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Home >> Mercury >> 2008 >> Milan Base, 2.3 Z, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 1478 (Supplemental Restraint System) >> Diagnosis And Testing >> Air Bag and Safety Belt Pretensioner Supplemental Restraint System (SRS) >> Pinpoint Test - Supplemental Restraint System (SRS) >> Pinpoint Test B: DTCs B0001:11, B0001:12, B0001:13 and B0001:1A >> PINPOINT TEST B: DTCs B0001:11, B0001:12, B0001:13 AND B0001:1A

PINPOINT TEST B: DTCs B0001:11, B0001:12, B0001:13 AND B0001:1A

WARNING: This page is about a different car, the 2010 Mercury Milan, 2010 Lincoln MKZ, and 2010 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
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.
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™ 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. B1 RETRIEVE RCM DTCs 
    • Ignition ON.
    • Enter the following diagnostic mode on the scan tool: Self Test - RCM. 
    • Was DTC B0001:11, B0001:12, B0001:13 or B0001:1A 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 B0001:13 or B0001:1A, GO to B2  .

      For DTC B0001:11, GO to  B11.

      For DTC B0001:12, GO to  B14.

    • No  : This is an intermittent fault when present as a Continuous Memory Diagnostic Trouble Code (CMDTC) only.

      For DTC B0001:13 or B0001:1A, GO to  B19.

      For DTC B0001:11, GO to  B20.

      For DTC B0001:12, GO to  B21.

  2. B2 CHECK THE DRIVER FRONTAL STAGE 1 DEPLOYMENT CONTROL RESISTANCE (DEPLOY_00_R) PID 
    • Enter the following diagnostic mode on the scan tool: DataLogger - RCM. 
      • DEPLOY_00_R PID
    • Does the PID value read between 2 and 3.68 ohms? 
    • Yes  : GO to  B18.
    • No  : GO to B3  .
  3. B3 CHECK THE DRIVER FRONTAL STAGE 1 DEPLOYMENT CONTROL RESISTANCE (DEPLOY_00_R) PID WHILE CARRYING OUT THE HARNESS TEST 
    • Remove the lower steering column shroud to access the clockspring connectors.
    • While monitoring the DEPLOY_00_R PID, carry out the harness test of the driver air bag circuits and accessible connectors (including any inline connectors) by wiggling and flexing the wire harness, connectors, tilting and rotating the steering wheel frequently.
    • Does the PID value read between 2 and 3.68 ohms while carrying out the harness test? 
    • Yes  : DEPOWER the SRS  and REPAIR the connector, terminals or wire harness or INSTALL a new clockspring as needed. REFER to CLOCKSPRING .

      Refer to appropriate SYSTEM WIRING DIAGRAMS article for schematic and connector information.

      GO to  B23.

    • No  : For PID value less than 2 ohms, GO to B4  .

      For PID value greater than 3.68 ohms, GO to  B7.

  4. B4 CHECK THE DRIVER FRONTAL STAGE 1 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  B16.
    • No  : GO to B5  .
  5. B5 CHECK THE DRIVER FRONTAL STAGE 1 DEPLOYMENT CONTROL DTC FOR A FAULT STATUS CHANGE (LOW RESISTANCE INDICATED) (CLOCKSPRING DISCONNECTED) 
    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.
    • Ignition OFF.
    • Disconnect: Clockspring C218A.
    • Ignition ON.
    • Enter the following diagnostic mode on the scan tool: Self Test - RCM. 
    • DIAGNOSTIC TIP:  When viewing DTCs with the driver air bag module/clockspring disconnected, open circuit faults would normally be retrieved on stage 1 and 2.
    • Did the on-demand DTC change from B0001:1A to B0001:13? 
    • Yes  : GO to  B17.
    • No  : GO to B6  .
  6. B6 CHECK THE RCM FOR LOW RESISTANCE 
    • Ignition OFF.
    • Depower the SRS  . Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
    • Disconnect: RCM  C310A and C310B.
    • Measure the resistance between RCM  C310A pins 3 and 4, component side.
      Fig 1: Measuring Resistance Between RCM C310A Pins 3 And 4, Component Side
      G06257478Courtesy of FORD MOTOR CO.
    • Is the resistance greater than 10,000 ohms? 
    • Yes  : REPAIR circuits CR101 (VT/BN) and RR101 (YE/GN). GO to  B23.
    • No  : GO to  B18.
  7. B7 CHECK THE DRIVER AIR BAG STAGE 1 CIRCUITS FOR AN OPEN 
    • Ignition OFF.
    • Depower the SRS  . Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
    • Remove the driver air bag module. Refer to DRIVER AIR BAG MODULE .
    • Disconnect: RCM  C310A and C310B.
    • Measure the resistance between RCM  C310A, harness side and driver air bag module stage 1 electrical connector, harness side, using the following chart.
      CONNECTOR REFERENCE CHART

