2007 Bluebird Vision/ Engine Comm Failure, Trans Comm Failure, ABS Comm Failure
I have a 2007 Bluebird Vision with a C7 Acert engine and Allison transmission.
When I turn the key to the run position (without starting) the speedometer reads engine comm failure, trans comm failure, and ABS comm failure. All of the gauges start sweeping. The bus can be started, however the problem persists.
This occurred infrequently at first, now it happens everytime I try to start the bus. I have tried another speedometer after reading it is the "master gauge". It did not solve the problem however it was a used part.
Any help would be greatly appreciated