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Pinpoint Test P : B1B71:11, B1B71:15

WARNING: This page is about a different car, the 2016 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

  1. P1 CHECK THE EVAPORATOR TEMPERATURE SENSOR CIRCUITS FOR A SHORT TO VOLTAGE

    • Ignition OFF.
    • Disconnect evaporator temperature sensor C296 .
    • Ignition ON.
    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C296-1
      GFD38392Courtesy of FORD MOTOR COMPANY
      		 Ground
      C296-2
      GFD38392Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is any voltage present? 

    Yes  REPAIR the circuit in question.
    No  GO to  P2

  2. P2 CHECK THE EVAPORATOR TEMPERATURE SENSOR CIRCUITS FOR A SHORT TO GROUND

    • Ignition OFF.
    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C296-1
      GFD38391Courtesy of FORD MOTOR COMPANY
      		 Ground
      C296-2
      GFD38391Courtesy of FORD MOTOR COMPANY
      		 Ground

    Are the resistances greater than 10, 000 ohms? 

    Yes  GO to  P3
    No  REPAIR the circuit in question.

  3. P3 CHECK THE EVAPORATOR TEMPERATURE SENSOR CIRCUITS FOR AN OPEN

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C2402A-2
      GFD38391Courtesy of FORD MOTOR COMPANY
      		 C296-1
      C2402A-19
      GFD38391Courtesy of FORD MOTOR COMPANY
      		 C296-2

    Are the resistances less than 3 ohms? 

    Yes  GO to  P4
    No  REPAIR the circuit in question.

  4. P4 CHECK THE EVAPORATOR TEMPERATURE SENSOR CIRCUITS FOR A SHORT TOGETHER

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C296-1
      GFD38391Courtesy of FORD MOTOR COMPANY
      		 C296-2

    Is the resistance greater than 10, 000 ohms? 

    Yes  INSTALL a new evaporator temperature sensor. Refer to: Evaporator Temperature Sensor . TEST the system for normal operation. If the concern is still present, GO to  P5
    No  REPAIR the circuits.

  5. P5 CHECK FOR CORRECT FCIM (FRONT CONTROLS INTERFACE MODULE) OPERATION

    • Ignition OFF.
    • Disconnect and inspect all FCIM connectors.
    • Repair:
      • corrosion (install new connector or terminals - clean module pins)
      • damaged or bent pins - install new terminals/pins
      • pushed-out pins - install new pins as necessary
    • Reconnect FCIM connectors. Make sure they seat and latch correctly.
    • Operate the system and determine if the concern is still present.

    Is the concern still present? 

    Yes  CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new FCIM. Refer to the appropriate Information and Entertainment Systems article for the procedure.
    No  The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.
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