat confused with the other nearby plug (Green & brown if I remember correctly). If you aren’t careful you can jam the plug and it will fit, but isn’t the correct position.

 

yes... first thing I did was go through and verify all the connections. Just on a whim, I swapped the MAP sensor with no change.. the only other thing I could think of that might cause the P0108 code is the T-MAP (boost) sensorwhich also seems good - got 5v signal, ground continuity, resistance changes as car operates, and signal lead also changes... so I figure I'm down to wiring... problem is, I can't find a wiring diagram on the web anywhere, and the Chilton's manual I have is woefully lacking. at a loss at this point.

 

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