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Pinpoint Test I : DTC U0100: Notes

DTC U0100 

Refer to Module Communications Network for schematic and connector information.

Normal Operation and Fault Conditions 

The GSM and TRCM use information contained in messages from the PCM sent on the HS-CAN.

NOTE: If a GSM self-test is to be performed, make sure the drivers door is closed and locked.

DTC Fault Trigger Conditions 

DTC Description Fault Trigger Conditions
U0100 Lost Communication With ECM/PCM "A" This DTC sets if the GSM and/or TRCM does not receive some or all of an expected message from the PCM.

Possible Sources 

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