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Home >> Ford >> 2020 >> Fusion Titanium, FWD >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission - 6-Speed Automatic Transmission - 6F35 (1 Of 3) >> Diagnosis And Testing >> Automatic Transmission - 1.5L EcoBoost (118kW/160PS) - I4 >> Pinpoint Tests >> Pinpoint Test K : TSS (Turbine Shaft Speed) Sensor

Pinpoint Test K : TSS (Turbine Shaft Speed) Sensor

  1. Refer to Transmission Controls - 6F35 for schematic and connector information.

    Normal Operation and Fault Conditions 

    The TSS sensor is a hall-effect sensor that sends a signal to the PCM that indicates transmission turbine shaft input speed. The TSS sensor provides converter turbine speed information for TCC strategy.

    DTC Fault Trigger Conditions 

    DTC Description Fault Trigger Condition
    PCM P0715:00 Input/Turbine Shaft Speed Sensor "A" Circuit: No Sub Type Information No input from the TSS sensor.
    PCM P0717:00 Input/Turbine Shaft Speed Sensor "A" Circuit No Signal: No Sub Type Information No input from the TSS sensor.
    PCM P0718:00 Input/Turbine Shaft Speed Sensor "A" Circuit Intermittent: No Sub Type Information Unrealistic change in the TSS sensor signal, erratic or intermittently no input.

    Possible Sources 

    • Connectors damaged or pushed-out terminals, corrosion, loose wires and missing or damaged seals
    • TSS sensor
    • PCM

  2. K1 RETRIEVE AND RECORD ALL DTCS

    • Using the diagnostic scan tool, retrieve all diagnostic trouble codes (DTCs).

    Are diagnostic trouble codes (DTCs) P0715, P0717 and/or P0718 present? 

    Yes  GO to  K2
    No  REFER to: Diagnosis By Symptom .

  3. K2 CHECK THE TSS (TURBINE SHAFT SPEED) SENSOR VEHICLE POWER CIRCUIT FOR AN OPEN

    • Ignition OFF.

    • Disconnect Transmission Vehicle Harness C1520B.

    • Inspect the connectors for damaged or pushed-out terminals, corrosion, loose wires and missing or damaged seals.

    • Ignition ON.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C1520B-3
      GFD482604Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the voltage greater than 9.5 volts? 

    Yes  GO to  K3
    No  INSPECT and REPAIR the circuit. If an open circuit or a short to ground is not found, Refer to PCM Guided Routine Testing . After installing a new PCM, CARRY OUT the transmission strategy download. REFER to: Transmission Strategy Download .

  4. K3 CHECK THE TSS (TURBINE SHAFT SPEED) SENSOR GROUND CIRCUIT

    • Ignition ON.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C1520B-3
      GFD482604Courtesy of FORD MOTOR COMPANY
      		 C1520B-1

    Is voltage greater than 9.5 volts? 

    Yes  GO to  K4
    No  INSPECT and REPAIR the circuit. If an open circuit or short to power is not found, Refer to PCM Guided Routine Testing . After installing a new PCM, CARRY OUT the transmission strategy download. REFER to: Transmission Strategy Download .

  5. K4 CHECK THE TSS (TURBINE SHAFT SPEED) SENSOR SIGNAL CIRCUIT FOR AN OPEN

    • Ignition OFF.

    • Disconnect PCM C1915E.

    • Inspect the connector for damaged or pushed-out terminals, corrosion, loose wires and missing or damaged seals.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C1520B-2
      GFD482603Courtesy of FORD MOTOR COMPANY
      		 C1915E-27

    Is the resistance less than 3 ohms? 

    Yes  GO to  K5
    No  REPAIR the circuit.

  6. K5 CHECK THE TSS (TURBINE SHAFT SPEED) SENSOR SIGNAL CIRCUIT FOR A SHORT TO GROUND

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C1520B-2
      GFD482603Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the resistance greater than 10, 000 ohms? 

    Yes  GO to  K6
    No  REPAIR the circuit.

  7. K6 CHECK THE TSS (TURBINE SHAFT SPEED) SENSOR SIGNAL CIRCUIT FOR A SHORT TO POWER

    • Ignition ON.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C1520B-2
      GFD482604Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is any voltage present? 

    Yes  REPAIR the circuit.
    No  INSTALL a new TSS sensor. REFER to: Turbine Shaft Speed (TSS) Sensor .
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