Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Lincoln >> 2023 >> Corsair Base, AWD >> Repair and Diagnosis >> Brakes >> Traction Control >> Anti-Lock Brake System (Abs) And Stability Control >> Diagnosis And Testing >> Anti-Lock Brake System (ABS) and Stability Control >> Pinpoint Tests >> Pinpoint Test BM: Abs Module Communication Concern With The ATCM (All Terrain Control Module)

Pinpoint Test BM: Abs Module Communication Concern With The ATCM (All Terrain Control Module)

NOTE: The ATCM may also be called the traction control switch in other publications

Normal Operation and Fault Conditions 

With the ignition ON, the ATCM sends messages to the ABS module over the HS-CAN 2. If the ABS module does not receive these messages within a certain time frame (usually less than 1 second), the ABS module sets a DTC. For information on the messages sent to the ABS module by the ATCM, refer to Anti-Lock Brake System (ABS)  .

DTC Fault Trigger Conditions 

DTC Description Fault Trigger Condition
ABS U0138:00 Lost Communication with All Terrain Control Module: No Sub Type Information This DTC sets when the ABS module does not receive any messages from the IPMA within the allowed time.
ABS U0439:00 Invalid Data Received From All Terrain Control Module: No Sub Type Information This DTC sets when the ABS module receives messages from the IPMA, but the messages contain invalid data.

Possible Sources 

scientia non olet · About Mike's Workshop Manuals