Pinpoint Test As: Abs Module Communication Concern With FCIM
Normal Operation and Fault Conditions
With the ignition ON, the FCIM sends messages to the GWM over the MS-CAN, The GWM relays these messages 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 FCIM 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 FCIM, refer to the Network Message Chart .
DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Condition |
|---|---|---|
| ABS U0256:00 | Lost Communication With Front Controls Interface Module "A": No Sub Type Information | This DTC sets when the ABS module does not receive any messages from the FCIM within the allowed time. |
| ABS U0557:00 | Invalid Data Received From Front Controls Interface Module "A": No Sub Type Information | This DTC sets when the ABS module receives messages from the FCIM, but the messages contain invalid data. |
Possible Sources
- Network communication concern
- GWM
- FCIM
PINPOINT TESTS AS: ABS MODULE COMMUNICATION CONCERN WITH FCIM