Pinpoint Test BP: Abs (Anti-Lock Brake System) Module Communication Concern With The GWM (Gateway Module A)
Refer to Vehicle Dynamic Systems for schematic and connector information.
Normal Operation and Fault Conditions
REFER to: Anti-Lock Brake System (ABS) and Stability Control - System Operation and Component Description .
With the ignition ON, the GWM sends messages to the ABS module over the FD-CAN. If the ABS module does not receive these messages within a certain time frame (usually less than 1 second), the ABS module sets Diagnostic Trouble Codes (DTCs). This can be due to a GWM failure, a circuit failure on the FD-CAN or an excessive load on the network.
DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Condition |
|---|---|---|
| ABS U0146:00 | Lost Communication With Serial Data Gateway 'A': No Sub Type Information | This DTC sets in the ABS module if the IPC messages from the GWM are missing for more than 5 seconds. |
Possible Sources
- Network communication concern
- GWM
Pinpoint Tests BP: ABS Module Communication Concern With The GWM