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Home >> Lincoln >> 2009 >> MKX FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 2246 (Supplemental Restraint System) >> Diagnosis And Testing >> Air Bag and Safety Belt Pretensioner Supplemental Restraint System (SRS) >> Pinpoint Test - Supplemental Restraint System (SRS) >> Pinpoint Test AC: DTCs B0001:2B, B0002:2B, B0004:2B, B0010:2B, B0011:2B, B0020:2B, B0021:2B, B0028:2B, B0029:2B, B0050:2B, B0052:2B, B00B5:2B, B1211:2B and B1214:2B >> PINPOINT TEST AC: DTCs B0001:2B, B0002:2B, B0004:2B, B0010:2B, B0011:2B, B0020:2B, B0021:2B, B0028:2B, B0029:2B, B0050:2B, B0052:2B, B00B5:2B, B1211:2B AND B1214:2B

PINPOINT TEST AC: DTCs B0001:2B, B0002:2B, B0004:2B, B0010:2B, B0011:2B, B0020:2B, B0021:2B, B0028:2B, B0029:2B, B0050:2B, B0052:2B, B00B5:2B, B1211:2B AND B1214:2B

WARNING: This page is about a different car, the 2011 Mercury Milan, 2011 Lincoln MKZ, and 2011 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.
WARNING: Never disassemble or tamper with safety belt buckle/retractor pretensioners, adaptive load limiting retractors, safety belt inflators, or probe the electrical connectors. Failure to follow this instruction may result in the accidental deployment of the safety belt pretensioners, adaptive load limiting retractors, or safety belt inflators, 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. AC1 RETRIEVE RCM DTCs 
    • Ignition ON.
    • Enter the following diagnostic mode on the scan tool: Self Test - RCM.
    • Were any signal cross coupled DTCs retrieved on-demand during self-test? 
    • Yes  : This fault cannot be cleared until it is corrected and the DTC is no longer retrieved during the on-demand self test. GO to AC2  .
    • No  : This is an intermittent fault when present as a CMDTC only. GO to  AC4.
  2. AC2 CHECK THE DEPLOYABLE CIRCUITS FOR A SIGNAL CROSS COUPLED FAULT 
    • Ignition OFF.
    • Depower the SRS. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING  in this service information.
    • Disconnect: RCM C310A and C310B.
    • Disconnect ALL of the affected  SRS devices.
      • NOTE: Most signal cross coupled faults are due to connector and/or wire harness damage. Carry out a thorough inspection of connector(s) and/or wiring harnesses for damage.
    • Using the following table, measure the resistance between the circuits of the affected SRS components.
      CIRCUIT REFERENCE TABLE

      Device/Loop (DTC) Connector Circuit
      Driver air bag module stage 1 (B0001:2B)
      • Driver air bag module stage 1 electrical connector
      • CR101 (VT/BN)
      • RR101 (YE/GN)
      Driver air bag module stage 2 (B0002:2B)
      • Driver air bag module stage 2 electrical connector
      • CR102 (BU)
      • RR102 (WH)
      Driver knee air bag module (B0004:2B)
      • C2303-1
      • C2303-2
      • CR139 (VT/WH)
      • RR139 (YE)
      Passenger air bag module stage 1 (B0010:2B)
      • C256A-1
      • C256A-2
      • CR103 (GY/BU)
      • RR103 (VT/GN)
      Passenger air bag module stage 2 (B0011:2B)
      • C256B-1
      • C256B-2
      • CR104 (YE/GY)
      • RR104 (WH/BU)
      Driver seat side air bag module (B0020:2B)
      • C328-1
      • C328-2
      • RR105 (GY/YE)
      • CR105 (GN/BN)
      Driver side air curtain module (B0021:2B)
      • C3055-1
      • C3055-2
      • CR109 (BN/BU)
      • RR109 (BU/GN)
      Passenger seat side air bag module (B0028:2B)
      • C314-1
      • C314-2
      • RR106 (YE/OG)
      • CR106 (VT/GY)
      Passenger side air curtain module (B0029:2B)
      • C3056-1
      • C3056-3
      • CR111 (BN/WH)
      • RR111 (YE/VT)
      Driver safety belt buckle switch (B0050:2B)
      • C3296-2
      • -
      • CR201 (GN/BU)
      • -
      Passenger safety belt buckle switch (B0052:2B)
      • C3301-2
      • -
      • CR203 (GY/VT)
      • -
      Driver seat track position sensor (B00B5:2B)
      • C356-2
      • -
      • VR215 (YE/VT)
      • -
      Driver safety belt retractor pretensioner (B1211:2B)
      • C323-1
      • C323-2
      • CR120 (BU/OG)
      • RR120 (BN/GN)
      Passenger safety belt retractor pretensioner (B1214:2B)
      • C3202-1
      • C3202-2
      • CR122 (WH/OG)
      • RR122 (BN)
    • Are the resistances greater than 10,000 ohms between the affected circuits? 
    • Yes  : GO to AC3  .
    • No  : REPAIR the affected circuits. Refer to SYSTEM WIRING DIAGRAMS article for schematic and connector information. GO to  AC5.
  3. AC3 CONFIRM THE RCM FAULT 
    NOTE: Make sure all restraint system components, sensor electrical connectors and the RCM electrical connectors are connected before carrying out the self-test. If not, DTCs will be recorded.
    • 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 C310A and C310B Connector Position Assurance (CPA) lever/lock for correct operation. Refer to RESTRAINTS CONTROL MODULE (RCM)  in this service information.
      • repair any concerns found. Refer to SYSTEM WIRING DIAGRAMS article for schematic and connector information.
    • Connect: All Previously Disconnected Restraint System Component(s).
    • 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  in this service information.
    • Ignition ON.
    • Enter the following diagnostic mode on the scan tool: Self Test - RCM.
    • Were any signal cross coupled DTCs retrieved on-demand during self-test? 
    • Yes  : INSTALL a new RCM. REFER to RESTRAINTS CONTROL MODULE (RCM)  in this service information. GO to  AC5.
    • 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 AC4  .
  4. AC4 CHECK FOR AN INTERMITTENT FAULT 
    NOTE: Most cross link faults are due to connector and/or wiring harness damage. Carry out a thorough inspection of connector(s) and/or wiring harness for damage.
    • Yes  : This fault cannot be cleared until it is corrected and the DTC is no longer retrieved on-demand during self-test. GO to  AC2.
    • No  : The fault is not present and cannot be recreated at this time.

      CHECK for causes of the intermittent fault. ATTEMPT to recreate the hard fault by flexing the wire harness and cycling the ignition frequently. 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 AC5  .

  5. AC5 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  in this service information.
    • 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 Occupant Classification System Module (OCSM).
    • Are any RCM and/or OCSM retrieved on-demand during self-test? 
    • Yes  : Do not clear any DTCs until all DTCs have been resolved. GO to the DTC TABLES  in this service information for pinpoint test direction.
    • No  : CLEAR all RCM and OCSM DTCs. PROVE OUT the SRS. Repair is complete. RETURN the vehicle to the customer.
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