LEMON Manuals: Even more car manuals for everyone
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 Q : DTCs B1415:11, B1415:93, B1418:11 AND B1418:93 >> PINPOINT TEST Q : DTCs B1415:11, B1415:93, B1418:11 AND B1418:93

PINPOINT TEST Q : DTCs B1415:11, B1415:93, B1418:11 AND B1418:93

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. Q1 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.
    • Using a diagnostic scan tool, perform RCM self-test.

    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 B1415:11
    AND  B1418:11, GO to Q2  . For DTC B1415:93
    AND  B1418:93, GO to Q6  . For DTC B1415:93,
    ONLY  , GO to Q8  . For DTC B1418:93,
    ONLY  , GO to Q11  . For any other DTCs, REFER to the DTC Chart.
    No  The fault is intermittent when present as a CMDTC only. GO to  Q15.

  9. Q2 CHECK THE DRIVER SIDE RESTRAINTS SENSOR 2 DTC FOR A FAULT STATUS CHANGE (SHORT TO GROUND INDICATED)

    NOTE: This pinpoint test step attempts 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 LH C-pillar Side Impact Sensor C3210 .
    • Ignition ON.
    • Using a diagnostic scan tool, perform RCM self-test.

    Did the on-demand DTC change from B1415:11 and B1418:11 to B1415:93? 

    Yes  INSTALL a new LH C-pillar side impact sensor. REFER to Side Impact Sensor - C-Pillar . GO to  Q16.
    No  GO to  Q3.

  10. Q3 CHECK THE PASSENGER SIDE RESTRAINTS SENSOR 1 DTC FOR A FAULT STATUS CHANGE (SHORT TO GROUND INDICATED)

    NOTE: This pinpoint test step attempts 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.
    • Connect LH C-Pillar Side Impact Sensor C3210 .
    • Disconnect Passenger Door Side Impact Sensor C644 .
    • Ignition ON.
    • Using a diagnostic scan tool, perform RCM self-test.

    Did the on-demand DTC change from B1415:11 and B1418:11 to B1418:93? 

    Yes  INSTALL a new passenger front door side impact sensor. REFER to Side Impact Sensor - Front Door . GO to  Q16.
    No  GO to  Q4.

  11. Q4 CHECK THE LH C-PILLAR SIDE IMPACT SENSOR FEED CIRCUIT FOR A SHORT TO GROUND AND SHORT BETWEEN SENSOR CIRCUITS

    • Ignition OFF.
    • Disconnect LH C-Pillar Side Impact Sensor C3210 .
    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C3210-1
      GFD134423Courtesy of FORD MOTOR COMPANY
      		 Ground
    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C3210-1
      GFD134423Courtesy of FORD MOTOR COMPANY
      		 C3210-2

    Are the resistances greater than 10, 000 ohms? 

    Yes  GO to  Q5.
    No  REPAIR the affected circuit(s). Refer to Connector Repair Procedures for schematic and connector information. Go to  Q16.

  12. Q5 CHECK THE PASSENGER FRONT DOOR SIDE IMPACT SENSOR FEED CIRCUIT FOR A SHORT TO GROUND AND SHORT BETWEEN SENSOR CIRCUITS

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C644-1
      GFD134423Courtesy of FORD MOTOR COMPANY
      		 Ground
    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C644-1
      GFD134423Courtesy of FORD MOTOR COMPANY
      		 C644-2

    Are the resistances greater than 10, 000 ohms? 

    Yes  GO to  Q14.
    No  REPAIR the affected circuit(s). Refer to Connector Repair Procedures for schematic and connector information. Go to  Q16.

  13. Q6 CHECK THE LH C-PILLAR SIDE IMPACT SENSOR FEED CIRCUIT FOR A SHORT TO VOLTAGE (NO OPERATION INDICATED)

    • Ignition OFF.
    • Disconnect LH C-Pillar Side Impact Sensor C3210 .
    • Ignition ON.
    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C3210-1
      GFD134422Courtesy of FORD MOTOR COMPANY
      		 Ground
      C3210-2
      GFD134422Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is any voltage present? 

    Yes  REPAIR the affected circuit(s). Refer to Connector Repair Procedures for schematic and connector information. Go to  Q16.
    No  GO to  Q7.

  14. Q7 CHECK THE PASSENGER FRONT DOOR SIDE IMPACT SENSOR FEED CIRCUIT FOR A SHORT TO VOLTAGE (NO OPERATION INDICATED)

    • Ignition OFF.
    • Disconnect Passenger Door Side Impact Sensor C644 .
    • Ignition ON.
    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C644-1
      GFD134422Courtesy of FORD MOTOR COMPANY
      		 Ground
      C644-2
      GFD134422Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is any voltage present? 

    Yes  REPAIR the affected circuit(s). Refer to Connector Repair Procedures for schematic and connector information. Go to  Q16.
    No  GO to  Q14.

  15. Q8 CHECK THE LH C-PILLAR SIDE IMPACT SENSOR AND RCM CONNECTIONS (NO OPERATION INDICATED)

    • Ignition OFF.
    • Gain access to the second row LH side impact sensor and inspect C3210 to be fully seated and locked. Seat and lock the connector as necessary. Refer to Side Impact Sensor - C-Pillar .
    • Ignition ON.
    • Using a diagnostic scan tool, perform RCM self-test.

