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Home >> Ford >> 2021 >> Expedition Platinum, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 34 (Climate Control System - General Information) >> Diagnosis And Testing >> Climate Control System - Vehicles With: Dual Automatic Temperature Control (DATC) >> Pinpoint Test(s) >> Pinpoint Test O : B1A63:11, B1A63:15, B1A64:11, B1A64:15 >> Pinpoint Test O : B1A63:11, B1A63:15, B1A64:11, B1A64:15

Pinpoint Test O : B1A63:11, B1A63:15, B1A64:11, B1A64:15

WARNING: This page is about a different car, the 2018 Ford F-550 Super Duty, 2018 Ford F-450 Super Duty, 2018 Ford F-350 Super Duty, and 2018 Ford F-250 Super Duty. 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. O1 CHECK THE SUNLOAD SENSOR CIRCUITS FOR A SHORT TO VOLTAGE

    • Ignition OFF.

    • Disconnect Autolamp/sunload sensor C286 .

    • Ignition ON.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C286-1
      GFD200696Courtesy of FORD MOTOR COMPANY
      		 Ground
      C286-2
      GFD200696Courtesy of FORD MOTOR COMPANY
      		 Ground
      C286-3
      GFD200696Courtesy of FORD MOTOR COMPANY
      		 Ground
      C286-4
      GFD200696Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is any voltage present? 

    Yes  REPAIR the circuit.
    No  GO to  O2

  2. O2 CHECK THE SUNLOAD SENSOR CIRCUITS FOR A SHORT TO GROUND

    • Ignition OFF.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C286-1
      GFD205623Courtesy of FORD MOTOR COMPANY
      		 Ground
      C286-2
      GFD205623Courtesy of FORD MOTOR COMPANY
      		 Ground
      C286-3
      GFD205623Courtesy of FORD MOTOR COMPANY
      		 Ground
      C286-4
      GFD205623Courtesy of FORD MOTOR COMPANY
      		 Ground

    Are the resistances greater than 10, 000 ohms? 

    Yes  GO to  O3
    No  REPAIR the circuit.

  3. O3 CHECK THE SUNLOAD SENSOR SIGNAL CIRCUITS FOR AN OPEN

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C286-1
      GFD205623Courtesy of FORD MOTOR COMPANY
      		 C2402B-22
      C286-3
      GFD205623Courtesy of FORD MOTOR COMPANY
      		 C2402B-21

      Positive Lead Measurement / Action Negative Lead
      C286-2
      GFD205623Courtesy of FORD MOTOR COMPANY
      		 C2280B-24
      C286-4
      GFD205623Courtesy of FORD MOTOR COMPANY
      		 C2280B-22

    Are the resistances less than 3 ohms? 

    Yes  GO to  O4
    No  REPAIR the circuit.

  4. O4 CHECK THE SUNLOAD SENSOR SIGNAL CIRCUITS FOR A SHORT TO EACH OTHER

    Are the resistances greater than 10, 000 ohms? 

    Yes  INSTALL a new sunload sensor. Refer to: Sunload Sensor . TEST the system for normal operation. If the concern is still present, GO to  O5
    No  REPAIR the circuit.

  5. O5 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 all 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, Refer to FCIM Hardware Testing.
    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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