Pinpoint Test Ac: Invalid Or Missing Can (Controller Area Network) Data From The RCM (Restraints Control Module)

WARNING: This page is about a different car, the 2022 Ford Transit-350 HD, 2022 Ford Transit-350, 2022 Ford Transit-250, 2022 Ford Transit-150, and 2022 Ford E-Transit. However, it is still accessible from the selected car via links, so may be relevant.

Refer to Horn/Cigar Lighter for schematic and connector information.

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
ABS U0452:00	Invalid Data Received From Restraints Control Module: No Sub Type Information	This DTC sets when the ABS module receives the following messages from the RCM with invalid data; RCM serial number, impact event status, lateral acceleration, longitudinal acceleration and sensor cluster state.
ABS U0452:86	Invalid Data Received From Restraints Control Module: Signal Invalid	This DTC sets when the ABS module receives the yaw rate messages from the RCM, but the messages contain invalid data.

Possible Sources

Network communication concern
GWM
RCM

AC1 CHECK DATA FROM RCM (RESTRAINTS CONTROL MODULE)

A DTC has been set which has the following description:
- Invalid Data Received From the RCM.

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 RCM. Check the CAN bus and terminating resistor (60 ohm) at the OBD connector. Check CAN bus circuit. Check for other failures in the RCM. 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.