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Home >> Ford >> 2020 >> Fusion Titanium Hybrid >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 49 (Climate Control System - General Information (1 Of 2) (Except Hybrid)) >> Diagnosis And Testing >> Climate Control System - Vehicles With: Dual Automatic Temperature Control (DATC) >> Pinpoint Tests >> Pinpoint Test M : Air Discharge Temperature Sensor Circuit Faults

Pinpoint Test M : Air Discharge Temperature Sensor Circuit Faults

WARNING: This page is about a different variant/trim than selected.
  1. Refer to Automatic Climate Control System for schematic and connector information.

    Normal Operation and Fault Conditions 

    The air discharge sensors supply a varying voltage to the FCIM based on the temperature of the air being discharged from the vent. The module adjusts the system based on the voltage from each sensor.

    Each air discharge sensor is supplied voltage from the module and all sensors share a common sensor ground. An open, a short to ground, a short to voltage on one or more of these circuits or a failed air discharge sensor causes the FCIM to set one or more Diagnostic Trouble Codes (DTCs).

    DTC Fault Trigger Conditions 

    DTC Description Fault Trigger Condition
    FCIM B10B3:11 Right Panel Air Discharge Temperature: Circuit Short To Ground Module senses erratic voltages from the right panel air discharge temperature sensor.
    FCIM B10B3:15 Right Panel Air Discharge Temperature: Circuit Short To Battery Or Open Module senses erratic voltages from the right panel air discharge temperature sensor.
    FCIM B10B4:11 Right Floor Air Discharge Temperature: Circuit Short To Ground Module senses erratic voltages from the right floor air discharge temperature sensor.
    FCIM B10B4:15 Right Floor Air Discharge Temperature: Circuit Short To Battery Or Open Module senses erratic voltages from the right floor air discharge temperature sensor.
    FCIM B10B5:11 Left Panel Air Discharge Temperature: Circuit Short To Ground Module senses erratic voltages from the left panel air discharge temperature sensor.
    FCIM B10B5:15 Left Panel Air Discharge Temperature: Circuit Short To Battery Or Open Module senses erratic voltages from the left panel air discharge temperature sensor.
    FCIM B10B6:11 Left Floor Air Discharge Temperature: Circuit Short To Ground Module senses erratic voltages from the left floor air discharge temperature sensor.
    FCIM B10B6:15 Left Floor Air Discharge Temperature: Circuit Short To Battery Or Open Module senses erratic voltages from the left floor air discharge temperature sensor.

    Possible Sources 

    • Wiring, terminals or connectors
    • Air discharge temperature sensor
    • FCIM

  2. M1 CHECK THE AIR DISCHARGE TEMPERATURE SENSORS CIRCUITS FOR A SHORT TO VOLTAGE

    NOTE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

    • Ignition OFF.

    • Disconnect FCIM C2402A.

    • Disconnect FCIM C2402B.

    • Disconnect Driver side footwell air discharge temperature sensor C2436.

    • Disconnect Driver side register air discharge temperature sensor C2438.

    • Disconnect Passenger side footwell air discharge temperature sensor C2437.

    • Disconnect Passenger side register air discharge temperature sensor C2439.

    • Ignition ON.

    • Measure:

      Driver side register air discharge temperature sensor 

      Positive Lead Measurement / Action Negative Lead
      C2438-1
      GFD484166Courtesy of FORD MOTOR COMPANY
      		 Ground
      C2438-3
      GFD484166Courtesy of FORD MOTOR COMPANY
      		 Ground

      Driver side footwell air discharge temperature sensor 

      Positive Lead Measurement / Action Negative Lead
      C2436-1
      GFD484166Courtesy of FORD MOTOR COMPANY
      		 Ground
      C2436-3
      GFD484166Courtesy of FORD MOTOR COMPANY
      		 Ground

      Passenger side register air discharge temperature sensor 

      Positive Lead Measurement / Action Negative Lead
      C2439-1
      GFD484166Courtesy of FORD MOTOR COMPANY
      		 Ground
      C2439-3
      GFD484166Courtesy of FORD MOTOR COMPANY
      		 Ground

      Passenger side footwell air discharge temperature sensor 

      Positive Lead Measurement / Action Negative Lead
      C2437-1
      GFD484166Courtesy of FORD MOTOR COMPANY
      		 Ground
      C2437-3
      GFD484166Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is any voltage present? 

    Yes  REPAIR the circuit.
    No  GO to  M2

  3. M2 CHECK THE AIR DISCHARGE TEMPERATURE SENSORS CIRCUITS FOR A SHORT TO GROUND

    • Ignition OFF.