      RCM  Circuit Driver Air Bag Module Stage 1 Electrical Connector
      C310A-4 CR101 (VT/BN) Driver Air Bag Module Stage 1 electrical connector
      C310A-3 RR101 (YE/GN) Driver Air Bag Module Stage 1 electrical connector
      Fig 2: Measuring Resistance Between RCM C310A And Driver Air Bag Module Stage 1 Electrical Connector, Harness Side
      G06257479Courtesy of FORD MOTOR CO.
    • Are the resistances less than 1 ohm? 
    • Yes  : GO to  B9.
    • No  : GO to B8  .
  8. B8 CHECK THE DRIVER AIR BAG STAGE 1 CIRCUITS FOR AN OPEN (CLOCKSPRING DISCONNECTED) 
    • Disconnect: Clockspring C218A.
    • Measure the resistance between RCM  C310A, harness side and clockspring C218A, harness side using the following chart.
      RCM REFERENCE CHART

      RCM  Circuit Clockspring
      C310A-4 CR101 (VT/BN) C218A-1
      C310A-3 RR101 (YE/GN) C218A-9
      Fig 3: Measuring Resistance Between RCM C310A And Clockspring C218A, Harness Side
      G06254954Courtesy of FORD MOTOR CO.
    • Are the resistances less than 0.5 ohm? 
    • Yes  : GO to  B17.
    • No  : REPAIR circuit CR101 (VT/BN) or RR101 (YE/GN). GO to  B23.
  9. B9 CHECK THE DRIVER FRONTAL STAGE 1 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  C310A and C310B.
    • Connect a fused jumper wire between driver air bag module stage 1 electrical connector pins 1 and 2, 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 driver air bag stage 1 circuits shorted together, a low resistance fault would normally be retrieved on stage 1. Stage 2 will show an open circuit fault due to the driver air bag being disconnected.
    • Was DTC B0001:1A retrieved on-demand during self-test? 
    • Yes  : GO to  B16.
    • No  : GO to B10  .
  10. B10 CHECK THE DRIVER AIR BAG STAGE 1 CIRCUITS FOR AN OPEN (CLOCKSPRING DISCONNECTED) 
    • Ignition OFF.
    • Depower the SRS  . Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
    • Disconnect: Clockspring C218A.
    • Connect a fused jumper wire between clockspring electrical connector C218A pins 1 and 9, 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 clockspring stage 1 circuits shorted together, a low resistance fault would normally be retrieved on stage 1. Stage 2 will show an open circuit fault due to the driver air bag being disconnected.
    • Was DTC B0001:1A retrieved on-demand during self-test? 
    • Yes  : GO to  B17.
    • No  : GO to  B18.
  11. B11 CHECK THE DRIVER FRONTAL STAGE 1 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  B16.
    • No  : GO to B12  .
  12. B12 CHECK THE DRIVER FRONTAL STAGE 1 DEPLOYMENT CONTROL DTC FOR A FAULT STATUS CHANGE (SHORT TO GROUND INDICATED) (CLOCKSPRING DISCONNECTED) 
    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.
    • Ignition OFF.
    • Disconnect: Clockspring C218A.
    • Ignition ON.
    • Enter the following diagnostic mode on the scan tool: Self Test - RCM. 
    • DIAGNOSTIC TIP:  When viewing DTCs with the clockspring disconnected, open circuit faults would normally be retrieved on driver air bag stage 1 and 2.
    • Did the on-demand DTC change from B0001:11 to B0001:13? 
    • Yes  : GO to  B17.
    • No  : GO to B13  .
  13. B13 CHECK THE DRIVER AIR BAG STAGE 1 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 clockspring:
      • C218A-1, circuit CR101 (VT/BN), harness side and ground.
      • C218A-9, circuit RR101 (YE/GN), harness side and ground.
      Fig 4: Checking Driver Air Bag Stage 1 Circuits For Short To Ground
      G06063714Courtesy of FORD MOTOR CO.
    • Are the resistances greater than 10,000 ohms? 
    • Yes  : GO to  B18.
    • No  : Due to the shorting bar feature in the RCM  electrical connector, the fault can exist in either circuit. Do not remove or defeat the shorting bar.

