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Pinpoint Test C : U0164: Notes

DTC Fault Trigger Condition-PCM 

DTC Description Fault Trigger Conditions
U0164 Lost Communication With HVAC Control Module The FCIM controls the HVAC control module functions. The PCM sets this DTC if data messages received from the HVAC control module through the GWM are missing.

Normal Operation and Fault Conditions 

REFER to: Module Communications Network .

Possible Sources 

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