    Was DTC B1415:93 retrieved on-demand during self-test? 

    Yes  GO to  Q9.
    No  Fault corrected. GO to  Q16.

  16. Q9 CHECK THE SECOND ROW LH SIDE IMPACT SENSOR CIRCUITS FOR AN OPEN (NO OPERATION INDICATED)

    • Ignition OFF.
    • Disconnect LH C-Pillar Side Impact Sensor C3210 .
    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C310B-33
      GFD134423Courtesy of FORD MOTOR COMPANY
      		 C3210-1
      C310B-34
      GFD134423Courtesy of FORD MOTOR COMPANY
      		 C3210-2

    Are the resistances less than 0.5 ohm? 

    Yes  GO to  Q10.
    No  REPAIR the affected circuit(s). Refer to Connector Repair Procedures for schematic and connector information. Go to  Q16.

  17. Q10 CHECK THE DRIVER SIDE RESTRAINTS SENSOR 2 DTC FOR A FAULT STATUS CHANGE (NO OPERATION INDICATED)

    NOTE: This pinpoint test step attempts 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 a fused jumper wire:
      Positive Lead Measurement / Action Negative Lead
      C3210-1
      GFD135987Courtesy of FORD MOTOR COMPANY
      		 C3210-2
    • Ignition ON.
    • Using a diagnostic scan tool, perform RCM self-test.

    Did the DTC change from B1415:93 to B1415:11 and B1418:11? 

    Yes  REMOVE the fused jumper wire and INSTALL a new LH C-pillar side impact sensor. REFER to Side Impact Sensor - C-Pillar . GO to  Q16.
    No  REMOVE the fused jumper wire and GO to  Q14.

  18. Q11 CHECK THE PASSENGER FRONT DOOR SIDE IMPACT SENSOR AND RCM CONNECTIONS (NO OPERATION INDICATED)

    • Ignition OFF.
    • Gain access to passenger front door side impact sensor and inspect C644 to be fully seated and locked. Seat and lock the connector as necessary. Refer to Side Impact Sensor - Front Door .
    • Ignition ON.
    • Using a diagnostic scan tool, perform RCM self-test.

    Was DTC B1418:93 retrieved on-demand during self-test? 

    Yes  GO to  Q12.
    No  Fault corrected. GO to  Q16.

  19. Q12 CHECK THE PASSENGER FRONT DOOR SIDE IMPACT SENSOR CIRCUITS FOR AN OPEN (NO OPERATION INDICATED)

    • Ignition OFF.
    • Disconnect Passenger Door Side Impact Sensor C644 .
    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C310B-45
      GFD134423Courtesy of FORD MOTOR COMPANY
      		 C644-1
      C310B-46
      GFD134423Courtesy of FORD MOTOR COMPANY
      		 C644-2

    Are the resistances less than 0.5 ohm? 

    Yes  GO to  Q13.
    No  REPAIR the affected circuit(s). Refer to Connector Repair Procedures for schematic and connector information. Go to  Q16.

  20. Q13 CHECK THE PASSENGER SIDE RESTRAINTS SENSOR 1 DTC FOR A FAULT STATUS CHANGE (NO OPERATION INDICATED)

    NOTE: This pinpoint test step attempts 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 a fused jumper wire:
      Positive Lead Measurement / Action Negative Lead
      C644-1
      GFD135987Courtesy of FORD MOTOR COMPANY
      		 C644-2
    • Ignition ON.
    • Using a diagnostic scan tool, perform RCM self-test.

    Did the DTC change from B1418:93 to B1415:11 and B1418:11? 

    Yes  REMOVE the fused jumper wire and INSTALL a new passenger front door side impact sensor. REFER to Side Impact Sensor - Front Door . GO to  Q16.
    No  REMOVE the fused jumper wire and GO to  Q14.

  21. Q14 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.
    • 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.
    • Connect LH C-Pillar Side Impact Sensor C3210 (if previously disconnected).
    • Connect Passenger Door Side Impact Sensor C644 (if previously disconnected).
    • Ignition ON.
    • Using a diagnostic scan tool, perform RCM self-test.

    Was the original DTC 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  Q16.
    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  Q15.

  22. Q15 CHECK FOR AN INTERMITTENT FAULT

    • Ignition OFF.
    • Disconnect LH C-Pillar Side Impact Sensor C3210 .
    • Disconnect Passenger Front Door Side Impact Sensor C644 .
    • 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.
    • Connect LH C-Pillar Side Impact Sensor C3210 .
    • Connect Passenger Front Door Side Impact Sensor C644 .
    • Ignition ON.
    • Using a diagnostic scan tool, perform RCM self-test.

    Was DTC B1415:11, B1415:93, B1418:11 or B1418:93 retrieved on-demand during self-test? 

    Yes  The fault(s) cannot be cleared until corrected and the DTC is no longer retrieved on-demand during self-test. For DTC B1415:11
    AND  B1418:11, GO to Q2  . For DTC B1415:93
    AND  B1418:93, GO to Q6  . For DTC B1415:93,
    ONLY  , GO to Q8  . For DTC B1418:93,
    ONLY  , GO to Q11  .
    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  Q16.

  23. Q16 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.
scientia non olet · About LEMON Manuals