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Home >> Lincoln >> 2018 >> MKZ Select, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 553 (Supplemental Restraint System) >> Diagnosis And Testing >> Airbag and Safety Belt Pretensioner Supplemental Restraint System (SRS) >> Pinpoint Test >> PINPOINT TEST R : B0001:2B, B0002:2B, B0010:2B, B0011:2B, B0050:2B, B0052:2B, B007E:2B, B007F:2B, B00B5:2B, B1404:2B, B1405:2B, B1407:2B and B1408:2B >> PINPOINT TEST R : B0001:2B, B0002:2B, B0010:2B, B0011:2B, B0050:2B, B0052:2B, B007E:2B, B007F:2B, B00B5:2B, B1404:2B, B1405:2B, B1407:2B and B1408:2B

PINPOINT TEST R : B0001:2B, B0002:2B, B0010:2B, B0011:2B, B0050:2B, B0052:2B, B007E:2B, B007F:2B, B00B5:2B, B1404:2B, B1405:2B, B1407:2B and B1408:2B

WARNING: This page is about a different car, the 2017 Lincoln Navigator and 2017 Ford Expedition. However, it is still accessible from the selected car via links, so may be relevant.
  1. WARNING: Incorrect repair techniques or actions can cause an accidental Supplemental Restraint System (SRS) deployment. Never compromise or depart from these instructions. Failure to precisely follow all instructions could result in serious personal injury from an accidental deployment.
  2. 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.
  3. NOTE: Most faults are due to connector and/or wiring concerns. Carry out a thorough inspection and verification before proceeding with the pinpoint test.
  4. NOTE: Only disconnect or reconnect SRS components when instructed to do so within a pinpoint test step. Failure to follow this instruction may result in incorrect diagnosis of the SRS.
  5. 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 parts catalog to make sure the correct component is being installed. If an incorrect SRS component is installed, DTCs may set.
  6. NOTE: The SRS must be fully operational and free of faults before releasing the vehicle to the customer.
  7. NOTE: Do not probe any impact sensor. The impact sensor cannot be tested using a multi-meter.

  8. R1 RETRIEVE RCM DTCs

    • WARNING: Before beginning any service procedure, refer to Safety Warnings in Service Information

      REFER to Safety Belt and SRS Health and Safety Precautions in Description and Operation in Service Information .

    • Ignition ON.
    • NOTE: Signal cross-coupled DTCs are only retrieved in pairs.

      Using a diagnostic scan tool, perform RCM self-test.

    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  R2.
    No  This is an intermittent fault when present as a CMDTC only. GO to  R4.

  9. R2 CHECK THE AFFECTED DEPLOYABLE CIRCUITS FOR A SIGNAL CROSS COUPLED FAULT

    • Ignition OFF.
    • Using the signal cross coupled DTCs present on-demand, identify the affected SRS devices.
    • NOTE: Most signal cross coupled faults are due to connector and/or wiring harness damage. Carry out a thorough inspection of connector(s) and/or wiring harness for damage.

      Disconnect all of the affected SRS devices.

    • Using the following table, measure the resistance between the circuits of one affected SRS device to the other affected SRS device.
      • Example: If DTCs B0001:2B and B0002:2B are being diagnosed, measure the resistance between circuit CR101 to circuits CR102 and RR102. Then measure the resistance between circuit RR101 to circuits CR102 and RR102.
      Device/Loop (DTC) Connector
      Driver airbag stage 1 (B0001:2B) C216A-1
      C216A-2
      Driver airbag stage 2 (B0002:2B) C216B-1
      C216B-2
      Passenger airbag stage 1 (B0010:2B) C256-3
      C256-4
      Passenger airbag stage 2 (B0011:2B) C256-1
      C256-2
      Driver safety belt buckle switch (B0050:2B) C3065-3
      Passenger safety belt buckle switch (B0052:2B) C3066-3
      Driver safety belt retractor pretensioner (B007E:2B) C323-1
      C323-2
      Passenger safety belt retractor pretensioner (B007F:2B) C303-1
      C303-2
      Driver seat track position sensor (B00B5:2B) C356-2
      Driver side airbag (B1404:2B) C3051-1
      C3051-2
      LH side air curtain (B1405:2B) C9006-1
      C9006-3
      Passenger side airbag (B1407:2B) C3052-1
      C3052-2
      RH side air curtain (B1408:2B) C9007-1
      C9007-3

    Are the resistances greater than 10, 000 ohms between the affected circuits? 

    Yes  GO to  R3.
    No  REPAIR the affected circuits. Refer to Connector Repair Procedures for schematic and connector information. Go to  R5.

  10. R3 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.

    • Prior to reconnecting any previously disconnected SRS component:
      • Inspect connector(s) (including any inline 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.

    • Connect all previously disconnected SRS components.
    • Ignition ON.
    • Using a diagnostic scan tool, perform RCM self-test.

    Were any signal cross coupled DTCs retrieved on-demand during self-test? 

    Yes  CHECK OASIS for any applicable TSBs. If a TSB exists for this concern, discontinue this test and follow TSB instructions. If no TSBs address this concern, INSTALL a new RCM. REFER to Restraints Control Module (RCM) . GO to  R5.
    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  R4.

  11. R4 CHECK FOR AN INTERMITTENT FAULT

    NOTE: Most cross coupled faults are due to connector and/or wiring harness damage. Carry out a thorough inspection of connector(s) and/or wiring harness for damage.

    • Ignition OFF.
    • Disconnect

      ALL of the affected 

      SRS devices.

    • Inspect the wiring harness(es) for any type of damage. Repair as necessary. Refer to Supplemental Restraint System , for schematic and connector information.
    • Ignition ON.
    • Using a diagnostic scan tool, perform RCM self-test.

    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 on-demand during self-test. GO to  R2.
    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  R5.

  12. R5 CHECK FOR ADDITIONAL SRS DTCs

    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.

    • Ignition OFF.
    • Reconnect all SRS components (if previously disconnected).
    • Ignition ON.
    • Using a diagnostic scan tool, perform RCM self-test.

    Are any RCM DTCs retrieved on-demand during self-test? 

    Yes  Do not clear any DTCs until all DTCs have been resolved. DIAGNOSE and REPAIR the RCM DTCs. REFER to Restraints Control Module (RCM) DTC Chart  for pinpoint test direction.
    No  The repair is complete. RETURN the vehicle to the customer.
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