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Home >> Ford >> 2022 >> Mustang Mach 1 Premium, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 20 (Abs Guided Routine Testing - Pinpoint Tests C - CZ) >> Abs Pinpoint Tests >> Pinpoint Tests CZ: SASM Communication Concern With FCIM >> Normal Operation and Fault Conditions

Normal Operation and Fault Conditions

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With the ignition ON, the FCIM sends messages to the SASM through the GWM over the MS-CAN. If the SASM does not receive these messages within a certain time frame (usually less than 1 second), the module sets DTCs. For information on the messages sent to the SASM by the FCIM, refer to the Description and Operation in the Anti-Lock Brake System (ABS) and Stability Control article. 

PPT CZ ABS MODULE DTC FAULT TRIGGER CONDITIONS

DTC Description Fault Trigger Conditions
U0557:82 Invalid Data Received From Front Controls Interface Module 'A': Alive/Sequence Counter Incorrect/Not Updated This DTC sets when the SASM does not receive fresh data from the FCIM within the allotted time.