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Pinpoint Test M: B0072:11, B0072:12, B0072:13, B0072:1A

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

    Normal Operation and Fault Conditions 

    REFER to: Airbag and Seatbelt Pretensioner Supplemental Restraint System (SRS) - System Operation and Component Description .

    The RCM continuously monitors the passenger seatbelt anchor pretensioner circuits for the following faults:

    • Resistance out of range
    • Unexpected voltage
    • Short to ground
    • Faulted passenger seatbelt anchor pretensioner

    If a fault is detected, the RCM stores DTC B0072:11, B0072:12, B0072:13 or B0072:1A in memory and sends a message to the IPC to illuminate the airbag warning indicator.

    The RCM analyzes the deployment loop resistance to determine if a fault exists. The value displayed in the PID is the deployment loop resistance measured by the RCM. If the value displayed is lower or higher than the desired range ( refer to diagram below), the RCM can set a DTC. As the deployment loop resistance drifts farther outside the desired range, the chance for a DTC increases. Small variations in resistance can occur due to the effect of road vibrations on terminal fit. Crimps and terminals can be affected by stress and harness movement and can cause an increase in resistance due to wire strain. These variables can result in an intermittent fault. For this reason, the test requires the PID value to be within the desired range before the fault is considered repaired, regardless if the module is reporting an on-demand DTC at the time of diagnosis. Following this direction helps make sure that minor changes in resistance do not create a repeat concern. This test uses process of elimination to diagnose each part of the deployment loop circuit including:

    • Wiring
    • Connections
    • Passenger seatbelt anchor pretensioner
    • RCM

    GFD562393Courtesy of FORD MOTOR COMPANY

    • 1 - May set DTC
    • 2 - Desired range

    DTC Fault Trigger Conditions 

    DTC Description Fault Trigger Condition
    RCM B0072:11 Passenger Seatbelt Pretensioner "A" Deployment Control: Circuit Short To Ground A fault is indicated when the RCM senses a short to ground on either passenger seatbelt anchor pretensioner circuit for more than 6 seconds.
    RCM B0072:12 Passenger Seatbelt Pretensioner "A" Deployment Control: Circuit Short To Battery A fault is indicated when the RCM senses a short to voltage on either passenger seatbelt anchor pretensioner circuit for more than 6 seconds.
    RCM B0072:13 Passenger Seatbelt Pretensioner "A" Deployment Control: Circuit Open A fault is indicated when the RCM measures more than the desired resistance between the passenger seatbelt anchor pretensioner circuits for more than 6 seconds.
    RCM B0072:1A Passenger Seatbelt Pretensioner "A" Deployment Control: Circuit Resistance Below Threshold A fault is indicated when the RCM measures less than the desired resistance between the passenger seatbelt anchor pretensioner circuits for more than 6 seconds.

    Possible Sources 

    • Wiring, terminals or connectors
    • Passenger seatbelt anchor pretensioner
    • RCM

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

  8. M1 RETRIEVE RCM (RESTRAINTS CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

    • WARNING: Before beginning any service procedure In this article, 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 RCM self-test.

    Was DTC B0072:11, B0072:12, B0072:13 and B0072:1A retrieved on-demand during self-test? 

    Yes  This fault cannot be cleared until it is corrected and the DTC is no longer retrieved on-demand during self-test. If DTC U3003:16 or U3003:17 is also retrieved on-demand, GO to Pinpoint Test BD If DTC U3003:16 or U3003:17 is not retrieved on-demand during self-test, DIAGNOSE the passenger seatbelt anchor pretensioner Diagnostic Trouble Codes (DTCs). For DTC B0072:13 or B0072:1A, GO to  M2 For DTC B0072:11, GO to  M8 For DTC B0072:12, GO to  M10
    No  This is an intermittent fault when present as a CMDTC only. If DTC U3003:16 or U3003:17 is also retrieved on-demand, GO to Pinpoint Test BD If DTC U3003:16 or U3003:17 is not retrieved on-demand during self-test, DIAGNOSE the passenger seatbelt anchor pretensioner Continuous Memory Diagnostic Trouble Codes (CMDTCs). For DTC B0072:13 or B0072:1A, GO to  M13 For DTC B0072:11, GO to  M14 For DTC B0072:12, GO to  M15

  9. M2 CHECK THE PASSENGER SEATBELT ANCHOR PRETENSIONER DEPLOYMENT CONTROL (DEPLOY_30_RES) PID (PARAMETER IDENTIFICATION)

    • Access the RCM and monitor the DEPLOY_30_RES (mOhm) PID

    • Monitor and record the value of the PID.

