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Home >> Ford >> 2012 >> Mustang Base, 2D Coupe, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 369 (Supplemental Restraint System) >> Diagnosis And Testing >> Airbag and Safety Belt Pretensioner Supplemental Restraint System (SRS) >> Pinpoint Tests >> Pinpoint Test F: DTCs B0028:11, B0028:12, B0028:13 and B0028:1A >> PINPOINT TEST F: DTCs B0028:11, B0028:12, B0028:13 AND B0028:1A

PINPOINT TEST F: DTCs B0028:11, B0028:12, B0028:13 AND B0028:1A

WARNING: This page is about a different car, the 2013 Ford F-550 Super Duty, 2013 Ford F-450 Super Duty, 2013 Ford F-350 Super Duty, and 2013 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
WARNING: Do not handle, move or change the original horizontal mounting position of the restraints control module (RCM) while the RCM is connected and the ignition switch is ON. Failure to follow this instruction may result in the accidental deployment of the Safety Canopy and cause serious personal injury or death.
WARNING: Never probe the electrical connectors on airbag, Safety Canopy or side air curtain assemblies. Failure to follow this instruction may result in the accidental deployment of these assemblies, which increases the risk of serious personal injury or death.
WARNING: Never disassemble or tamper with seat belt deployable components, including pretensioners, load limiters and inflators. Never back probe deployable device electrical connectors. Tampering or back probing may cause an accidental deployment and result in personal injury or death.
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.
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: 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.
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 parts catalog to make sure the correct component is being installed. If an incorrect SRS component is installed, DTCs may set.
NOTE: The SRS must be fully operational and free of faults before releasing the vehicle to the customer.
  1. F1 RETRIEVE RCM DTCs 
    • Ignition ON.
    • Enter the following diagnostic mode on the scan tool: Self Test - RCM.
    • Was DTC B0028:11, B0028:12, B0028:13 or B0028:1A 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. For DTC B0028:13 or B0028:1A, GO to F2.

      For DTC B0028:11, GO to  F8.

      For DTC B0028:12, GO to  F10.

    • No  : This is an intermittent fault when present as a CMDTC only.

      For DTC B0028:13 or B0028:1A, GO to  F13.

      For DTC B0028:11, GO to  F14.

      For DTC B0028:12, GO to  F15.

  2. F2 CHECK THE RIGHT SIDE AIRBAG DEPLOYMENT CONTROL RESISTANCE (DEPLOY_13_R) PID 
    • Enter the following diagnostic mode on the scan tool: DataLogger - RCM.
      • DEPLOY_13_R PID
    • Does the PID value read between 1.7 and 2.78 ohms? 
    • Yes  : GO to  F12.
    • No  : GO to F3.
  3. F3 CHECK THE RIGHT SIDE AIRBAG DEPLOYMENT CONTROL RESISTANCE (DEPLOY_13_R) PID WHILE CARRYING OUT THE HARNESS TEST 
    • While monitoring the DEPLOY_13_R PID, carry out the harness test of the passenger side airbag circuits and accessible connectors (including any in-line connectors) by wiggling connectors and flexing the wire harness frequently.
    • Does the PID value read between 1.7 and 2.78 ohms while carrying out the harness test? 
    • Yes  : DEPOWER the SRS and REPAIR the connector, terminals or wire harness as needed. Refer to "OEM Connector Repair Procedures" Article for schematic and connector information. GO to  F17.
    • No  : For PID value less than 1.7 ohms, GO to F4.

      For PID value greater than 2.78 ohms, GO to  F6.

