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Home >> Lincoln >> 2018 >> MKZ Select, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1198 (Automatic Transmission - 6F35) >> Diagnosis And Testing >> Automatic Transmission - 2.3L EcoBoost (201kW/273PS) >> Pinpoint Tests >> Pinpoint Test G : TFT (Transmission Fluid Temperature) Sensor >> Pinpoint Test G : TFT (Transmission Fluid Temperature) Sensor

Pinpoint Test G : TFT (Transmission Fluid Temperature) Sensor

WARNING: This page is about a different car, the 2018 Lincoln MKC. However, it is still accessible from the selected car via links, so may be relevant.

  1. G1 RETRIEVE AND RECORD ALL DTCS

    • Using the diagnostic scan tool, retrieve all CMDTCs.

    Are CMDTCs P0710, P0711, P0712, P0713, P1711 present? 

    Yes  For CMDTCs P0710, P0712 and/or P0713, GO to  G2For CMDTCs P0711, P1711, GO to  G6
    No  REFER to: Diagnosis By Symptom .

  2. G2 CHECK THE TFT (TRANSMISSION FLUID TEMPERATURE) SENSOR SIGNAL INPUT

    • Ignition OFF.

    • Disconnect Transmission Vehicle Harness C1520A .

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

    • Ignition ON.

    • Enter the following diagnostic mode: TFT and TFTV.

    Does the TFT PID display a temperature -39.9 °F (-40 °C) and the TFTV PID display 4.9 volts? 

    Yes  GO to  G5
    No  REPAIR the circuit.

  3. G3 CHECK THE TFT (TRANSMISSION FLUID TEMPERATURE) SENSOR SIGNAL CIRCUIT

    • Connect.
      Positive Lead Measurement / Action Negative Lead
      C1520A-1
      GFD227360Courtesy of FORD MOTOR COMPANY
      		 C1520A-2

    Does the TFT PID display a temperature 375.5 °F (191 °C) and the TFTV PID display 0.0 to 0.2 volts? 

    Yes  GO to  G5
    No  GO to  G4

  4. G4 CHECK THE TFT (TRANSMISSION FLUID TEMPERATURE) SENSOR SIGNAL VOLTAGE

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C1520A-2
      GFD227147Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the voltage between 4.8 and 5.1 volts? 

    Yes  GO to  G5
    No  INSPECT and REPAIR the circuit. If an open circuit is not found, INSTALL a new PCM. REFER to: Powertrain Control Module (PCM) 2.3L EcoBoost (201kW/273PS) . PERFORM the Transmission Strategy Download, REFER to: Transmission Strategy Download .

  5. G5 CHECK THE TFT (TRANSMISSION FLUID TEMPERATURE) SENSOR RESISTANCE

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      Component side resistance pin 1.
      GFD227146Courtesy of FORD MOTOR COMPANY
      		 Component side resistance pin 2.

      Temperature 

      °F (°C) Ohms 
      -39.9--4.0 °F (-40--20 °C) 1, 076K-269K
      -2.2-30.2 °F (-19--1 °C) 309K-91K
      32.0-68.0 °F (-20 °C) 104K-35K
      69.8-103.9 °F (21-40 °C) 40K-15K
      105.7-157.9 °F (41-70 °C) 17K-4.9K
      159.7-193.9 °F (71-90 °C) 5.6K-2.5K
      195.7-229.8 °F (91-110 °C) 3.0K-1.4K
      231.6-265.8 °F (111-130 °C) 1.7K-0.8K
      267.6-301.8 °F (131-150 °C) 0.97K-0.56K

    Do the temperature to resistance specifications match? 

    Yes  To diagnosis an overheating concern, REFER to: Transmission Cooling .
    No  INSTALL a new transmission internal wiring harness frame. REFER to: Transmission Internal Wiring Harness Frame .

  6. G6 ON DEMAND SELF-TEST

    • Check and make sure the transmission vehicle harness C1520A is fully seated, the terminals are engaged in the connector and in good condition before proceeding.

    • Using the diagnostic scan tool, make sure the transmission fluid temperature is between 33.8 °F (1 °C) and 219.1 °F (104 °C).

    • Perform the KOER self-test.

    Did DTC P0711, P1711 set? 

    Yes  For CMDTCs P0711 and P1711, INSTALL a new transmission internal wiring harness frame. REFER to: Transmission Internal Wiring Harness Frame .
    No  The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.
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