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Pinpoint Test AS - DTC: B00A0:11, B00A0:12, B1123:11, B1123:12

WARNING: This page is about a different car, the 2020 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.

Refer to Supplemental Restraint System for schematic and connector information.

Normal Operation and Fault Conditions 

The BECMB provides battery voltage to the RCM and OCSM. The BECMB monitors each circuit for a short to voltage or a short to ground.

If a fault is detected, the BECMB stores the appropriate DTC in memory and sends a message to the RCM over HS-CAN1 and HS-CAN2, 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 Conditions
B00A0:11 Occupant Classification System: Circuit Short to Ground A fault is indicated when the BECMB senses a short to ground on the OCSM voltage supply circuit.
B00A0:12 Occupant Classification System: Circuit Short to Battery A fault is indicated when the BECMB senses a short to voltage on the OCSM voltage supply circuit.
B1123:11 Restraints Ignition Relay: Circuit Short to Ground A fault is indicated when the BECMB senses a short to ground on the RCM voltage supply circuit.
B1123:12 Restraints Ignition Relay: Circuit Short to Battery A fault is indicated when the BECMB senses a short to voltage on the RCM voltage supply circuit.

Possible Sources 

PINPOINT TEST A : B00A0:11, B00A0:12, B1123:11 AND B1123:12 

  1. 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.
  2. NOTE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may cause damage to the connector.
  3. NOTE: Most faults are due to connector and/or wiring concerns. Carry out a thorough inspection and verification before proceeding with the pinpoint test.
  4. 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.
  5. 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.
  6. NOTE: The SRS must be fully operational and free of faults before releasing the vehicle to the customer.

  7. A1 RETRIEVE OCSM (OCCUPANT CLASSIFICATION SYSTEM MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

    • WARNING: Before beginning any service procedure, refer to Safety Warnings. Failure to follow this instruction may result in serious personal injury.

      REFER to: Health and Safety Precautions .

    • Ignition ON.

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

    Was DTC B00A0:11, B00A0:12, B1123:11 or B1123:12 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 B00A0:11, GO to  A2 For DTC B00A0:12, GO to  A4 For DTC B1123:11, GO to  A6 For DTC B1123:12, GO to  A8
    No  This is an intermittent fault. GO to  A13

  8. A2 CHECK THE OCSM (OCCUPANT CLASSIFICATION SYSTEM MODULE) POWER SUPPLY CIRCUIT FOR A SHORT TO GROUND

    WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment.

    • Ignition OFF.

    • Disconnect BECMB C2518.

    • Disconnect OCSM C3285.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C3285-1
      GFD465490Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the resistance greater than 10, 000 ohms? 

    Yes  GO to  A3
    No  REPAIR the circuit. Refer to OEM CONNECTOR REPAIR PROCEDURES for schematic and connector information. GO to  A14

  9. A3 CHECK THE BECMB (BATTERY ENERGY CONTROL MODULE B) DTC (DIAGNOSTIC TROUBLE CODE) FOR A FAULT STATUS CHANGE FROM SHORT TO GROUND

    • Connect BECMB C2518.

    • Ignition ON.

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

    Was DTC B00A0:11 retrieved during self-test? 

    Yes  GO to  A10
    No  GO to  A12

  10. A4 CHECK THE OCSM (OCCUPANT CLASSIFICATION SYSTEM MODULE) POWER SUPPLY CIRCUIT FOR A SHORT TO VOLTAGE

    WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment.

    • Ignition OFF.

    • Disconnect BECMB C2518.

    • Disconnect OCSM C3285.

    • Ignition ON.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C3285-1
      GFD465489Courtesy 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  A14
    No  GO to  A5

  11. A5 CHECK THE BECMB (BATTERY ENERGY CONTROL MODULE B) DTC (DIAGNOSTIC TROUBLE CODE) FOR A FAULT STATUS CHANGE FROM SHORT TO VOLTAGE

    • Ignition OFF.

    • Connect BECMB C2518.

    • Ignition ON.

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

    Was DTC B00A0:12 retrieved during self-test? 

    Yes  GO to  A10
    No  GO to  A12

  12. A6 CHECK THE RCM (RESTRAINTS CONTROL MODULE) POWER SUPPLY CIRCUIT FOR A SHORT TO GROUND

    WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment.

    • Ignition OFF.

    • Disconnect BECMB C2518.

    • Disconnect RCM C310A and C310B.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C310A-19
      GFD465490Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the resistance greater than 10, 000 ohms? 