  4. F4 CHECK THE RIGHT SIDE AIRBAG DEPLOYMENT CONTROL DTC 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 fault reported changes, this indicates the RCM is functioning correctly and is not the source of the fault.
    • Yes  : GO to  F11.
    • No  : GO to F5.
  5. F5 CHECK FOR A SHORT BETWEEN PASSENGER SEAT SIDE AIRBAG CIRCUITS 
    • Ignition OFF.
    • Depower the SRS. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
    • Disconnect: RCM C310A and C310B.
    • Measure the resistance between passenger seat side airbag C339-1, circuit CR106 (VT/GY), harness side and C339-2, circuit RR106 (YE/OG), harness side.
      Fig 1: Measuring Resistance Between Passenger Seat Side Airbag C339-1, Circuit CR106 (VT/GY) And C339-2, Circuit RR106 (YE/OG)
      G06063743Courtesy of FORD MOTOR CO.
    • Is the resistance greater than 10, 000 ohms? 
    • Yes  : GO to  F12.
    • No  : REPAIR circuits CR106 (VT/GY) and RR106 (YE/OG). GO to  F17.
  6. F6 CHECK THE PASSENGER SEAT SIDE AIRBAG CIRCUITS FOR AN OPEN 
    • Ignition OFF.
    • Depower the SRS. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
    • Disconnect: Passenger Seat Side Airbag C339.
    • Disconnect: RCM C310A and C310B.
    • Measure the resistance between RCM C310B, harness side and passenger seat side airbag C339, harness side using the following chart.
      RCM Circuit Passenger Seat Side Airbag
      C310B-16 CR106 (VT/GY) C339-1
      C310B-15 RR106 (YE/OG) C339-2
      Fig 2: Measuring Resistance Between RCM C310B And Passenger Seat Side Air Bag Module C339
      G06100038Courtesy of FORD MOTOR CO.
    • Are the resistances less than 0.5 ohm? 
    • Yes  : GO to F7.
    • No  : REPAIR circuit CR106 (VT/GY) or RR106 (YE/OG). GO to  F17.
  7. F7 CHECK THE RIGHT SIDE AIRBAG DEPLOYMENT CONTROL 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.
    • Connect: RCM C310A and C310B.
    • Connect a fused jumper wire between passenger seat side airbag C339-1, circuit CR106 (VT/GY), harness side, and passenger seat side airbag C339-2, circuit RR106 (YE/OG), harness side.
      Fig 3: Connecting Fused Jumper Wire Between Passenger Seat Side Airbag C339-1, Circuit CR106 (VT/GY) And C339-2, Circuit RR106 (YE/OG)
      G06509023Courtesy of FORD MOTOR CO.
    • Repower the SRS. Do not  prove out the SRS at this time. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
    • Ignition ON.
    • Enter the following diagnostic mode on the scan tool: Self Test - RCM.
    • DIAGNOSTIC TIP:  When viewing DTCs with the passenger side airbag circuits shorted together, a low resistance fault would normally be retrieved.
    • Did the on-demand DTC change from B0028:13 to B0028:1A? 
    • Yes  : REMOVE the fused jumper wire and GO to  F11.
    • No  : REMOVE the fused jumper wire and GO to  F12.
  8. F8 CHECK THE RIGHT SIDE AIRBAG DEPLOYMENT CONTROL DTC 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 fault reported changes, this indicates the RCM is functioning correctly and is not the source of the fault.
    • Yes  : GO to  F11.
    • No  : GO to F9.
  9. F9 CHECK THE PASSENGER SEAT SIDE AIRBAG CIRCUITS FOR A SHORT TO GROUND 
    • Ignition OFF.
    • Depower the SRS. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
    • Disconnect: RCM C310A and C310B.
    • Measure the resistance between passenger seat side airbag:
      • C339-1, circuit CR106 (VT/GY), harness side and ground.
      • C339-2, circuit RR106 (YE/OG), harness side and ground.
        Fig 4: Checking Passenger Seat Side Air Bag Circuits For Short To Ground
        G06063741Courtesy of FORD MOTOR CO.
    • Are the resistances greater than 10, 000 ohms? 
    • Yes  : GO to  F12.
    • No  : REPAIR circuit CR106 (VT/GY) or RR106 (YE/OG). GO to  F17.
  10. F10 CHECK THE PASSENGER SEAT SIDE AIRBAG CIRCUITS FOR A SHORT TO VOLTAGE 
    • Ignition OFF.
    • Depower the SRS. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
    • Disconnect: Passenger Seat Side Airbag C339.
    • Disconnect: RCM C310A and C310B.
    • Repower the SRS. Do not  prove out the SRS at this time. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
    • Ignition ON.
    • Measure the voltage between passenger seat side airbag:
      • C339-1, circuit CR106 (VT/GY), harness side and ground.
      • C339-2, circuit RR106 (YE/OG), harness side and ground.
        Fig 5: Checking Passenger Seat Side Air Bag Circuits For Short To Voltage
        G06063742Courtesy of FORD MOTOR CO.
    • Is any voltage present? 
    • Yes  : REPAIR circuit CR106 (VT/GY) or RR106 (YE/OG). GO to  F17.
    • No  : GO to  F12.
  11. F11 CONFIRM THE PASSENGER SEAT SIDE AIRBAG 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.
    • Depower the SRS. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
    • Prior to reconnecting any previously disconnected SRS component:
      • inspect connector(s) (including any in-line 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. Refer to RESTRAINTS CONTROL MODULE (RCM) .
      • repair any concerns found. Refer to "OEM Connector Repair Procedures" Article for schematic and connector information.
    • Connect: Passenger Seat Side Airbag C339.
    • Connect: RCM C310A and C310B.
    • Repower the SRS. Do not  prove out the SRS at this time. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
    • Ignition ON.
    • Enter the following diagnostic mode on the scan tool: Self Test - RCM.
    • Was the original DTC retrieved on-demand during self-test? 
    • Yes  : REMOVE and INSPECT the passenger seat side airbag wire harness for damage. REFER to SIDE AIRBAG . If a concern is found, REPAIR as necessary.

