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Home >> Lincoln >> 2010 >> MKZ AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1260 (Supplemental Restraint System) >> Diagnosis And Testing >> Air Bag and Safety Belt Pretensioner Supplemental Restraint System (SRS) >> Pinpoint Test - Restraints Control Module (RCM) >> Pinpoint Test H: DTCs B0028:11, B0028:12, B0028:13 and B0028:1A >> PINPOINT TEST H: DTCs B0028:11, B0028:12, B0028:13 AND B0028:1A

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

WARNING: This page is about a different car, the 2010 Mercury Mariner and 2010 Ford Escape. 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 air bag, Safety Canopy® or side air curtain modules. Failure to follow this instruction may result in the accidental deployment of these modules, which increases the risk of serious personal injury or death.
WARNING: Never disassemble or tamper with safety belt buckle/retractor pretensioners or adaptive load limiting retractors or probe the electrical connectors. Failure to follow this instruction may result in the accidental deployment of the safety belt pretensioners or adaptive load limiting retractors which increases the risk of serious 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.
Most faults are due to connector and/or wiring concerns. Carry out a thorough inspection and verification before proceeding with the pinpoint test.
NOTE: Supplemental Restraint System (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 Ford Catalog Advantage™ or equivalent 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. H1 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 the self-test.

      For DTC B0028:13 or B0028:1A, GO to H2  .

      For DTC B0028:11, GO to  H8.

      For DTC B0028:12, GO to  H10.

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

      For DTC B0028:13 or B0028:1A, GO to  H13.

      For DTC B0028:11, GO to  H14.

      For DTC B0028:12, GO to  H15.

  2. H2 CHECK THE RIGHT SIDE AIRBAG DEPLOYMENT CONTROL RESISTANCE (DEPLOY_13_R) PID 
    • Ignition ON.
    • 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  H12.
    • No:  GO to H3  .
  3. H3 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 seat side air bag circuits and accessible connectors (including any in-line connectors) by wiggling connectors and flexing the wire harness.
    • 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 appropriate SYSTEM WIRING DIAGRAMS article, Connector Repair Procedures for schematic and connector information.

      GO to  H17.

    • No:  For PID value less than 1.7 ohms, GO to H4  .

      For PID value greater than 2.78 ohms, GO to  H6.

  4. H4 CHECK THE RIGHT SIDE AIRBAG DEPLOYMENT CONTROL DTC FOR A FAULT STATUS CHANGE (LOW RESISTANCE INDICATED) 
    NOTE: This pinpoint test step will attempt 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  H11.
    • No:  GO to H5  .
  5. H5 CHECK FOR A SHORT BETWEEN PASSENGER SEAT SIDE AIR BAG CIRCUITS 
    • Ignition OFF.
    • Depower the SRS  . Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
    • Disconnect: RCM  C2041A and C2041B.
    • Measure the resistance between passenger seat side air bag C3255-1, circuit CR106 (VT/GY), harness side and C3255-3, circuit RR106 (YE/OG), harness side.
      Fig 1: Measuring Resistance Between Driver Safety Canopy® C9006-1, Circuit CR109 (BN/BU) And C9006-3, Circuit RR109 (BU/GN)
      G06100032Courtesy of FORD MOTOR CO.
    • Is the resistance greater than 10,000 ohms? 
    • Yes:  GO to  H12.
    • No:  REPAIR circuits CR106 (VT/GY) and RR106 (YE/OG). GO to  H17.
  6. H6 CHECK PASSENGER SEAT SIDE AIR BAG CIRCUITS FOR AN OPEN 
    • Ignition OFF.
    • Depower the SRS  . Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
    • Disconnect: Passenger Seat Side Air Bag Module C3255.
    • Disconnect: RCM  C2041A and C2041B.
    • Measure the resistance between RCM  C2041B, harness side and Passenger Seat Side Air Bag Module C3255, harness side using the following chart.
      RCM SPECIFICATION