    Yes  GO to  A7
    No  REPAIR the circuit. Refer to OEM CONNECTOR REPAIR PROCEDURES for schematic and connector information. GO to  A14

  13. A7 CHECK THE BECMB (BATTERY ENERGY CONTROL MODULE B) DTC (DIAGNOSTIC TROUBLE CODE) FOR A FAULT STATUS CHANGE FROM SHORT TO GROUND

    • Connect BECMB C2518.

    • Ignition ON.

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

    Was DTC B1123:11 retrieved during self-test? 

    Yes  GO to  A10
    No  GO to  A11

  14. A8 CHECK THE RCM (RESTRAINTS CONTROL MODULE) POWER SUPPLY CIRCUIT FOR A SHORT TO VOLTAGE

    WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment.

    • Ignition OFF.

    • Disconnect BECMB C2518.

    • Disconnect RCM C310A and C310B.

    • Ignition ON.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C310A-19
      GFD465489Courtesy 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  A14
    No  GO to  A9

  15. A9 CHECK THE BECMB (BATTERY ENERGY CONTROL MODULE B) DTC (DIAGNOSTIC TROUBLE CODE) FOR A FAULT STATUS CHANGE FROM SHORT TO VOLTAGE

    • Ignition OFF.

    • Connect BECMB C2518.

    • Ignition ON.

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

    Was DTC B1123:12 retrieved during self-test? 

    Yes  GO to  A10
    No  GO to  A11

  16. A10 CONFIRM THE BECMB (BATTERY ENERGY CONTROL MODULE B) FAULT

    NOTE: Make sure all BECMB, OCSM and RCM electrical connectors are connected before carrying out the self-test. If not, Diagnostic Trouble Codes (DTCs) will be recorded and modules will be unresponsive.

    • 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 OCSM C3285 (if previously disconnected).

    • Connect RCM C310A and C310B (if previously disconnected).

    • Connect BECMB C2518 (if previously disconnected).

    • 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 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 BECMB. REFER to: Battery Energy Control Module B (BECMB) . GO to  A14
    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  A13

  17. A11 CONFIRM THE RCM (RESTRAINTS CONTROL MODULE) FAULT

    NOTE: Make sure all BECMB, OCSM and RCM electrical connectors are connected before carrying out the self-test. If not, Diagnostic Trouble Codes (DTCs) will be recorded and modules will be unresponsive.

    • 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 RCM C310A and C310B (if previously disconnected).

    • Connect BECMB C2518 (if previously disconnected).

    • 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 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) . GO to  A14
    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  A13

  18. A12 CONFIRM THE OCSM (OCCUPANT CLASSIFICATION SYSTEM MODULE) FAULT

    NOTE: Make sure all BECMB, OCSM and RCM electrical connectors are connected before carrying out the self-test. If not, Diagnostic Trouble Codes (DTCs) will be recorded and modules will be unresponsive.

    • 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 OCSM C3285 (if previously disconnected).

    • Connect BECMB C2518 (if previously disconnected).

    • 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 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 OCS sensor. REFER to: Occupant Classification System (OCS) Sensor - Vehicles With: Multi-Contour Seats . REFER to: Occupant Classification System (OCS) Sensor - Vehicles Without: Multi-Contour Seats . GO to  A14
    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  A13

  19. A13 CHECK FOR AN INTERMITTENT FAULT

    • Ignition OFF.

    • For DTC B00A0:11 or B00A0:12, disconnect OCSM C3285.

    • Disconnect BECMB C2518.

    • For DTC B1123:11 or B1123:12, disconnect RCM C310A and C310B.

      • 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.

    • For DTC B00A0:11 or B00A0:12, connect OCSM C3285.

    • For DTC B1123:11 or B1123:12, connect RCM C310A and C310B.

    • Connect BECMB C2518.

    • Ignition ON.

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

    Was DTC B00A0:11, B00A0:12, B1123:11 or B1123:12 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. For DTC B00A0:11, GO to  A2 For DTC B00A0:12, GO to  A4 For DTC B1123:11, GO to  A6 For DTC B1123:12, GO to  A8
    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  A14

  20. A14 CHECK FOR ADDITIONAL SRS (SUPPLEMENTAL RESTRAINT SYSTEM) DIAGNOSTIC TROUBLE CODES (DTCS)

    • Ignition OFF.

    • Reconnect all SRS components (if previously disconnected).

    • Ignition ON.

    • NOTE: When selecting Restraints from the Self Test menu, Diagnostic Trouble Codes (DTCs) are retrieved from the RCM, OCSM and BECMB.

      Using a diagnostic scan tool, perform

      Restraints  self-test.

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

    Yes  Do not clear any Diagnostic Trouble Codes (DTCs) until all Diagnostic Trouble Codes (DTCs) have been resolved. REFER to: Airbag Supplemental Restraint System (SRS) .
    No  The repair is complete. RETURN the vehicle to the customer.
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