    Does the PID value read between 1.7 and 2.98 ohms? 

    Yes  GO to  M12
    No  GO to  M3

  10. M3 CHECK THE PASSENGER SEATBELT ANCHOR PRETENSIONER DEPLOYMENT CONTROL (DEPLOY_30_RES) PID (PARAMETER IDENTIFICATION) WHILE CARRYING OUT THE HARNESS TEST

    • Access the RCM and monitor the DEPLOY_30_RES (mOhm) PID

    • While monitoring the PID, carry out the harness test of the passenger seatbelt anchor pretensioner circuits and accessible connectors (including any inline connectors) by wiggling and flexing the wire harness and connectors frequently.

    Does the PID value stay between 1.7 and 2.98 ohms while carrying out the wiggle test? 

    Yes  DEPOWER the SRS and REPAIR the connector, terminals or wire harness as needed. REFER to: Supplemental Restraint System (SRS) Depowering . Refer to Wiring Diagrams OEM CONNECTOR REPAIR PROCEDURES for schematic and connector information. GO to  M17
    No  For PID value less than 1.7 ohms, GO to  M4 For PID value greater than 2.98 ohms, GO to  M6

  11. M4 CHECK THE PASSENGER SEATBELT ANCHOR PRETENSIONER DEPLOYMENT CONTROL DTC (DIAGNOSTIC TROUBLE CODE) FOR A FAULT STATUS CHANGE (LOW RESISTANCE INDICATED)

    NOTE: This pinpoint test step attempts to change the fault reported by the RCM by inducing a different fault condition. If the reported fault changes, this indicates the RCM is functioning correctly and is not the source of the fault.

    • Ignition OFF.

    • Disconnect Passenger Seatbelt Anchor Pretensioner C3066 (Regular or SuperCrew).

    • Disconnect Passenger Seatbelt Anchor Pretensioner C857 (SuperCab).

    • Ignition ON.

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

    • DIAGNOSTIC TIP:  When viewing Diagnostic Trouble Codes (DTCs) with the passenger seatbelt anchor pretensioner disconnected, an open circuit fault is normally retrieved.

    Did the on-demand DTC change from B0072:1A to B0072:13? 

    Yes  GO to  M11
    No  GO to  M5

  12. M5 CHECK FOR A SHORT BETWEEN THE PASSENGER SEATBELT ANCHOR PRETENSIONER CIRCUITS

    • Ignition OFF.

    • Disconnect RCM C310A and C310B.

    • For Regular or SuperCrew cabs, measure:
      Positive Lead Measurement / Action Negative Lead
      C3066-1
      GFD562389Courtesy of FORD MOTOR COMPANY
      		 C3066-2

    • With SuperCab, measure:
      Positive Lead Measurement / Action Negative Lead
      C857-1
      GFD562389Courtesy of FORD MOTOR COMPANY
      		 C857-2

    Is the resistance greater than 10, 000 ohms? 

    Yes  GO to  M12
    No  REPAIR the circuit(s). Refer to Wiring Diagrams OEM CONNECTOR REPAIR PROCEDURES for schematic and connector information. GO to  M17

  13. M6 CHECK THE PASSENGER SEATBELT ANCHOR PRETENSIONER CIRCUITS FOR AN OPEN

    • Ignition OFF.

    • Disconnect Passenger Seatbelt Anchor Pretensioner C3066 (Regular or SuperCrew).

    • Disconnect Passenger Seatbelt Anchor Pretensioner C857 (SuperCab).

    • Disconnect RCM C310A and C310B.

