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Pinpoint Test Ai: Abs Module Communication Concern With Pcm

WARNING: This page is about a different car, the 2021 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.

Normal Operation and Fault Conditions 

With the ignition ON, the PCM sends messages to the GWM over the HS-CAN1. The GWM relays these message to the ABS module over the HS-CAN2. If the ABS module does not receive these messages within the allotted time frame or if the messages contain invalid data, the module sets a DTC. This can be due to a PCM failure, a circuit failure on the network or an excessive load on the network. For information on the messages sent to the ABS module by the PCM, refer to the Network Message Chart  .

The TCM is an internal component of the PCM.

DTC Fault Trigger Conditions 

DTC Description Fault Trigger Condition
ABS C1137:64 Reverse gear switch: Signal Plausibility Failure This DTC sets when the when the reverse gear message sent from the PCM indicates the transmission is in REVERSE when other stability control inputs received by the ABS module indicate the vehicle is moving forward.
ABS U0100:00 Lost Communication With ECM/PCM "A": No Sub Type Information This DTC sets when the ABS module does not receive any messages from the PCM within the allowed time.
ABS U0101:00 Lost Communication with TCM: No Sub Type Information This DTC sets when the ABS module does not receive any messages from the PCM within the allowed time.
ABS U0401:00 Invalid Data Received from ECM/PCM A: No Sub Type Information This DTC sets when the ABS module receives messages but the messages contain invalid data.
ABS U0401:64 Invalid Data Received from ECM/PCM A: Signal Plausibility Failure This DTC sets when the ABS module receives messages but the messages contain invalid data.
ABS U0401:86 Invalid Data Received from ECM/PCM A: Signal Invalid This DTC sets when the ABS module receives messages but the messages contain invalid data.
ABS U0402:00 Invalid Data Received from TCM: No Sub Type Information This DTC sets when the ABS module receives messages but the messages contain invalid data.

Possible Sources 

PINPOINT TESTS AI: ABS MODULE COMMUNICATION CONCERN WITH PCM