Pinpoint Test AQ: U0028:08, U0028:88, U2101:00
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.
- Normal Operation and Fault Conditions
DTC Fault Trigger Conditions
DTC Description Fault Trigger Condition RCM U0028:08 Vehicle Communication Bus A: Bus Signal/Message Failures This DTC sets due to an internal fault with the RCMCAN. RCM U0028:88 Vehicle Communication Bus A: Bus Off This DTC sets due to an internal fault with the RCMCAN. RCM U2101:00 Control Module Configuration Incompatible: No Sub Type Information This DTC sets due to an internal fault with the RCM. Possible Sources
- Incomplete or improper PMI
- RCM
- WARNING: Do not handle, move or change the original horizontal mounting position of the Restraints Control Module (RCM) while the Restraints Control Module (RCM) is connected and the ignition switch is ON. Failure to follow this instruction may result in the accidental deployment of the Safety Canopy® and cause serious personal injury or death.
- NOTE: Always make sure the correct SRS component is being installed. Parts released for other vehicles may not be compatible even if they appear physically similar. Check the part number listed in the Ford parts catalog to make sure the correct component is being installed. If an incorrect SRS component is installed, Diagnostic Trouble Codes (DTCs) may set.
- NOTE: The SRS must be fully operational and free of faults before releasing the vehicle to the customer.
- AQ1 CARRY OUT PMI (PROGRAMMABLE MODULE INSTALLATION)
- CARRY OUT PMI using As-Built data.
- Using a diagnostic scan tool, clear all Diagnostic Trouble Codes (DTCs).
- Using a diagnostic scan tool, perform the RCM self-test.
Did the DTC return?
Yes INSTALL a new RCM. Use As-Built data when carrying out PMI for this DTC REFER to: Restraints Control Module (RCM) . No The system is operating correctly at this time. The DTC may have been set due to high network traffic or an intermittent fault condition.