Pinpoint Test V - DTC: U0140:00
WARNING: This page is about a different car, the 2018 Ford EcoSport. However, it is still accessible from the selected car via links, so may be relevant.
Normal Operation and Fault Conditions
The RCM uses information contained in messages from the BCM sent on the HS-CAN.
DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| U0140:00 | Lost Communication with Body Control Module: No Sub Type Information | This DTC sets if the RCM does not receive an expected message from the BCM for 6 seconds. |
Possible Causes
- Network traffic
- BCM
- RCM
PINPOINT TEST A : U0140:00
- NOTE: Most faults are due to connector and/or wiring concerns. Carry out a thorough inspection and verification before proceeding with the pinpoint test.
- NOTE: Only disconnect or reconnect SRS components 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.
- A1 CHECK THE COMMUNICATION NETWORK
-
WARNING: WARNING: 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, carry out a network test.
Does the BCM pass the network test?
Yes GO to A2 No To diagnose no communication with the BCM, -
- A2 CHECK THE RCM (RESTRAINTS CONTROL MODULE) CONTINUOUS MEMORY DIAGNOSTIC TROUBLE CODES (CMDTCS)
- Using a diagnostic scan tool, perform RCM self-test.
- Using a diagnostic scan tool, clear RCM Diagnostic Trouble Codes (DTCs).
- Wait 10 seconds.
- Using a diagnostic scan tool, perform RCM self-test.
Is DTC U0140:00 retrieved again?
Yes GO to A3 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. - A3 RETRIEVE THE RECORDED DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE RCM (RESTRAINTS CONTROL MODULE) SELF-TEST
- Check the recorded Diagnostic Trouble Codes (DTCs) from the RCM self-test.
Is DTC U3003:16 or U3003:17 recorded?
Yes No GO to A4 - A4 RETRIEVE THE RECORDED DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE BCM (BODY CONTROL MODULE) SELF-TEST
- Using a diagnostic scan tool, perform BCM self-test.
- Check for recorded Diagnostic Trouble Codes (DTCs) from the BCM self-test.
Is DTC U3003:16 or U3003:17 recorded?
Yes No GO to A5 - A5 CHECK FOR DTC (DIAGNOSTIC TROUBLE CODE) U0140:00 SET IN OTHER MODULES
- Using a diagnostic scan tool, perform self-test for all modules.
Is DTC U0140:00 set in the ABS Module or in the IPC?
Yes CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, Refer to BCM GUIDED ROUTINE TESTING No CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new RCM. REFER to: Restraints Control Module (RCM) .