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Pinpoint Test N : DTC U0155: Notes

Refer to Module Communications Network for schematic and connector information.

Normal Operation and Fault Conditions 

The IPC, GSM and TRCM use information contained in messages 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
U0155 Lost Communication With Instrument Panel Cluster (IPC) Control Module This DTC sets if the TRCM and/or the GSM does not receive some or all of an expected message from the IPC.

Possible Sources 

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