Pinpoint Test Be : U0401:00
- NOTE: This DTC sets in a module that is reporting a missing or invalid message from another module on the data bus. The module that reports the fault is not the problem module. Do not install a new OCSM as part of the repair unless directed to do so in a pinpoint test.
Refer to SUPPLEMENTAL RESTRAINT SYSTEM for schematic and connector information.
Normal Operation and Fault Conditions
The OCSM receives data messages from the PCM through the GWM.
DTC Fault Trigger Conditions
DTC Description Fault Trigger Condition OCSM U0401:00 Invalid Data Received from ECM/PCM A: No Sub Type Information This DTC sets if the OCSM does not receive an expected message from the PCM. Possible Sources
- OCSM
- PCM
- 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: SRS components should only be disconnected or reconnected when instructed to do so within a pinpoint test step. Failure to follow this instruction may result in incorrect diagnosis of the SRS.
- 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.
- BE1 RETRIEVE ALL CONTINUOUS MEMORY DIAGNOSTIC TROUBLE CODES (CMDTCS) IN ALL MODULESWARNING: Before beginning any service procedure in this information, refer to Safety Warnings in General Information. Failure to follow this instruction may result in serious personal injury.
- REFER to: Pyrotechnic Device Health and Safety Precautions .
- Ignition ON.
- Using a diagnostic scan tool, perform PCM self-test.
- Record the Diagnostic Trouble Codes (DTCs) that were retrieved.
Are any PCM Diagnostic Trouble Codes (DTCs) retrieved?
Yes Refer to the appropriate Engine systems article for the procedure. 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.