Pinpoint Test At: -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 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 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 U2108:68	Adaptive Cruise Control: Event Information	Sets when the ABS module does not receive any cruise control messages from the PCM.
ABS U2107:68	Collision Mitigation By Braking: Event Information	Sets when the ABS module does not receive any cruise control messages collision mitigation information.
ABS U053B:41	Invalid Data Received From Image Processing Module A: General Checksum Failure	Sets when the ABS module detects a checksum error from IPMA
ABS U053B:82	Invalid Data Received From Image Processing Module A: Alive/Sequence Counter Incorrect/Not Updated	Sets if IPMA counter message indicates an error.
ABS U053B:83	Invalid Data Received From Image Processing Module A: Value Of Signal Protection Calculation Incorrect	Sets when ABS module receives messages from IPMA is invalid

Possible Causes

Wiring, terminals or connectors
Network communication concern
IPMA - part of the Advanced Driver Assistance Systems (ADAS) module

AT1 CHECK CAN (CONTROLLER AREA NETWORK) DATA

A DTC has been set which has the following description:
- Invalid Data Received FromIPMA Control Module

Ignition ON.

Clear the ABSDTC s.

Ignition OFF.

Ignition ON.

Wait at least 1 minute.

Using a diagnostic scan tool, retrieve all DTC s from the ABS module.
NOTE: DTC s may be displayed from previous diagnostic actions.

Did the DTC s 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 theIPMA Control Module.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.