    • For Regular or SuperCrew cabs, measure:
      Positive Lead Measurement / Action Negative Lead
      C310B-4
      GFD562389Courtesy of FORD MOTOR COMPANY
      		 C3066-1
      C310B-3
      GFD562389Courtesy of FORD MOTOR COMPANY
      		 C3066-2

    • With SuperCab, measure:
      Positive Lead Measurement / Action Negative Lead
      C310B-4
      GFD562389Courtesy of FORD MOTOR COMPANY
      		 C857-1
      C310B-3
      GFD562389Courtesy of FORD MOTOR COMPANY
      		 C857-2

    Are the resistances less than 0.5 ohm? 

    Yes  GO to  M7
    No  REPAIR the circuits. Refer to Wiring Diagrams OEM CONNECTOR REPAIR PROCEDURES for schematic and connector information. GO to  M17

  14. M7 CHECK THE PASSENGER SEATBELT ANCHOR PRETENSIONER DEPLOYMENT CONTROL DTC (DIAGNOSTIC TROUBLE CODE) FOR A FAULT STATUS CHANGE (OPEN INDICATED)

    NOTE: This pinpoint test step attempts to change the fault reported by the RCM by inducing a different fault condition. If the reported fault changes, this indicates the RCM is functioning correctly and is not the source of the fault.

    • Connect RCM C310A and C310B.

    • For Regular or SuperCrew, connect a fused jumper wire:
      Lead 1 Measurement / Action Lead 2
      C3066-1
      GFD562391Courtesy of FORD MOTOR COMPANY
      		 C3066-2

    • With SuperCab, connect a fused jumper wire:
      Lead 1 Measurement / Action Lead 2
      C857-1
      GFD562391Courtesy of FORD MOTOR COMPANY
      		 C857-2

    • Ignition ON.

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

    • DIAGNOSTIC TIP:  When viewing Diagnostic Trouble Codes (DTCs) with the passenger seatbelt anchor pretensioner circuits shorted together, a low resistance fault is normally retrieved.

    Did the on-demand DTC change from B0072:13 to B0072:1A? 

    Yes  REMOVE the fused jumper wire and GO to  M11
    No  REMOVE the fused jumper wire and GO to  M12

  15. M8 CHECK THE PASSENGER SEATBELT ANCHOR PRETENSIONER DEPLOYMENT CONTROL DTC (DIAGNOSTIC TROUBLE CODE) FOR A FAULT STATUS CHANGE (SHORT TO GROUND INDICATED)

    NOTE: This pinpoint test step attempts to change the fault reported by the RCM by inducing a different fault condition. If the reported fault changes, this indicates the RCM is functioning correctly and is not the source of the fault.

    • Ignition OFF.

    • Disconnect Passenger Seatbelt Anchor Pretensioner C3066 (Regular or SuperCrew).

    • Disconnect Passenger Seatbelt Anchor Pretensioner C857 (SuperCab).

    • Ignition ON.

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

    • DIAGNOSTIC TIP:  When viewing Diagnostic Trouble Codes (DTCs) with the passenger seatbelt anchor pretensioner disconnected, an open circuit fault is normally retrieved.

    Did the on-demand DTC change from B0072:11 to B0072:13? 

    Yes  GO to  M11
    No  GO to  M9

  16. M9 CHECK THE PASSENGER SEATBELT ANCHOR PRETENSIONER CIRCUITS FOR A SHORT TO GROUND

    • Ignition OFF.

    • Disconnect RCM C310A and C310B.

    • For Regular or SuperCrew cabs, measure:
      Positive Lead Measurement / Action Negative Lead
      C3066-1
      GFD562389Courtesy of FORD MOTOR COMPANY
      		 Ground
      C3066-2
      GFD562389Courtesy of FORD MOTOR COMPANY
      		 Ground

    • With SuperCab, measure:
      Positive Lead Measurement / Action Negative Lead
      C857-1
      GFD562389Courtesy of FORD MOTOR COMPANY
      		 Ground
      C857-2
      GFD562389Courtesy of FORD MOTOR COMPANY
      		 Ground

    Are the resistances greater than 10, 000 ohms? 

    Yes  GO to  M12
    No  REPAIR the circuit(s). Refer to Wiring Diagrams OEM CONNECTOR REPAIR PROCEDURES for schematic and connector information. GO to  M17

  17. M10 CHECK THE PASSENGER SEATBELT ANCHOR PRETENSIONER CIRCUITS FOR A SHORT TO VOLTAGE

    • Ignition OFF.

