Pinpoint Test BH: Abs (Anti-Lock Brake System) Module Communication Concern With The RCM (Restraints Control Module): Notes

Refer to VEHICLE DYNAMIC SYSTEMS for schematic and connector information.

Normal Operation and Fault Conditions

With the ignition ON, the RCM sends messages to the GWM over the HS-CAN2, the GWM relays these messages to the ABS module over the FD-CAN. If the ABS module does not receive these messages within a certain time frame, the ABS module sets a DTC. For information on the messages sent to the ABS module by the RCM, REFER to: Anti-Lock Brake System (ABS) and Stability Control - System Operation and Component Description . .

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
ABS C0061:28	Lateral Acceleration Sensor: Signal Bias Level Out Of Range/Zero Adjustment Failure	Sets if the absolute value of the longitudinal acceleration message from the RCM is outside of the maximum allowable range.
ABS C0061:64	Lateral Acceleration Sensor: Signal Plausibility Failure	The ABS module creates a reference value based on all other available sensor signals and compares this value. If the 2 values differ by more than the predetermined value, this DTC is set.
ABS C0062:64	Longitudinal Acceleration Sensor: Signal Plausibility Failure	Sets if the sensor signal does not match the other stability sensor signals (steering angle, yaw rate, longitudinal acceleration or lateral acceleration).
ABS C0063:28	Yaw Rate Sensor: Signal Bias Level Out Of Range/Zero Adjustment Failure	Sets if the absolute value of the longitudinal acceleration message from the RCM is outside of the maximum allowable range.
ABS C0063:64	Yaw Rate Sensor: Signal Plausibility Failure	Sets if the sensor signal does not match the other stability sensor signals (steering angle, yaw rate, longitudinal acceleration or lateral acceleration).
ABS C0064:28	Roll Rate Sensor: Signal Bias Level Out Of Range/Zero Adjustment Failure	Sets if the sensor signal does not match the other stability sensor signals (steering angle, yaw rate, longitudinal acceleration or lateral acceleration).
ABS C0064:64	Roll Rate Sensor: Signal Plausibility Failure	Sets if the sensor signal does not match the other stability sensor signals (steering angle, yaw rate, longitudinal acceleration or lateral acceleration).
ABS U0151:00	Lost Communication With Restraints Control Module: No Sub Type Information	Sets in the ABS module if the time allotted for stability sensor messages expires before the ABS module receives any stability sensor messages.
ABS U0452:02	Invalid Data Received From Restraints Control Module: General Signal Failure	Sets if the yaw rate, roll rate, longitudinal acceleration or lateral acceleration messages from the RCM are invalid.
ABS U0452:41	Invalid Data Received From Restraints Control Module: General Checksum Failure	Sets if the yaw rate, roll rate, longitudinal acceleration or lateral acceleration messages from the RCM are not received.
ABS U0452:86	Invalid Data Received From Restraints Control Module: Signal Invalid	Sets if the yaw rate, roll rate, longitudinal acceleration or lateral acceleration counter signal message from the RCM does not update.

Possible Sources

Network communication concern
RCM
ABS module