Ford Ecosport Owners and Service Manuals

Ford Ecosport: Supplemental Restraint System / Diagnosis and Testing - Pinpoint Test - DTC: U

Ford Ecosport 2014-2024 Service and Repair Manual / Body and Paint / Supplemental Restraint System / Diagnosis and Testing - Pinpoint Test - DTC: U

U0100:00

Normal Operation and Fault Conditions

The RCM uses information contained in messages from the PCM sent on the HS-CAN .


  DTC Fault Trigger Conditions


  DTC Description Fault Trigger Conditions
U0100:00 Lost Communication with ECM/PCM “A”: No Sub Type Information This DTC sets if the RCM does not receive an expected message from the PCM .

Possible Causes

  • Network traffic
  • PCM
  • RCM

PINPOINT TEST A: U0100:00
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.
A1 VERIFY DIAGNOSTIC SCAN TOOL COMMUNICATION WITH THE PCM (POWERTRAIN CONTROL MODULE)

  WARNING: Before beginning any service procedure in this section, refer to Safety Warnings in section 100-00 General Information. Failure to follow this instruction may result in serious personal injury.


  • REFER to: Health and Safety Precautions (100-00 General Information, Description and Operation).
  • Ignition ON.
  • Connect the diagnostic scan tool.
  • Check that a vehicle session can be established using the diagnostic scan tool.

Can a vehicle session be established?
Yes If DTC U0100:00 was retrieved from the RCM , GO to A2
No To diagnose no communication with the PCM ,

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 U0100:00 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 PCM (POWERTRAIN CONTROL MODULE) KOEO (KEY ON, ENGINE OFF) SELF-TEST
  • Using a diagnostic scan tool, perform PCM self-test.
  • Check for recorded Diagnostic Trouble Codes (DTCs) from the PCM KOEO self-test.

Is DTC P0562 or P0563 recorded?
Yes DIAGNOSE the PCM Diagnostic Trouble Codes (DTCs). Refer to the appropriate section in Group 303 for the procedure.
No If DTC U0100:00 was originally retrieved from the RCM , GO to A4

A4 RETRIEVE THE RECORDED DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE RCM (RESTRAINTS CONTROL MODULE) SELF-TEST
  • Using a diagnostic scan tool, perform RCM self-test.
  • Check for recorded Diagnostic Trouble Codes (DTCs) from the RCM self-test.

Is DTC U3003:16 or U3003:17 recorded?
Yes
No GO to A5

A5 CHECK FOR DTC (DIAGNOSTIC TROUBLE CODE) U0100:00 SET IN OTHER MODULES OTHER THAN THE RCM (RESTRAINTS CONTROL MODULE)
  • Using a diagnostic scan tool, perform self-test for all modules.

Is DTC U0100:00 set in the ABS module or BCM ?
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,
   Click here to access Guided Routine (PCM).
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) (501-20B Supplemental Restraint System, Removal and Installation).


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