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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 N: DTCs B0091:11, B0091:93, B0097:11 and B0097:93 >> PINPOINT TEST N: DTCs B0091:11, B0091:93, B0097:11 AND B0097:93

PINPOINT TEST N: DTCs B0091:11, B0091:93, B0097:11 AND B0097:93

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.
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: The SRS  must be fully operational and free of faults before releasing the vehicle to the customer.
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: Do not probe any impact sensor. The impact sensor cannot be tested using a multi-meter.
  1. N1 RETRIEVE RCM DTCs 
    • Ignition ON.
    • Enter the following diagnostic mode on the scan tool: Self Test - RCM. 
    • Was any DTCs retrieved on-demand during self-test? 
    • Yes  : Fault(s) cannot be cleared until corrected and the DTC(s) are no longer retrieved on-demand during self-test.

      For DTC B0091:11 AND  B0097:11, GO to N2  .

      For DTC B0091:93 AND  B0097:93, GO to  N6.

      For DTC B0091:93, ONLY  , GO to  N8.

      For DTC B0097:93, ONLY  , GO to  N11.

      For any other DTCs, REFER to the DTC CHART .

    • No  : The fault is intermittent when present as a Continuous Memory Diagnostic Trouble Code (CMDTC) only. GO to  N15.
  2. N2 CHECK THE LEFT SIDE RESTRAINTS SENSOR 1 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.
  3. N3 CHECK THE RIGHT SIDE RESTRAINTS SENSOR 2 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.
  4. N4 CHECK THE DRIVER B-PILLAR SIDE IMPACT SENSOR FEED CIRCUIT FOR A SHORT TO GROUND AND SHORT BETWEEN SENSOR CIRCUITS 
    • Ignition OFF.
    • Depower the SRS  . Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
    • Disconnect: Driver First Row B-Pillar Side Impact Sensor C3057.
    • Disconnect: RCM  C310A and C310B.
    • Measure the resistance between driver first row B-pillar side impact sensor
      • C3057-1, circuit VR217 (GY/YE), harness side and ground.
      • C3057-1, circuit VR217 (GY/YE), harness side and C3057-2, circuit RR131 (VT/GY), harness side.
      Fig 1: Checking Driver B-Pillar Side Impact Sensor Feed Circuit For Short To Ground And Short Between Sensor Circuits
      G06255036Courtesy of FORD MOTOR CO.
    • Are the resistances greater than 10,000 ohms? 
    • Yes  : GO to N5  .
    • No  : REPAIR circuit VR217 (GY/YE) and/or RR131 (VT/GY). GO to  N16.
  5. N5 CHECK THE PASSENGER SECOND ROW C-PILLAR SIDE IMPACT SENSOR FEED CIRCUIT FOR A SHORT TO GROUND AND SHORT BETWEEN SENSOR CIRCUITS 
    • Measure the resistance between passenger second row C-pillar side impact sensor:
      • C3260-1, circuit VR220 (VT/OG), harness side and ground.
      • C3260-1, circuit VR220 (VT/OG), harness side and C3260-2, circuit RR134 (BN/BU), harness side.
      Fig 2: Checking Passenger Second Row C-Pillar Side Impact Sensor Feed Circuit For Short To Ground And Short Between Sensor Circuits
      G06255036Courtesy of FORD MOTOR CO.
    • Are the resistances greater than 10,000 ohms? 
    • Yes  : GO to  N14.
    • No  : REPAIR circuit VR220 (VT/OG) and/or RR134 (BN/BU). GO to  N16.