      RCM  Circuit Passenger Seat Side Air Bag Module
      C2041B-16 CR106 (VT/GY) C3255-1
      C2041B-15 RR106 (YE/OG) C3255-3
      Fig 2: Measuring Resistance RCM C2041B, Harness Side And Driver Seat Side Air Bag C3252, Harness Side
      G06383754Courtesy of FORD MOTOR CO.
    • Are the resistances less than 0.5 ohm? 
    • Yes:  GO to H7  .
    • No:  REPAIR circuit CR106 (VT/GY) or RR106 (YE/OG). GO to  H17.
  7. H7 CHECK THE RIGHT SIDE AIRBAG DEPLOYMENT CONTROL DTC FOR A FAULT STATUS CHANGE (OPEN INDICATED) 
    NOTE: This pinpoint test step will attempt 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  C2041A and C2041B.
    • Connect a fused jumper wire between passenger seat side air bag C3255-1, circuit CR106 (VT/GY), harness side and C3255-3, circuit RR106 (YE/OG), harness side.
    • 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 seat side air bag circuits shorted together, a low resistance fault would normally be retrieved.
    • Did the on-demand DTC change from B0028:13 to B0028:1A? 
    • Yes:  GO to  H11.
    • No:  GO to  H12.
  8. H8 CHECK THE RIGHT SIDE AIRBAG DEPLOYMENT CONTROL DTC FOR A FAULT STATUS CHANGE (SHORT TO GROUND INDICATED) 
    NOTE: This pinpoint test step will attempt 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  H11.
    • No:  GO to H9  .
  9. H9 CHECK PASSENGER SEAT SIDE AIR BAG CIRCUITS FOR A SHORT TO GROUND 
    • Ignition OFF.
    • Depower the SRS  . Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
    • Disconnect: RCM  C2041A and C2041B.
    • Measure the resistance between passenger seat side air bag:
      • C3255-1, circuit CR106 (VT/GY), harness side and ground.
      • C3255-3, circuit RR106 (YE/OG), harness side and ground.
        Fig 3: Measuring Resistance Between Driver Seat Side Air Bag And C3252-1, Circuit CR105 (GN/BU), Harness Side And Ground
        G06100034Courtesy of FORD MOTOR CO.
    • Are the resistances greater than 10,000 ohms? 
    • Yes:  GO to  H12.
    • No:  REPAIR circuit CR106 (VT/GY) or RR106 (YE/OG). GO to  H17.
  10. H10 CHECK THE PASSENGER SEAT SIDE AIR BAG CIRCUITS FOR A SHORT TO VOLTAGE 
    • Ignition OFF.
    • Depower the SRS  . Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
    • Disconnect: Passenger Seat Side Air Bag Module C3255.
    • Disconnect: RCM  C2041A and C2041B.
    • 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 air bag:
      • C3255-1, circuit CR106 (VT/GY), harness side and ground.
      • C3255-3, circuit RR106 (YE/OG), harness side and ground.
        Fig 4: Measuring Voltage Between Driver Seat Side Air Bag And C3252-1, Circuit CR105 (GN/BU), Harness Side And Ground
        G06100035Courtesy of FORD MOTOR CO.
    • Is voltage present on either circuit? 
    • Yes:  REPAIR circuit CR106 (VT/GY) or RR106 (YE/OG). GO to  H17.
    • No:  GO to  H12.
  11. H11 CONFIRM THE PASSENGER SEAT SIDE AIR BAG MODULE 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 C2041A and C2041B Connector Position Assurance (CPA) lever/lock for correct operation. Refer to RESTRAINTS CONTROL MODULE (RCM) .
      • repair any concerns found.

        Refer to appropriate SYSTEM WIRING DIAGRAMS article, Connector Repair Procedures for schematic and connector information.

    • If previously installed, remove the fused jumper wire from the air bag module electrical connector.
    • Connect: Passenger Seat Side Air Bag C3255.
    • Connect: RCM  C2041A and C2041B.
    • 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 seat side air bag module harness for damage. REFER to SIDE AIR BAG MODULE . If a concern is found, REPAIR as necessary.

      If a concern was not found, INSTALL a new passenger side air bag module. REFER to SIDE AIR BAG MODULE . GO to  H17.

    • 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  H13.

      For DTC B0028:11, GO to  H14.

      For DTC B0028:12, GO to  H15.

  12. H12 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 .
    • If previously installed, remove the fused jumper wire from the air bag module electrical connector.
    • 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 C2041A and C2041B Connector Position Assurance (CPA) lever/lock for correct operation. Refer to RESTRAINTS CONTROL MODULE (RCM) .
      • repair any concerns found.

        Refer to appropriate SYSTEM WIRING DIAGRAMS article, Connector Repair Procedures for schematic and connector information.

    • Connect: Passenger Seat Side Air Bag C3255.
    • Connect: RCM  C2041A and C2041B (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  H17.
    • 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 H13  .

      For DTC B0028:11, GO to  H14.

      For DTC B0028:12, GO to  H15.

  13. H13 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 in-line connectors) and flexing the wire harness.
    • 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  H16.
    • No:  DEPOWER the SRS  and REPAIR as necessary.

      Refer to appropriate SYSTEM WIRING DIAGRAMS article, Connector Repair Procedures for schematic and connector information.

      GO to  H17.

  14. H14 CHECK THE RIGHT SIDE AIRBAG DEPLOYMENT CONTROL FOR AN INTERMITTENT SHORT TO GROUND FAULT 
    • Attempt to recreate the fault by wiggling connectors (including any in-line connectors) and flexing the wire harness.
    • 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 appropriate SYSTEM WIRING DIAGRAMS article, Connector Repair Procedures for schematic and connector information.

      GO to  H17.

    • 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  H16.
  15. H15 CHECK THE RIGHT SIDE AIRBAG DEPLOYMENT CONTROL FOR AN INTERMITTENT SHORT TO BATTERY FAULT 
    • Yes:  DEPOWER the SRS  and REPAIR as necessary.

      Refer to appropriate SYSTEM WIRING DIAGRAMS article, Connector Repair Procedures for schematic and connector information.

      GO to  H17.

    • 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 H16  .
  16. H16 CHECK HARNESS AND CONNECTORS 
    • Ignition OFF.
    • Depower the SRS  . Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
    • Disconnect the passenger seat side air bag module C3255:
      • 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.
    • Were any concerns found? 
    • Yes:  REPAIR as necessary.

      Refer to appropriate SYSTEM WIRING DIAGRAMS article, Connector Repair Procedures for schematic and connector information.

      GO to H17  .

    • 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 H17  .
  17. H17 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 - Restraints.
      • NOTE: When selecting Restraints from the Self Test menu, DTCs will be retrieved from the RCM  and OCSM  .
    • Are any RCM and/or OCSM 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  and OCSM CMDTCs  . PROVE OUT the SRS  . Repair is complete. RETURN the vehicle to the customer.
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