Pinpoint Test BQ: Abs (Anti-Lock Brake System) Module Communication Concern With The IPMA (Image Processing Module A): Notes
WARNING: This page is about a different car, the 2021 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.
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 .
The IPMA is part of the Advanced Driver Assistance System (ADAS).
With the ignition ON, the IPMA sends messages to the ABS module the over the FD-CAN. If the ABS module does not receive these messages within a certain time frame, the module sets Diagnostic Trouble Codes (DTCs). This can be due to an IPMA failure, a circuit failure on the network or an excessive load on the network.
DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Condition |
|---|---|---|
| ABS U023A:00 | Lost Communication With Image Processing Module A: No Sub Type Information | Sets when the ABS module does not receive messages from the IPMA. |
| ABS U053B:00 | Invalid Data Received From Image Processing Module A: No Sub Type Information | Sets when the counter signal value in the adaptive cruise control data message from the IPMA does not increase. |
Possible Sources
- Wiring, terminals or connectors
- Network communication concern
- IPMA
- ABS module