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Home >> Ford >> 2023 >> Mustang Mach-E Select, RWD >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Supplemental Restraint System - Pinpoint Tests Aa - AZ >> Pinpoint Test Ag: B1412:11, B1412:12, B1412:13, B1412:1A

Pinpoint Test Ag: B1412:11, B1412:12, B1412:13, B1412:1A

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

    Normal Operation and Fault Conditions 

    The RCM continuously monitors the second row passenger seatbelt retractor pretensioner circuits for the following faults:

    • Resistance out of range
    • Unexpected voltage
    • Short to ground
    • Faulted second row passenger seatbelt retractor pretensioner

    If a fault is detected, the RCM stores DTC B1412:11, B1412:12, B1412:13 or B1412:1A 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
    • Second row passenger seatbelt retractor pretensioner
    • RCM

    GFD769509Courtesy of FORD MOTOR COMPANY

    • 1 - May set DTC
    • 2 - Desired range

    DTC Fault Trigger Conditions 

    DTC Description Fault Trigger Condition
    RCM B1412:11 Second Row Passenger Side Seatbelt Pretensioner Deployment Control: Circuit Short To Ground A fault is indicated when the RCM senses a short to ground on either second row passenger seatbelt retractor pretensioner circuit for more than 6 seconds.
    RCM B1412:12 Second Row Passenger Side Seatbelt Pretensioner Deployment Control: Circuit Short To Battery A fault is indicated when the RCM senses a short to voltage on either second row passenger seatbelt retractor pretensioner circuit for more than 6 seconds.
    RCM B1412:13 Second Row Passenger Side Seatbelt Pretensioner Deployment Control: Circuit Open A fault is indicated when the RCM measures more than the desired resistance between the second row passenger seatbelt retractor pretensioner circuits for more than 6 seconds.
    RCM B1412:1A Second Row Passenger Side Seatbelt Pretensioner Deployment Control: Circuit Resistance Below Threshold A fault is indicated when the RCM measures less than the desired resistance between the second row passenger seatbelt retractor pretensioner circuits for more than 6 seconds.

    Possible Sources 

    • Wiring, terminals or connectors
    • Second row passenger seatbelt retractor pretensioner
    • RCM

    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. AG1 RETRIEVE RCM (RESTRAINTS CONTROL MODULE) 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 RCM self-test.

    Was DTC B1412:11, B1412:12, B1412:13 and B1412:1A 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 BA If DTC U3003:16 or U3003:17 is not retrieved on-demand during self-test, DIAGNOSE the second row passenger seatbelt retractor pretensioner Diagnostic Trouble Codes (DTCs).For DTC B1412:13 or B1412:1A, GO to AG2 For DTC B1412:11, GO to AG8 For DTC B1412:12, GO to AG10 
    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 BA If DTC U3003:16 or U3003:17 is not retrieved on-demand during self-test, DIAGNOSE the second row passenger seatbelt retractor pretensioner Continuous Memory Diagnostic Trouble Codes (CMDTCs).For DTC B1412:13 or B1412:1A, GO to AG13 For DTC B1412:11, GO to AG14 For DTC B1412:12, GO to AG15 

  3. AG2 CHECK THE SECOND ROW PASSENGER SEATBELT RETRACTOR PRETENSIONER DEPLOYMENT CONTROL (DEPLOY_22_R) PID (PARAMETER IDENTIFICATION)

    Access the RCM and monitor the DEPLOY_22_R (mOhm) PID

    • Monitor and record the resistance value displayed by the PID.

    Does the PID value read between 1.7 and 2.98 ohms? 

    Yes  GO to AG12 
    No  GO to AG3 

  4. AG3 CHECK THE SECOND ROW PASSENGER SEATBELT RETRACTOR PRETENSIONER DEPLOYMENT CONTROL (DEPLOY_22_R) PID (PARAMETER IDENTIFICATION) WHILE CARRYING OUT THE HARNESS TEST

    Access the RCM and monitor the DEPLOY_22_R (mOhm) PID

    • While monitoring the PID, carry out the harness test of the second row passenger seatbelt retractor pretensioner circuits and accessible connectors (including any inline connectors) by wiggling and flexing the wire harness and connectors frequently. Record the resistance value indicated by the PID.

    Does the PID value read between 1.7 and 2.98 ohms while carrying out the harness test? 

