LEMON Manuals: Even more car manuals for everyone
Home >> Ford >> 2023 >> Mustang Mach-E Select, RWD >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Supplemental Restraint System - Pinpoint Tests BA - BS >> Pinpoint Test Bl: B1142:62, B11D9:13, B13BF:14

Pinpoint Test Bl: B1142:62, B11D9:13, B13BF:14

  1. Refer to SUPPLEMENTAL RESTRAINT SYSTEM for schematic and connector information.

    Normal Operation and Fault Conditions 

    The BECMB provides battery voltage to the RCM, OCSM, and PAD Indicator. The BECMB compares HS-CAN1 messages to ignition voltage inputs. If the status of the HS-CAN1 message and the voltage input do not match, the BECMB sets a DTC.

    If a fault is detected, the BECMB stores the appropriate DTC in memory and sends a message to the RCM through the GWM and, indicating that a BECMB fault is present. Upon receipt of this message, the RCM sets DTC U0413:92 and sends a message to the IPC to illuminate the airbag warning indicator.

    DTC Fault Trigger Conditions 

    DTC Description Fault Trigger Condition
    BECMB B1142:62 Ignition Status 1: Signal Compare Failure A fault is indicated when the status of the hard-wired ignition input to the BECMB does not match the ignition status reported on the HS-CAN1.
    BECMB B11D9:13 Vehicle Battery: Circuit Open A fault is indicated when the voltage on the battery input circuit to the BECMB is less than a pre-determined threshold.
    BECMB B13BF:14 Run/Start Input: Circuit Short To Ground Or Open A fault is indicated when the hard-wired ignition input to the BECMB is inactive, but the BECMB receives an ignition status on the HS-CAN1 that contradicts the hard-wired input status.

    Possible Sources 

    • BCM fuses 10 (10A) and 3 (10A)
    • Wiring, terminals or connectors
    • BECMB

    WARNING: Incorrect repair techniques or actions can cause an accidental Supplemental Restraint System (SRS) deployment. Never compromise or depart from these instructions. Failure to precisely follow all instructions could result in serious personal injury from an accidental deployment.
    NOTE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may cause damage to the connector.
    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.

  2. BL1 RETRIEVE BECMB (BATTERY ENERGY CONTROL MODULE B) DIAGNOSTIC TROUBLE CODES (DTCS)

    WARNING: Before beginning any service procedure, 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 BECMB self-test.

    Was DTC B1142:62, B11D9:13 or B13BF:14 retrieved during self-test? 

    Yes  This fault cannot be cleared until it is corrected and the DTC is no longer retrieved during the self-test.For DTC B11D9:13, GO to BL2 For DTC B1142:62 or B13BF:14, GO to BL3 
    No  The fault is intermittent. GO to BL7 

  3. BL2 CHECK THE BECMB (BATTERY ENERGY CONTROL MODULE B) BATTERY INPUT CIRCUIT FOR VOLTAGE

    • Ignition OFF.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C3518 Pin 11
      GFD769508Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the voltage greater than 11 volts? 

    Yes  GO to BL3 
    No  VERIFY that BCM fuse 10 (10A) is OK. If OK, REPAIR the open circuit. If not OK, REFER to OEM_ELECTRICAL_WIRING_DIAGRAM_INTRODUCTION to identify the possible causes of the circuit short. Refer to OEM_CONNECTOR_REPAIR_PROCEDURES for schematic and connector information. GO to BL8 

  4. BL3 RETRIEVE BCM (BODY CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

    • Using a diagnostic scan tool, perform BCM self-test.

    Are any ignition-related BCM Diagnostic Trouble Codes (DTCs) retrieved during self-test? 

    Yes  DIAGNOSE and REPAIR the BCM Diagnostic Trouble Codes (DTCs). REFER to: Body Control Module (BCM) . CLEAR the BECMB Diagnostic Trouble Codes (DTCs) and REPEAT the BECMB self-test. If DTC B1142:62 or B13BF:14 is retrieved during self-test, GO to BL4 
    No  If the BCM does not respond to the scan tool, REFER to: Controller Area Network (CAN) Module Communications Network . GO to BL4 

  5. BL4 CHECK THE BECMB (BATTERY ENERGY CONTROL MODULE B) IGNITION INPUT CIRCUIT FOR VOLTAGE

    • Ignition OFF.

    • Ignition ON.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C3518 Pin 4
      GFD769508Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the voltage greater than 11 volts? 