    • Measure:

      Driver side register air discharge temperature sensor 

      Positive Lead Measurement / Action Negative Lead
      C2438-1
      GFD484167Courtesy of FORD MOTOR COMPANY
      		 Ground
      C2438-3
      GFD484167Courtesy of FORD MOTOR COMPANY
      		 Ground

      Driver side footwell air discharge temperature sensor 

      Positive Lead Measurement / Action Negative Lead
      C2436-1
      GFD484167Courtesy of FORD MOTOR COMPANY
      		 Ground
      C2436-3
      GFD484167Courtesy of FORD MOTOR COMPANY
      		 Ground

      Passenger side register air discharge temperature sensor 

      Positive Lead Measurement / Action Negative Lead
      C2439-1
      GFD484167Courtesy of FORD MOTOR COMPANY
      		 Ground
      C2439-3
      GFD484167Courtesy of FORD MOTOR COMPANY
      		 Ground

      Passenger side footwell air discharge temperature sensor 

      Positive Lead Measurement / Action Negative Lead
      C2437-1
      GFD484167Courtesy of FORD MOTOR COMPANY
      		 Ground
      C2437-3
      GFD484167Courtesy of FORD MOTOR COMPANY
      		 Ground

    Are the resistances greater than 10, 000 ohms? 

    Yes  GO to  M3
    No  REPAIR the circuit.

  4. M3 CHECK THE AIR DISCHARGE TEMPERATURE SENSORS CIRCUITS FOR AN OPEN

    • Measure:

      Driver side register air discharge temperature sensor 

      Positive Lead Measurement / Action Negative Lead
      C2438-1
      GFD484167Courtesy of FORD MOTOR COMPANY
      		 C2402B-4
      Positive Lead Measurement / Action Negative Lead
      C2438-3
      GFD484167Courtesy of FORD MOTOR COMPANY
      		 C2402A-2

      Driver side footwell air discharge temperature sensor 

      Positive Lead Measurement / Action Negative Lead
      C2436-1
      GFD484167Courtesy of FORD MOTOR COMPANY
      		 C2402B-5
      Positive Lead Measurement / Action Negative Lead
      C2436-3
      GFD484167Courtesy of FORD MOTOR COMPANY
      		 C2402A-2

      Passenger side register air discharge temperature sensor 

      Positive Lead Measurement / Action Negative Lead
      C2439-1
      GFD484167Courtesy of FORD MOTOR COMPANY
      		 C2402B-10
      Positive Lead Measurement / Action Negative Lead
      C2439-3
      GFD484167Courtesy of FORD MOTOR COMPANY
      		 C2402A-2

      Passenger side footwell air discharge temperature sensor 

      Positive Lead Measurement / Action Negative Lead
      C2437-1
      GFD484167Courtesy of FORD MOTOR COMPANY
      		 C2402B-11
      Positive Lead Measurement / Action Negative Lead
      C2437-3
      GFD484167Courtesy of FORD MOTOR COMPANY
      		 C2402A-2

    Are the resistances less than 3 ohms? 

    Yes  GO to  M4
    No  REPAIR the circuit.

  5. M4 CHECK AIR DISCHARGE TEMPERATURE SENSORS CIRCUITS FOR A SHORT TO TOGETHER

    • Measure:

      Driver side register air discharge temperature sensor 

      Positive Lead Measurement / Action Negative Lead
      C2438-1
      GFD484167Courtesy of FORD MOTOR COMPANY
      		 C2438-3

      Driver side footwell air discharge temperature sensor 

      Positive Lead Measurement / Action Negative Lead
      C2436-1
      GFD484167Courtesy of FORD MOTOR COMPANY
      		 C2436-3

      Passenger side register air discharge temperature sensor 

      Positive Lead Measurement / Action Negative Lead
      C2439-1
      GFD484167Courtesy of FORD MOTOR COMPANY
      		 C2439-3

      Passenger side footwell air discharge temperature sensor 

      Positive Lead Measurement / Action Negative Lead
      C2437-1
      GFD484167Courtesy of FORD MOTOR COMPANY
      		 C2437-3

    Are the resistances greater than 10, 000 ohms? 

    Yes  INSTALL a new air discharge temperature sensor. Refer to Removal And Installation . CLEAR the Diagnostic Trouble Codes (DTCs). REPEAT the self-test. If the DTC returns, GO to  M5
    No  REPAIR the circuit.

  6. M5 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

    • Connect 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 service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, Refer to FCIM Guided Routine .
    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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