      If a concern was not  found, INSTALL a new passenger seat side airbag. REFER to SIDE AIRBAG . GO to  F17.

    • 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  .

      For DTC B0028:13 or B0028:1A, GO to  F13.

      For DTC B0028:11, GO to  F14.

      For DTC B0028:12, GO to  F15.

  12. F12 CONFIRM THE RCM 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.
    • Depower the SRS. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
    • Prior to reconnecting any previously disconnected SRS component:
      • inspect connector(s) (including any in-line 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. Refer to RESTRAINTS CONTROL MODULE (RCM) .
      • repair any concerns found. Refer to "OEM Connector Repair Procedures" Article for schematic and connector information.
    • Connect: Passenger Seat Side Airbag C339 (if previously disconnected).
    • Connect: RCM C310A and C310B (if previously disconnected).
    • Repower the SRS. Do not  prove out the SRS at this time. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
    • Ignition ON.
    • Enter the following diagnostic mode on the scan tool: Self Test - RCM.
    • Was the original DTC retrieved on-demand during self-test? 
    • Yes  : INSTALL a new RCM. REFER to RESTRAINTS CONTROL MODULE (RCM) . GO to  F17.
    • 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  .

      For DTC B0028:13 or B0028:1A, GO to F13.

      For DTC B0028:11, GO to  F14.

      For DTC B0028:12, GO to  F15.

  13. F13 CHECK THE RIGHT SIDE AIRBAG DEPLOYMENT CONTROL RESISTANCE (DEPLOY_13_R) PID FOR AN INTERMITTENT LOW RESISTANCE OR OPEN CIRCUIT FAULT 
    • Enter the following diagnostic mode on the scan tool: DataLogger - RCM.
      • DEPLOY_13_R PID
    • Attempt to recreate the fault by wiggling connectors (including any inline connectors) and flexing the wire harness frequently.
    • Does the PID value read between 1.7 and 2.78 ohms? 
    • Yes  : 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  F16.
    • No  : DEPOWER the SRS and REPAIR as necessary. Refer to "OEM Connector Repair Procedures" Article for schematic and connector information. GO to  F17.
  14. F14 CHECK THE RIGHT SIDE AIRBAG DEPLOYMENT CONTROL 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.
    • Enter the following diagnostic mode on the scan tool: Self Test - RCM.
    • Was DTC B0028:11 retrieved on-demand during self-test? 
    • Yes  : DEPOWER the SRS and REPAIR as necessary. Refer to "OEM Connector Repair Procedures" Article for schematic and connector information. GO to  F17.
    • 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  F16.
  15. F15 CHECK THE RIGHT SIDE AIRBAG DEPLOYMENT CONTROL FOR AN INTERMITTENT SHORT TO BATTERY FAULT 
    • Yes  : DEPOWER the SRS and REPAIR as necessary. Refer to "OEM Connector Repair Procedures" Article for schematic and connector information. GO to  F17.
    • 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 F16.
  16. F16 CHECK THE HARNESS AND CONNECTORS 
    • Ignition OFF.
    • Depower the SRS. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
    • Disconnect: Passenger Seat Side Airbag C339.
      • inspect connector(s) (including any in-line 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. Refer to RESTRAINTS CONTROL MODULE (RCM) .
    • Were any concerns found? 
    • Yes  : REPAIR as necessary. Refer to "OEM Connector Repair Procedures" Article for schematic and connector information. GO to F17.
    • 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 F17.
  17. F17 CHECK FOR ADDITIONAL SRS DTCs 
    • Ignition OFF.
      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.
    • Reconnect all SRS components (if previously disconnected).
    • If previously directed to depower the SRS, repower the SRS. Do not  prove out the SRS at this time. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
    • Ignition ON.
    • Enter the following diagnostic mode on the scan tool: Self Test - RCM.
    • Are any RCM DTCs retrieved on-demand during self-test? 
    • Yes  : Do not clear any DTCs until all DTCs have been resolved. GO to the DTC CHARTS  for pinpoint test direction.
    • No  : CLEAR all RCM CMDTCs. PROVE OUT the SRS. Repair is complete. RETURN the vehicle to the customer.
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