    • Disconnect Passenger Seatbelt Anchor Pretensioner C3066 (Regular or SuperCrew).

    • Disconnect Passenger Seatbelt Anchor Pretensioner C857 (SuperCab).

    • Disconnect RCM C310A and C310B.

    • Ignition ON.

    • For Regular or SuperCrew cabs, measure:
      Positive Lead Measurement / Action Negative Lead
      C3066-1
      GFD562392Courtesy of FORD MOTOR COMPANY
      		 Ground
      C3066-2
      GFD562392Courtesy of FORD MOTOR COMPANY
      		 Ground

    • With SuperCab, measure:
      Positive Lead Measurement / Action Negative Lead
      C857-1
      GFD562392Courtesy of FORD MOTOR COMPANY
      		 Ground
      C857-2
      GFD562392Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is any voltage present? 

    Yes  REPAIR the circuit(s). Refer to Wiring Diagrams OEM CONNECTOR REPAIR PROCEDURES for schematic and connector information. GO to  M17
    No  GO to  M12

  18. M11 CONFIRM THE PASSENGER SEATBELT ANCHOR PRETENSIONER FAULT

    NOTE: Make sure all SRS components 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 damaged, pinched, cut or pierced wires.
      • Inspect RCM C310A and C310B Connector Position Assurance (CPA) lever/lock for correct operation.
      • Inspect Passenger Seatbelt Anchor Pretensioner C3066 and make sure the Connector Position Assurance (CPA) tabs are not broken and the clip is not damaged.
      • Repair any concerns found. Refer to Wiring Diagrams OEM CONNECTOR REPAIR PROCEDURES for schematic and connector information.

    • Connect Passenger Seatbelt Anchor Pretensioner C3066 (Regular or SuperCrew).

    • Connect Passenger Seatbelt Anchor Pretensioner C857 (SuperCab).

    • Ignition ON.

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

    Was the original DTC retrieved on-demand during self-test? 

    Yes  INSTALL a new passenger seatbelt anchor pretensioner. REFER to: Front Seatbelt Retractor and Pretensioner - Regular Cab . , or REFER to: Front Seatbelt Retractor and Pretensioner - SuperCab . , or REFER to: Front Seatbelt Retractor and Pretensioner - SuperCrew . GO to  M17
    No  In the process of diagnosing the fault, the fault condition has become intermittent. Do not install any new SRS components at this time. Install SRS components only when directed to do so in the pinpoint test. For DTC B0072:13 or B0072:1A, GO to  M13 For DTC B0072:11, GO to  M14 For DTC B0072:12, GO to  M15

  19. M12 CONFIRM THE RCM (RESTRAINTS CONTROL MODULE) FAULT

    NOTE: Make sure all SRS components 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 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 Wiring Diagrams OEM CONNECTOR REPAIR PROCEDURES for schematic and connector information.

    • Connect Passenger Seatbelt Anchor Pretensioner C3066 (Regular or SuperCrew) (if previously disconnected).

    • Connect Passenger Seatbelt Anchor Pretensioner C857 (SuperCab) (if previously disconnected).

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

    • Ignition ON.

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

    Was the original DTC retrieved on-demand 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 RCM. REFER to: Restraints Control Module (RCM) . GO to  M17
    No  In the process of diagnosing the fault, the fault condition has become intermittent. Do not install any new SRS components at this time. Install SRS components only when directed to do so in the pinpoint test. For DTC B0072:13 or B0072:1A, GO to  M13 For DTC B0072:11, GO to  M14 For DTC B0072:12, GO to  M15

  20. M13 CHECK THE PASSENGER SEATBELT ANCHOR PRETENSIONER DEPLOYMENT CONTROL (DEPLOY_30_RES) PID (PARAMETER IDENTIFICATION) FOR AN INTERMITTENT LOW RESISTANCE OR OPEN CIRCUIT FAULT

    • Access the RCM and monitor the DEPLOY_30_RES (mOhm) PID

    • While monitoring the PID, attempt to recreate the fault by wiggling connectors (including any inline connectors) and flexing the wire harness frequently.

