Normal Operation and Fault Conditions
WARNING: This page is about a different car, the 2020 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.
With the ignition ON, the TCCM sends messages to the GWM over the HS-CAN1, the GWM relays these 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 DTCs. For information on the messages sent to the ABS module by the TCCM, refer to the Description and Operation in the Anti-Lock Brake System (ABS) and Stability Control article.
DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Condition |
| ABS U0102:00 |
Lost Communication with Transfer Case Control Module: No Sub Type Information | This DTC sets when the ABS module does not receive any messages from the PCM . |
| ABS U0403:00 |
Invalid Data Received From Transfer Case Control Module: No Sub Type Information | This DTC sets when the ABS module receives one or more messages from the PCM that contain invalid or out of range information. |