Normal Operation and Fault Conditions
With the ignition ON, the FCIM sends messages to the ABS module through the GWM 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 module sets DTCs. For information on the messages sent to the ABS module by the FCIM, refer to the DESCRIPTION AND OPERATION .
PPT AS ABS MODULE DTC FAULT TRIGGER CONDITIONS
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| U0256:00 | Lost Communication With Front Controls Interface Module 'A' | Sets in continuous memory and on-demand when the ABS module is missing any of the FCIM messages. This can be due to a FCIM failure, a circuit failure on the HS-CAN or an excessive load on the network. |