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Home >> Audi >> 2014 >> A5 Prestige >> Repair and Diagnosis >> External Pages >> Different car >> Section 778 (Supplemental Restraint System) >> Diagnosis And Testing >> Airbag and Safety Belt Pretensioner Supplemental Restraint System (SRS) >> Pinpoint Test >> PINPOINT TEST E : DTCs B0050:11, B0050:12, B0050:13 AND B0050:1D >> PINPOINT TEST E : DTCs B0050:11, B0050:12, B0050:13 AND B0050:1D

PINPOINT TEST E : DTCs B0050:11, B0050:12, B0050:13 AND B0050:1D

WARNING: This page is about a different car, the 2016 Ford Expedition. However, it is still accessible from the selected car via links, so may be relevant.
  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) from the Flex Probe Kit when taking measurements. Failure to use the correct probe adapter(s) may damage 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: 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.
  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, DTCs may set.
  6. NOTE: The SRS must be fully operational and free of faults before releasing the vehicle to the customer.

  7. E1 RETRIEVE RCM DTCs

    • WARNING: Before beginning any service procedure, refer to Safety Warnings in Service Information

      REFER to Safety Belt and SRS Health and Safety Precautions in Description and Operation in Service Information .

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

    Was DTC B0050:11, B0050:12, B0050:13 or B0050:1D 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. For DTC B0050:11 or B0050:1D, GO to  E2. For DTC B0050:12, GO to  E4. For DTC B0050:13, GO to  E5.
    No  This is an intermittent fault when present as a CMDTC only. GO to  E10.

  8. E2 CHECK THE DRIVER SEATBELT SENSOR DTC FOR A FAULT STATUS CHANGE (SHORT TO GROUND OR CURRENT OUT OF RANGE INDICATED)

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

    • 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 Driver Safety Belt Buckle C3065 .
    • Ignition ON.
    • Using a diagnostic scan tool, perform RCM self-test.
    • DIAGNOSTIC TIP:  When viewing DTCs with the driver safety belt buckle disconnected, an open circuit fault is normally retrieved.

    Did the on-demand DTC change from B0050:11 or B0050:1D to B0050:13? 

    Yes  GO to  E8.
    No  For DTC B0050:11, GO to  E3. For DTC B0050:1D, GO to  E9.

  9. E3 CHECK THE DRIVER SAFETY BELT BUCKLE SWITCH CIRCUIT FOR A SHORT TO GROUND

    • Ignition OFF.
    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C3065-3
      GFD134423Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the resistance greater than 10, 000 ohms? 

    Yes  GO to  E9.
    No  REPAIR the circuit. Refer to Connector Repair Procedures for schematic and connector information. Go to  E11.

  10. E4 CHECK THE DRIVER SAFETY BELT BUCKLE SWITCH CIRCUIT FOR A SHORT TO VOLTAGE

    • Ignition OFF.
    • Disconnect Driver Side Airbag (Inline) C3051 .
    • Disconnect Driver Safety Belt Buckle C3065 .
    • Ignition ON.
    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C3065-3
      GFD134422Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is any voltage present? 

    Yes  REPAIR the circuit. Refer to Connector Repair Procedures for schematic and connector information. Go to  E11.
    No  GO to  E9.

  11. E5 CHECK THE DRIVER SEATBELT SENSOR DTC 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 fault reported changes, this indicates the RCM is functioning correctly and is not the source of the fault.

    • Ignition OFF.
    • Disconnect Driver Side Airbag (Inline) C3051 .
    • Disconnect Driver Safety Belt Buckle C3065 .
    • Connect a fused jumper wire:
      Positive Lead Measurement / Action Negative Lead
      C3065-3
      GFD135987Courtesy of FORD MOTOR COMPANY
      		 C3065-4
    • Ignition ON.
    • Using a diagnostic scan tool, perform RCM self-test.
    • DIAGNOSTIC TIP:  When viewing DTCs with the driver safety belt buckle switch circuits shorted together, a short to ground fault is normally retrieved.

    Did the on-demand DTC change from B0050:13 to B0050:11? 

    Yes  REMOVE the fused jumper wire and GO to  E8.
    No  REMOVE the fused jumper wire and GO to  E6.

  12. E6 CHECK THE DRIVER SAFETY BELT BUCKLE SWITCH CIRCUIT FOR AN OPEN

    • Ignition OFF.
    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C310B-54
      GFD134423Courtesy of FORD MOTOR COMPANY
      		 C3065-3

    Is the resistance less than 0.5 ohm? 

    Yes  GO to  E7.
    No  REPAIR the circuit. Refer to Connector Repair Procedures for schematic and connector information. Go to  E11.

  13. E7 CHECK THE DRIVER SAFETY BELT BUCKLE SWITCH GROUND CIRCUIT FOR AN OPEN

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C310B-53
      GFD134423Courtesy of FORD MOTOR COMPANY
      		 C3065-4

    Is the resistance less than 3 ohms? 

    Yes  GO to  E9.
    No  REPAIR the circuit. Refer to Connector Repair Procedures for schematic and connector information. Go to  E11.

  14. E8 CONFIRM THE DRIVER SAFETY BELT BUCKLE SWITCH FAULT

    NOTE: Make sure all restraint system components and the RCM electrical connectors are connected before carrying out the self-test. If not, 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.
      • Inspect RCM C310A and C310B

        CPA lever/lock for correct operation.

    • Connect Driver Side Airbag (Inline) C3051 (if previously disconnected).
    • Connect Driver Safety Belt Buckle C3065 .
    • 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 driver safety belt buckle (includes buckle switch). REFER to Safety Belt System . GO to  E11.
    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  E10.

  15. E9 CONFIRM THE RCM FAULT

    NOTE: Make sure all SRS components and the RCM electrical connectors are connected before carrying out the self-test. If not, 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.
      • Inspect RCM C310A and C310B

        CPA lever/lock for correct operation.

    • Connect Driver Safety Belt Buckle C3065 .
    • Connect Driver Side Airbag (Inline) C3051 (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 TSBs. If a TSB exists for this concern, discontinue this test and follow TSB instructions. If no TSBs address this concern, INSTALL a new RCM. REFER to Restraints Control Module (RCM) . GO to  E11.
    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  E10.

  16. E10 CHECK FOR AN INTERMITTENT FAULT

    • Ignition OFF.
    • Disconnect Driver Safety Belt Buckle C3065 .
      • 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

        CPA lever/lock for correct operation.

      • Repair any concerns found. Refer to Connector Repair Procedures , for schematic and connector information.
    • Connect all previously disconnected component(s) / connector(s).
    • Ignition ON.
    • Using a diagnostic scan tool, perform RCM self-test.

    Was DTC B0050:11, B0050:12, B0050:13 or B0050:1D 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. For DTC B0050:11 or B0050:1D, GO to  E2. For DTC B0050:12, GO to  E4. For DTC B0050:13, GO to  E5.
    No  The fault is not present and cannot be recreated at this time. 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  E11.

  17. E11 CHECK FOR ADDITIONAL SRS DTCs

    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.
    • Reconnect all SRS components (if previously disconnected).
    • Ignition ON.
    • Using a diagnostic scan tool, perform RCM self-test.

    Are any RCM DTCs retrieved on-demand during self-test? 

    Yes  Do not clear any DTCs until all DTCs have been resolved. DIAGNOSE and REPAIR the RCM DTCs. REFER to Restraints Control Module (RCM) DTC Chart  for pinpoint test direction.
    No  The repair is complete. RETURN the vehicle to the customer.
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