Pinpoint Test U: Abs (Anti-Lock Brake System) Module Communication Concern With The IPMA (Image Processing Module A)
- Refer to Horn/Cigar Lighter
for schematic and connector information.
Normal Operation and Fault Conditions
The IPMA is an internal component of the Advanced Driver Assistance Systems (ADAS) module.
With the ignition ON, the Advanced Driver Assistance Systems (ADAS) module 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 Advanced Driver Assistance Systems (ADAS) module 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 IPMA and Advanced Driver Assistance Systems (ADAS) module, refer to Network Message Charts .
DTC Fault Trigger Conditions
DTC Description Fault Trigger Condition ABS U023A:00 Lost Communication With Image Processing Module A: No Sub Type Information This DTC sets when the ABS module does not receive any messages from the IPMA within the allowed time. Possible Sources
- Network communication concern
- IPMA - part of the Advanced Driver Assistance Systems (ADAS) module
- U1 CHECK DATA FROM IPMA (IMAGE PROCESSING MODULE A)
- A DTC has been set which has the following description:
- Invalid Data Received From the IPMA.
- Ignition ON.
- Clear the ABS DTCs.
- Ignition OFF.
- Ignition ON.
- Wait at least 1 minute.
- Using a diagnostic scan tool, retrieve all DTCs from the ABS module. NOTE: DTCs may be displayed from previous diagnostic actions.
Did the DTCs return?
Yes Invalid or Missing CAN Data from the IPMA. Check the CAN bus and terminating resistor (60 ohm) at the OBD connector. Check CAN bus circuit. Check for other failures in the IPMA. Notice: Do not replace the ABS module. No Return the vehicle to the customer. If the fault reoccurs inform the customer to note any relevant conditions at the time of the fault. The test is now exiting. - A DTC has been set which has the following description: