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Pinpoint Test K : Turbine Shaft Speed Sensor

  1. K1 RETRIEVE AND RECORD ALL DTCS

    • Using the diagnostic scan tool, retrieve all DTCs.

    Are DTCs P0715, P0717, P0718 and/or P0720 present? 

    Yes  For DTCs P0715, P0717 and P0718, GO to  K2. For DTC P0715 and P0720, GO to  K7.
    No  GO to Symptom Chart .

  2. K2 CHECK TSS SENSOR SIGNAL CIRCUIT FOR AN OPEN

    • Ignition OFF.
    • Disconnect: Transmission Vehicle Harness C168 .
    • Disconnect: PCM C175T .
    • Inspect the connectors for damaged or pushed-out terminals, corrosion, loose wires and missing or damaged seals.
    • Measure the resistance  between.
      Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C168-19 RET33 (WH/VT) C175T-16 RET33 (WH/VT)
    1. GFD36164Courtesy of FORD MOTOR COMPANY

    Is the resistance less than 3 ohms? 

    Yes  GO to  K3.
    No  REPAIR the circuit.

  3. K3 CHECK TSS SENSOR SIGNAL CIRCUIT FOR A SHORT TO GROUND

    • Measure the resistance  between.
      Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C168-19 RET33 (WH/VT) - Ground
    1. GFD35622Courtesy of FORD MOTOR COMPANY

    Is the resistance greater than 10, 000 ohms? 

    Yes  GO to  K4.
    No  REPAIR the circuit.

  4. K4 CHECK TSS SENSOR SIGNAL CIRCUIT FOR A SHORT TO POWER

    • Ignition ON.
    • Measure the voltage  between.
      Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C168-19 RET33 (WH/VT) - Ground
    1. GFD35622Courtesy of FORD MOTOR COMPANY

    Is any voltage present? 

    Yes  REPAIR the circuit.
    No  GO to  K5.

  5. K5 CHECK THE TSS SENSOR GROUND CIRCUIT

    • Ignition OFF.
    • Ignition ON.
    • Measure the voltage  between.
      Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C168-19 RET33 (WH/VT) C168-9 RET24 (BN/BU)
    1. GFD35622Courtesy of FORD MOTOR COMPANY

    Is voltage less than 4.8 volts? 

    Yes  REPAIR the circuit.
    No  GO to  K6.

  6. K6 CHECK THE SOLENOID BODY SIGNAL CIRCUIT FOR AN OPEN

    • Ignition OFF.
    • Disconnect: TSS Sensor.
    • Measure the component side resistance  between.
      Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      19 - 3 -
    1. GFD36166Courtesy of FORD MOTOR COMPANY

    Is the resistance greater than 0.5 ohms? 

    Yes  INSTALL a new solenoid body assembly. REFER to Solenoid Body Assembly . PERFORM the Solenoid Body Strategy Data Download procedure. REFER to Solenoid Body Strategy Download .
    No  INSTALL a new TSS sensor. REFER to Turbine Shaft Speed (TSS) Sensor .

  7. K7 CHECK TSS SENSOR VPWR CIRCUIT FOR AN OPEN

    • Ignition OFF.
    • Disconnect: Transmission Vehicle Harness C168 .
    • Inspect the connectors for damaged or pushed-out terminals, corrosion, loose wires and missing or damaged seals.
    • Ignition ON.
    • Measure the voltage  between.
      Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C168-20 LE111 (VT/GN) - Ground
    1. GFD35622Courtesy of FORD MOTOR COMPANY

    Is the voltage less than 10 volts? 

    Yes  REPAIR the circuit. If an open circuit is not found, INSTALL a new PCM. REFER to Electronic Engine Controls . PERFORM the Solenoid Body Strategy Data Download procedure. REFER to Solenoid Body Strategy Download .
    No  INSTALL a new solenoid body assembly. REFER to Solenoid Body Assembly . PERFORM the Solenoid Body Strategy Data Download procedure. REFER to Solenoid Body Strategy Download .
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