      REPAIR circuit CR101 (VT/BN) or RR101 (YE/GN). GO to  B23.

  14. B14 CHECK THE DRIVER FRONTAL STAGE 1 DEPLOYMENT CONTROL DTC FOR A FAULT STATUS CHANGE (SHORT TO BATTERY INDICATED) (CLOCKSPRING DISCONNECTED) 
    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  B17.
    • No  : GO to B15  .
  15. B15 CHECK THE DRIVER AIR BAG STAGE 1 CIRCUITS FOR A SHORT TO VOLTAGE 
    • Yes  : Due to the shorting bar feature in the RCM  electrical connector, the fault can exist in either circuit. Do not remove or defeat the shorting bar.

      REPAIR circuit CR101 (VT/BN) or RR101 (YE/GN). GO to  B23.

    • No  : GO to  B18.
  16. B16 CONFIRM THE DRIVER 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.
    • Yes  : INSTALL a new driver air bag module. REFER to DRIVER AIR BAG MODULE . GO to  B23.
    • 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 B0001:13 or B0001:1A, GO to  B19.

      For DTC B0001:11, GO to  B20.

      For DTC B0001:12, GO to  B21.

  17. B17 CONFIRM THE CLOCKSPRING 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.
    • Yes  : INSTALL a new clockspring. REFER to CLOCKSPRING . GO to  B23.
    • 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 B0001:13 or B0001:1A, GO to  B19.

      For DTC B0001:11, GO to  B20.

      For DTC B0001:12, GO to  B21.

  18. B18 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 installed previously, remove the fused jumper wire from the air bag 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 damaged, pinched, cut or pierced wires.
      • inspect RCM  C310A and C310B 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 for schematic and connector information.

    • If previously removed, install the driver air bag module. Refer to DRIVER AIR BAG MODULE .
    • Connect: Clockspring C218A (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  B23.
    • 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 B0001:13 or B0001:1A, GO to B19  .

      For DTC B0001:11, GO to  B20.

      For DTC B0001:12, GO to  B21.

  19. B19 CHECK THE DRIVER FRONTAL STAGE 1 DEPLOYMENT CONTROL RESISTANCE (DEPLOY_00_R) PID FOR AN INTERMITTENT LOW RESISTANCE OR OPEN CIRCUIT FAULT 
    • Enter the following diagnostic mode on the scan tool: DataLogger - RCM. 
      • DEPLOY_00_R PID
    • Attempt to recreate the fault by wiggling connectors (including any inline connectors) and flexing the wire harness, tilting and rotating the steering wheel frequently.
    • Does the PID value read between 2 and 3.68 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  B22.
    • No  : DEPOWER the SRS  and REPAIR as necessary.

      Refer to appropriate SYSTEM WIRING DIAGRAMS article for schematic and connector information.

      GO to  B23.

  20. B20 CHECK THE DRIVER FRONTAL STAGE 1 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, tilting and rotating the steering wheel frequently.
    • Enter the following diagnostic mode on the scan tool: Self Test - RCM. 
    • Was DTC B0001:11 retrieved on-demand during self-test? 
    • Yes  : DEPOWER the SRS  and REPAIR as necessary.

      Refer to appropriate SYSTEM WIRING DIAGRAMS article for schematic and connector information.

      GO to  B23.

    • 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  B22.
  21. B21 CHECK THE DRIVER FRONTAL STAGE 1 DEPLOYMENT CONTROL FOR AN INTERMITTENT SHORT TO BATTERY FAULT 
    • Yes  : DEPOWER the SRS  and REPAIR as necessary.

      Refer to appropriate SYSTEM WIRING DIAGRAMS article for schematic and connector information.

      GO to  B23.

    • 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 B22  .
  22. B22 CHECK THE HARNESS AND CONNECTORS 
    • Ignition OFF.
    • Depower the SRS  . Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
    • Remove the driver air bag module:
      • 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 appropriate SYSTEM WIRING DIAGRAMS article for schematic and connector information.

      GO to B23  .

    • 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 B23  .
  23. B23 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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