Pinpoint Test BR: Abs Module Communication Concern With CHCM
WARNING: This page is about a different car, the 2023 Ford Bronco. 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 CHCM sends messages to the ABS module over the FD-CAN. 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 CHCM 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 CHCM, refer to Network Message Chart , Description and Operation in the Service Articles.
DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Condition |
|---|---|---|
| ABS U012A:00 | Lost Communication with Chassis Control Module 'A': No Sub Type Information | This DTC sets when the ABS module does not receive any messages from the CHCM within the allowed time. |
Possible Sources
- Network communication concern
- CHCM