    Yes  DEPOWER the SRS and REPAIR the connector, terminals or wire harness as needed. REFER to: Supplemental Restraint System (SRS) Depowering . Refer to OEM_CONNECTOR_REPAIR_PROCEDURES for schematic and connector information. GO to AG17 
    No  For PID value less than 1.7 ohms, GO to AG4  For PID value greater than 2.98 ohms, GO to AG6 

  5. AG4 CHECK THE SECOND ROW PASSENGER SEATBELT RETRACTOR 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 Second Row Passenger Seatbelt Retractor Pretensioner C4572.

    • Ignition ON.

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

    • DIAGNOSTIC TIP: 

      When viewing Diagnostic Trouble Codes (DTCs) with the Second Row Passenger seatbelt retractor pretensioner disconnected, an open circuit fault is normally retrieved.

    Did the on-demand DTC change from B1412:1A to B1412:13? 

    Yes  GO to AG11 
    No  GO to AG5 

  6. AG5 CHECK FOR A SHORT BETWEEN THE SECOND ROW PASSENGER SEATBELT RETRACTOR PRETENSIONER CIRCUITS

    • Ignition OFF.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C4572 Pin 1
      GFD769505Courtesy of FORD MOTOR COMPANY
      		 C4572 Pin 2

    Is the resistance greater than 10, 000 ohms? 

    Yes  GO to AG12 
    No  REPAIR the circuit(s). Refer to OEM_CONNECTOR_REPAIR_PROCEDURES for schematic and connector information. GO to AG17 

  7. AG6 CHECK THE SECOND ROW PASSENGER SEATBELT RETRACTOR PRETENSIONER CIRCUITS FOR AN OPEN

    • Ignition OFF.

    • Disconnect Second Row Passenger Seatbelt Retractor Pretensioner C4572.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C310B Pin 7
      GFD769505Courtesy of FORD MOTOR COMPANY
      		 C4572 Pin 1
      C310B Pin 8
      GFD769505Courtesy of FORD MOTOR COMPANY
      		 C4572 Pin 2

    Are the resistances less than 0.5 ohm? 

    Yes  GO to AG7 
    No  REPAIR the circuits. Refer to OEM_CONNECTOR_REPAIR_PROCEDURES for schematic and connector information. GO to AG17 

  8. AG7 CHECK THE SECOND ROW PASSENGER SEATBELT RETRACTOR 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 a fused jumper wire:
      Lead 1 Measurement / Action Lead 2
      C4572 Pin 1
      GFD769507Courtesy of FORD MOTOR COMPANY
      		 C4572 Pin 2

    • Ignition ON.

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

    • DIAGNOSTIC TIP: 

      When viewing Diagnostic Trouble Codes (DTCs) with the rear seatbelt retractor pretensioner circuits shorted together, a low resistance fault is normally retrieved.

    Did the on-demand DTC change from B1412:13 to B1412:1A? 

    Yes  REMOVE the fused jumper wire and GO to AG11 
    No  REMOVE the fused jumper wire and GO to AG12 

  9. AG8 CHECK THE SECOND ROW PASSENGER SEATBELT RETRACTOR 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 Second Row Passenger Seatbelt Retractor Pretensioner C4572.

    • Ignition ON.

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

    • DIAGNOSTIC TIP: 

      When viewing Diagnostic Trouble Codes (DTCs) with the Second Row Passenger seatbelt retractor pretensioner disconnected, an open circuit fault is normally retrieved.

    Did the on-demand DTC change from B1412:11 to B1412:13? 

    Yes  GO to AG11 
    No  GO to AG9 

  10. AG9 CHECK THE SECOND ROW PASSENGER SEATBELT RETRACTOR PRETENSIONER CIRCUITS FOR A SHORT TO GROUND

    • Ignition OFF.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C4572 Pin 1
      GFD769505Courtesy of FORD MOTOR COMPANY
      		 Ground
      C4572 Pin 2
      GFD769505Courtesy of FORD MOTOR COMPANY
      		 Ground

    Are the resistances greater than 10, 000 ohms? 

    Yes  GO to AG12 
    No  REPAIR the circuit(s). Refer to OEM_CONNECTOR_REPAIR_PROCEDURES for schematic and connector information. GO to AG17 

  11. AG10 CHECK THE SECOND ROW PASSENGER SEATBELT RETRACTOR PRETENSIONER CIRCUITS FOR A SHORT TO VOLTAGE

    • Ignition OFF.