  6. N6 CHECK THE DRIVER FIRST ROW B-PILLAR SIDE IMPACT SENSOR CIRCUITS FOR A SHORT TO VOLTAGE (NO OPERATION INDICATED) 
    • Ignition OFF.
    • Depower the SRS  . Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
    • Disconnect: RCM  C310A and C310B.
    • Disconnect: Driver First Row B-Pillar Side Impact Sensor C3057.
    • 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 driver first row B-pillar side impact sensor:
      • C3057-1, circuit VR217 (GY/YE), harness side and ground.
      • C3057-2, circuit RR131 (VT/GY), harness side and ground.
      Fig 3: Checking Driver First Row B-Pillar Side Impact Sensor Circuits For Short To Voltage (No Operation Indicated)
      G06063751Courtesy of FORD MOTOR CO.
    • Is voltage present on either circuit? 
    • Yes  : REPAIR circuit VR217 (GY/YE) or RR131 (VT/GY). GO to  N16.
    • No  : GO to N7  .
  7. N7 CHECK THE PASSENGER SECOND ROW C-PILLAR SIDE IMPACT SENSOR CIRCUITS FOR A SHORT TO VOLTAGE (NO OPERATION INDICATED) 
    • Ignition OFF.
    • Depower the SRS. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
    • Disconnect: Passenger Second Row C-Pillar Side Impact Sensor C3260.
    • Repower the SRS. Do not  prove out at this time. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
    • Ignition ON.
    • Measure the voltage between passenger second row C-pillar side impact sensor:
      • C3260-1, circuit VR220 (VT/OG), harness side and ground.
      • C3260-2, circuit RR134 (BN/BU), harness side and ground.
      Fig 4: Checking Passenger Second Row C-Pillar Side Impact Sensor Circuits For Short To Voltage (No Operation Indicated)
      G06063751Courtesy of FORD MOTOR CO.
    • Is voltage present on either circuit? 
    • Yes  : REPAIR circuit VR220 (VT/OG) or RR134 (BN/BU). GO to  N16.
    • No  : GO to  N14.
  8. N8 CHECK THE DRIVER FIRST ROW B-PILLAR SIDE IMPACT SENSOR AND RCM CONNECTIONS (NO OPERATION INDICATED) 
    • 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.
    • Gain access to the driver first row B-pillar side impact sensor and inspect C3057 to be fully seated and locked. Seat and lock the connector as necessary. Refer to SIDE IMPACT SENSOR - B-PILLAR .
    • Gain access to the RCM  and inspect C310A and C310B to be fully seated and locked. Seat and lock the connector(s) as necessary. Refer to RESTRAINTS CONTROL MODULE (RCM) .
    • Ignition ON.
    • Enter the following diagnostic mode on the scan tool: Self Test - RCM. 
    • Was DTC B0091:93 retrieved on-demand during self-test? 
    • Yes  : GO to N9  .
    • No  : Fault corrected. GO to  N16.
  9. N9 CHECK THE DRIVER FIRST ROW B-PILLAR SIDE IMPACT SENSOR CIRCUITS FOR AN OPEN (NO OPERATION INDICATED) 
    • Ignition OFF.
    • Depower the SRS  . Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
    • Disconnect: RCM  C310A and C310B.
    • Disconnect: Driver First Row B-Pillar Side Impact Sensor C3057.
    • Measure the resistance between RCM  C310B, harness side and driver first row B-pillar side impact sensor C3057, harness side using the following chart.
      RCM REFERENCE CHART

