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Pinpoint Test BM : U0131:00 Or U0420:82: Notes

Normal Operation and Fault Conditions 

IPC DTC Fault Trigger Conditions 

DTC Description Fault Trigger Conditions
U0131:00 Lost Communication With Power Steering Control Module: No Sub Type Information Sets in continuous memory in the IPC if data messages received from the PSCM through the GWM are missing for 5 seconds or longer.
U0420:82 Invalid Data Received From Power Steering Control Module: Alive/Sequence Counter Incorrect/Not Updated Sets in continuous memory in the IPC if updated data messages received from the PSCM are missing for 5 seconds or longer.

Possible Sources