![]() ![]() Any time I have experienced any type of "COMM FAIL" on a BB, it is a J1939 problem. If anyone has any insight on this I would appreciate it. The front leaf springs were changed recently so I'm guessing whoever did that missed plugging something in on the main harness. I tried unplugging an abs sensor and the light on the dash doesn't come on. I have checked any relevant fuses and relays, the plugs and pins to the module are fine, the module itself is fine, the plugs and pins to the ECM are fine. ![]() ![]() The only thing that hints to the problem is in the message center under the odometer it reads "ABS COMM FAIL". The abs light comes on during initial startup just as its supposed to then goes off. I am currently working on a 2006 BlueBird All American with front mounted C7 CAT and equipped with Bendix Air. ![]()
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