      RCM  Circuit Driver First Row B-Pillar Side Impact Sensor
      C310B-36 VR217 (GY/YE) C3057-1
      C310B-35 RR131 (VT/GY) C3057-2
      Fig 5: Measuring Resistance Between RCM C310B And Driver First Row B-Pillar Side Impact Sensor C3057, Harness Side
      G06100061Courtesy of FORD MOTOR CO.
    • Are the resistances less than 0.5 ohm? 
    • Yes  : GO to N10  .
    • No  : REPAIR circuit VR217 (GY/YE) or RR131 (VT/GY). GO to  N16.
  10. N10 CHECK THE LEFT SIDE RESTRAINTS SENSOR 1 DTC FOR A FAULT STATUS CHANGE (NO OPERATION 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 first row B-pillar side impact sensor C3057-1, circuit VR217 (GY/YE), harness side and C3057-2, circuit RR131 (VT/GY), 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. 
    • Did the DTC change from B0091:93 to B0091:11 and B0097:11? 
  11. N11 CHECK THE PASSENGER SECOND ROW C-PILLAR SIDE IMPACT SENSOR AND RCM CONNECTIONS (NO OPERATION INDICATED) 
    • 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.
    • Gain access to the passenger second row C-pillar side impact sensor and inspect C3260 to be fully seated and locked. Seat and lock the connector as necessary. Refer to SIDE IMPACT SENSOR - C-PILLAR .
    • Gain access to the RCM  and inspect C310A and C310B to be fully seated and locked. Seat and lock the connector(s) as necessary. Refer to RESTRAINTS CONTROL MODULE (RCM) .
    • Ignition ON.
    • Enter the following diagnostic mode on the scan tool: Self Test - RCM. 
    • Was DTC B0097:93 retrieved on-demand during self-test? 
    • Yes  : GO to N12 
    • No  : Fault corrected. GO to  N16.
  12. N12 CHECK THE PASSENGER SECOND ROW C-PILLAR SIDE IMPACT SENSOR CIRCUITS FOR AN OPEN (NO OPERATION INDICATED) 
    • Ignition OFF.
    • Depower the SRS  . Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
    • Disconnect: RCM  C310A and C310B.
    • Disconnect: Passenger Second Row C-Pillar Side Impact Sensor C3260.
    • Measure the resistance between RCM  C310B, harness side and passenger second row C-pillar side impact sensor C3260, harness side using the following chart.
      RCM REFERENCE CHART

      RCM  Circuit Passenger Second Row C-pillar Side Impact Sensor
      C310B-37 VR220 (VT/OG) C3260-1
      C310B-38 RR134 (BN/BU) C3260-2
      Fig 6: Checking Passenger Second Row C-Pillar Side Impact Sensor Circuits For Open (No Operation Indicated)
      G06257542Courtesy of FORD MOTOR CO.
    • Are the resistances less than 0.5 ohm? 
    • Yes  : GO to N13  .
    • No  : REPAIR circuit VR220 (VT/OG) or RR134 (BN/BU). GO to  N16.
  13. N13 CHECK THE RIGHT SIDE RESTRAINTS SENSOR 2 DTC FOR A FAULT STATUS CHANGE (NO OPERATION 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 passenger second row C-pillar side impact sensor C3260-1, circuit VR220 (VT/OG), harness side and C3260-2, circuit RR134 (BN/BU), 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. 
    • Did the DTC change from B0097:93 to B0097:11 and B0091:11? 
  14. N14 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 .
    • Remove the fused jumper wire from the driver first row B-pillar side impact sensor (if previously installed).
    • Remove fused jumper wire from passenger second row C-pillar side impact sensor (if previously installed).
    • 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 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.

    • Connect: RCM  C310A and C310B.
    • Connect: Driver First Row B-Pillar Side Impact Sensor C3057 (if previously disconnected).
    • Connect: Passenger Second Row C-Pillar Side Impact Sensor C3260 (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  N16.
    • 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 N15  .
  15. N15 CHECK FOR AN INTERMITTENT FAULT 
    • Ignition OFF.
    • Depower the SRS  . Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
    • Disconnect: Affected Driver First Row B-Pillar Side Impact Sensor C3057 and/or Passenger Second Row C-Pillar Side Impact Sensor C3260.
    • Disconnect: RCM  C310A and C310B.
    • Inspect for the following:
      • inspect harness and component connectors for 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 appropriate SYSTEM WIRING DIAGRAMS article for schematic and connector information.

    • Connect: All Previously Disconnected Component(s)/Connector(s).
    • 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 DTC B0091:11, B0091:93, B0097:11 or B0097:93 retrieved on-demand during self-test? 
    • Yes  : Fault(s) cannot be cleared until corrected and the DTC is no longer retrieved on-demand during self-test.

      For DTC B0091:11 AND  B0097:11, GO to  N2.

      For DTC B0091:93 AND  B0097:93, GO to  N6.

      For DTC B0091:93 ONLY  , GO to  N8.

      For DTC B0097:93 ONLY  , GO to  N11.

    • 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 N16  .
  16. N16 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  .
    • Was 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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