    Does the PID value stay between 1.7 and 2.98 ohms? 

    Yes  The fault is not present and cannot be recreated at this time. Do not install any new SRS components at this time. Install SRS components only when directed to do so in the pinpoint test. GO to  M16
    No  DEPOWER the SRS. REFER to: Supplemental Restraint System (SRS) Depowering . REPAIR as necessary. Refer to Wiring Diagrams OEM CONNECTOR REPAIR PROCEDURES for schematic and connector information. GO to  M17

  21. M14 CHECK THE PASSENGER SEATBELT ANCHOR PRETENSIONER DEPLOYMENT CONTROL CIRCUITS FOR AN INTERMITTENT SHORT TO GROUND FAULT

    • Attempt to recreate the fault by wiggling connectors (including any inline connectors) and flexing the wire harness frequently.

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

    Was DTC B0072:11 retrieved on-demand during self-test? 

    Yes  DEPOWER the SRS and REPAIR as necessary. REFER to: Supplemental Restraint System (SRS) Depowering . Refer to Wiring Diagrams OEM CONNECTOR REPAIR PROCEDURES for schematic and connector information. GO to  M17
    No  The fault is not present and cannot be recreated at this time. Do not install any new SRS components at this time. Install SRS components only when directed to do so in the pinpoint test. GO to  M16

  22. M15 CHECK THE PASSENGER SEATBELT ANCHOR PRETENSIONER DEPLOYMENT CONTROL CIRCUITS FOR AN INTERMITTENT SHORT TO BATTERY FAULT

    • Ignition OFF.

    • Disconnect Passenger Seatbelt Anchor Pretensioner C3066 (Regular or SuperCrew).

    • Disconnect Passenger Seatbelt Anchor Pretensioner C857 (SuperCab).

    • Ignition ON.

    • Attempt to recreate the fault by wiggling connectors (including any inline connectors) and flexing the wire harness frequently.

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

    Was DTC B0072:12 retrieved on-demand during self-test? 

    Yes  DEPOWER the SRS and REPAIR as necessary. REFER to: Supplemental Restraint System (SRS) Depowering . Refer to Wiring Diagrams OEM CONNECTOR REPAIR PROCEDURES for schematic and connector information. GO to  M17
    No  The fault is not present and cannot be recreated at this time. Do not install any new SRS components at this time. Install SRS components only when directed to do so in the pinpoint test. GO to  M16

  23. M16 CHECK THE HARNESS AND CONNECTORS

    • Ignition OFF.

    • Disconnect Passenger Seatbelt Anchor Pretensioner C3066 (Regular or SuperCrew).

    • Disconnect Passenger Seatbelt Anchor Pretensioner C857 (SuperCab).

    • Inspect:

      • Inspect connector(s) (including any inline connectors) for corrosion, loose or spread terminals and loose or frayed wire connections at terminals.
      • Inspect wire harness for any damage, pinched, cut or pierced wires.
      • Inspect RCM C310A and C310B Connector Position Assurance (CPA) lever/lock for correct operation.
      • Inspect Passenger Seatbelt Anchor Pretensioner C3066 and make sure the Connector Position Assurance (CPA) tabs are not broken and the clip is not damaged.

    Were any concerns found? 

    Yes  REPAIR as necessary. Refer to Wiring Diagrams OEM CONNECTOR REPAIR PROCEDURES for schematic and connector information. GO to  M17
    No  The fault is not present and cannot be recreated at this time. Do not install any new SRS components at this time. Install SRS components only when directed to do so in the pinpoint test. GO to  M17

  24. M17 CHECK FOR ADDITIONAL SRS (SUPPLEMENTAL RESTRAINT SYSTEM) DIAGNOSTIC TROUBLE CODES (DTCS)

    • Ignition OFF.

    • Connect all  previously disconnected components and connectors.

    • Ignition ON.

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

      Using a diagnostic scan tool, perform

      Restraints  self-test.

    Are any RCM or OCSM Diagnostic Trouble Codes (DTCs) retrieved on-demand 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 SRS Diagnostic Trouble Codes (DTCs). REFER to the DTC Chart In this article.
    No  The repair is complete. RETURN the vehicle to the customer.
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