    Yes  GO to BL5 
    No  VERIFY that BCM fuse 3 (10A) is OK. If OK, REPAIR the open circuit. If not OK, REFER to OEM_ELECTRICAL_WIRING_DIAGRAM_INTRODUCTION to identify the possible causes of the circuit short. Refer to OEM_CONNECTOR_REPAIR_PROCEDURES for schematic and connector information. GO to BL8 

  6. BL5 CHECK THE BECMB (BATTERY ENERGY CONTROL MODULE B) IGNITION INPUT CIRCUIT FOR A SHORT TO VOLTAGE

    • Ignition OFF.

    • Remove BCM fuse 3 (10A).

    • Ignition ON.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C3518 Pin 4
      GFD769508Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is any voltage present? 

    Yes  REPAIR the circuit. Refer to OEM_CONNECTOR_REPAIR_PROCEDURES for schematic and connector information. GO to BL8 
    No  TURN the ignition OFF. INSTALL BCM fuse 3 (10A). GO to BL6 

  7. BL6 CONFIRM THE BECMB (BATTERY ENERGY CONTROL MODULE B) FAULT

    NOTE: Make sure all OCS components, restraint system sensor electrical connectors and the RCM electrical connectors are connected before carrying out the self-test. If not, Diagnostic Trouble Codes (DTCs) will be recorded.

    • Ignition OFF.

    • Prior to reconnecting any previously disconnected SRS component:

      • inspect connector(s) (including any inline connectors) for pushed-out, loose or spread terminals and loose or frayed wire connections at terminals.
      • inspect wire harness for any damage, pinched, cut or pierced wires.
      • repair any concerns found. Refer to OEM_CONNECTOR_REPAIR_PROCEDURES for schematic and connector information.

    • Connect all  previously disconnected SRS components.

    • Ignition ON.

    • Using a diagnostic scan tool, perform BECMB self-test.

    Was the original DTC retrieved during self-test? 

    Yes  CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions.If no service articles address this concern, INSTALL a new BECMB. REFER to: Battery Energy Control Module B (BECMB) .
    No  In the process of diagnosing the fault, the fault condition has become intermittent. Do not install any new SRS components at this time. SRS components should only be installed when directed to do so in the pinpoint test. GO to BL7 

  8. BL7 CHECK FOR AN INTERMITTENT FAULT

    • Ignition OFF.

    • Disconnect BECMB C3518.

      • inspect connector(s) (including any inline connectors) for loose or spread terminals and loose or frayed wire connections at terminals.
      • inspect wire harness for any damage, pinched, cut or pierced wires.
      • repair any concerns found. Refer to OEM_CONNECTOR_REPAIR_PROCEDURES for schematic and connector information.

    • Ignition ON.

    • Using a diagnostic scan tool, perform BECMB self-test to retrieve Diagnostic Trouble Codes (DTCs).

    Was DTC B1142:62 or B13BF:14 retrieved during self-test? 

    Yes  The fault condition is now present. This fault cannot be cleared until it is corrected and the DTC is no longer retrieved during the self-test. GO to BL3 
    No  CHECK for causes of the intermittent fault. ATTEMPT to recreate the hard fault by flexing the wire harness and cycling the ignition frequently. ACTIVATE other system in the same wire harness. Do not install any new SRS components at this time. Only install SRS components when directed to do so in the pinpoint test. REPAIR any intermittent concerns found. GO to BL8 

  9. BL8 CHECK FOR ADDITIONAL SRS (SUPPLEMENTAL RESTRAINT SYSTEM) DIAGNOSTIC TROUBLE CODES (DTCS)

    • Ignition OFF.

    • Prior to reconnecting any previously disconnected SRS component:

      • inspect connector(s) (including any inline connectors) for pushed-out, loose or spread terminals and loose or frayed wire connections at terminals.
      • inspect wiring harness for any damaged, pinched, cut or pierced wires.
      • inspect RCM C310A and C310B Connector Position Assurance (CPA) lever/lock for correct operation.
      • repair any concerns found. Refer to OEM_CONNECTOR_REPAIR_PROCEDURES for schematic and connector information.

    • Connect all  previously disconnected SRS components.

    • Ignition ON.

    • NOTE: When selecting Restraints from the Self Test menu, DTCs are retrieved from the RCM, OCSM and, if equipped, BECMB.

      Using a diagnostic scan tool, perform

      Restraints  self-test.

    Are any RCM, OCSM and/or BECMB Diagnostic Trouble Codes (DTCs) retrieved during self-test? 

    Yes  Do not clear any Diagnostic Trouble Codes (DTCs) until all Diagnostic Trouble Codes (DTCs) have been resolved. DIAGNOSE and REPAIR the Diagnostic Trouble Codes (DTCs). REFER to Diagnostic Trouble Code (DTC) Chart
    No  The repair is complete. RETURN the vehicle to the customer.
scientia non olet · About LEMON Manuals