    • Disconnect Second Row Passenger Seatbelt Retractor Pretensioner C4572.

    • Ignition ON.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C4572 Pin 1
      GFD769508Courtesy of FORD MOTOR COMPANY
      		 Ground
      C4572 Pin 2
      GFD769508Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is any voltage present? 

    Yes  REPAIR the circuit(s). Refer to OEM_CONNECTOR_REPAIR_PROCEDURES for schematic and connector information. GO to AG17 
    No  GO to AG12 

  12. AG11 CONFIRM THE SECOND ROW PASSENGER SEATBELT RETRACTOR 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 Second Row Passenger Seatbelt Retractor Pretensioner C4572 and make sure the Connector Position Assurance (CPA) tabs are not broken and the clip is not damaged.
      • Repair any concerns found. Refer to OEM_CONNECTOR_REPAIR_PROCEDURES for schematic and connector information.

    • Connect Second Row Passenger Seatbelt Retractor Pretensioner C4572.

    • 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 second row passenger seatbelt retractor pretensioner. REFER to: Rear Seatbelt Retractor and Pretensioner . GO to AG17 
    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 B1412:13 or B1412:1A, GO to AG13 For DTC B1412:11, GO to AG14 For DTC B1412:12, GO to AG15 

  13. AG12 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 OEM_CONNECTOR_REPAIR_PROCEDURES for schematic and connector information.

    • Connect Second Row Passenger Seatbelt Retractor Pretensioner C4572 (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 AG17 
    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 B1412:13 or B1412:1A, GO to AG13 For DTC B1412:11, GO to AG14 For DTC B1412:12, GO to AG15 

  14. AG13 CHECK THE SECOND ROW PASSENGER SEATBELT RETRACTOR PRETENSIONER DEPLOYMENT CONTROL (DEPLOY_22_R) PID (PARAMETER IDENTIFICATION) FOR AN INTERMITTENT LOW RESISTANCE OR OPEN CIRCUIT FAULT

    Access the RCM and monitor the DEPLOY_22_R (mOhm) PID

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

    Does the PID value read 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 AG16 
    No  DEPOWER the SRS. REFER to: Supplemental Restraint System (SRS) Depowering . REPAIR as necessary. Refer to OEM_CONNECTOR_REPAIR_PROCEDURES for schematic and connector information. GO to AG17 

  15. AG14 CHECK THE SECOND ROW PASSENGER SEATBELT RETRACTOR 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 B1412:11 retrieved on-demand during self-test? 

    Yes  DEPOWER the SRS and REPAIR as necessary. REFER to: Supplemental Restraint System (SRS) Depowering . Refer to OEM_CONNECTOR_REPAIR_PROCEDURES for schematic and connector information. GO to AG17 
    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 AG16 

  16. AG15 CHECK THE SECOND ROW PASSENGER SEATBELT RETRACTOR PRETENSIONER DEPLOYMENT CONTROL CIRCUITS FOR AN INTERMITTENT SHORT TO BATTERY FAULT

    • Ignition OFF.

    • Disconnect Second Row Passenger Seatbelt Retractor Pretensioner C4572.

    • 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 B1412:12 retrieved on-demand during self-test? 

    Yes  DEPOWER the SRS and REPAIR as necessary. REFER to: Supplemental Restraint System (SRS) Depowering . Refer to OEM_CONNECTOR_REPAIR_PROCEDURES for schematic and connector information. GO to AG17 
    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 AG16 

  17. AG16 CHECK THE HARNESS AND CONNECTORS

    • Ignition OFF.

    • Disconnect Second Row Passenger Seatbelt Retractor Pretensioner C4572.

      • 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 Second Row Passenger Seatbelt Retractor Pretensioner C4572 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 OEM_CONNECTOR_REPAIR_PROCEDURES for schematic and connector information. GO to AG17 
    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 AG17 

  18. AG17 CHECK FOR ADDITIONAL SRS (SUPPLEMENTAL RESTRAINT SYSTEM) DIAGNOSTIC TROUBLE CODES (DTCS)

    • Ignition OFF.

    • 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 BECMB.

      Using a diagnostic scan tool, perform

      Restraints  self-test.

    Are any RCM Diagnostic Trouble Codes (DTCs) retrieved on-demand during self-test? 

    Yes  Do not clear any Diagnostic Trouble Codes (DTCs) until all SRS 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.
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