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Pinpoint Test D: U0137: Notes

DTC Fault Trigger Condition-PCM 

DTC Description Fault Trigger Conditions
U0137 Lost Communication With Trailer Brake Control Module The PCM sets this DTC if data messages from the TBM through the GWM are missing.

Normal Operation and Fault Conditions 

REFER to: Communications Network - System Operation and Component Description .

Possible Sources 

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