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Pinpoint Test

NOTE: If the scan tool is unable to communicate with the Powertrain Control Module (PCM) or access the transmission Parameter Identifications (PIDs), REFER to INTRODUCTION - GASOLINE MODELS .
  1. Read and record all Diagnostic Trouble Codes (DTCs)
    1. Install the scan tool and record all Diagnostic Trouble Codes (DTCs).
      • Were Diagnostic Trouble Codes (DTCs) P0710, P0711, P0712, P0713, P1711 and/or P1783 set? 
      1. Yes:  For Diagnostic Trouble Codes (DTCs) P0712, P0713 and/or P0710, GO to 2  on page 2.

        For Diagnostic Trouble Code (DTC) P0711, P1711 and/or P1783, GO to 6  on page 5.

      2. No:  REFER to SYMPTOM CHART: AUTOMATIC TRANSMISSION - 6F50 AND 6F55 
  2. Check the Transmission Fluid Temperature (TFT) sensor circuit for an open and short to ground
    1. Ignition OFF.
    2. Disconnect the transaxle vehicle harness C168.
    3. Inspect the connector for damaged or pushed out terminals, corrosion, loose wires and missing or damaged seals.
    4. Ignition ON.
    5. Access the TFT and TFTV PIDs.
      • Does the TFT PID display a temperature of -40 C (-39.9 F) and the TFTV PID display 4.9 volts? 
      1. Yes:  GO to 3  on page 2.
      2. No:  INSPECT and REPAIR circuit VET 27 (BN/YE) for a short to ground. If a short to ground is not found, REPLACE the Powertrain Control Module (PCM). PROGRAM the Powertrain Control Module (PCM) with the latest calibration level. PERFORM the Solenoid Body Strategy Data Download procedure. REFER to Solenoid Body Strategy Download. TEST the system for normal operation.
  3. Check the Transmission Fluid Temperature (TFT) sensor circuit for voltage
    1. Measure for voltage between the transaxle vehicle harness C168-2 and ground.
      Fig 1: Measuring Voltage Between Transaxle Vehicle Harness C168-2 And Ground Connector Terminals
      G07429855Courtesy of FORD MOTOR CO.
      • Is the voltage greater than 4.8 volts? 
      1. Yes:  GO to 4  on page 3.
      2. No:  INSPECT and REPAIR circuit VET27 (BN/YE) for an open. If an open circuit is not found, REPLACE the Powertrain Control Module (PCM). PROGRAM the Powertrain Control Module (PCM) with the latest calibration level. PERFORM the Solenoid Body Strategy Data Download procedure. REFER to Solenoid Body Strategy Download. TEST the system for normal operation.
  4. Check the Transmission Fluid Temperature (TFT) sensor for a short to ground
    1. Measure the resistance between the transaxle internal harness terminal 2 and ground component side.
      Fig 2: Measuring Resistance Between Transaxle Internal Harness Terminal 2 And Ground Connector Terminals
      G07429856Courtesy of FORD MOTOR CO.
      • Is the resistance less than 5 ohms? 
      1. 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. TEST the system for normal operation.
      2. No:  GO to 5  on page 4.
  5. Check the Transmission Fluid Temperature (TFT) sensor for an open
    1. Measure the resistance between the transaxle internal harness terminal 2 and terminal 3 component side.
      Fig 3: Measuring Resistance Between Transaxle Internal Harness Connector Terminals
      G07429857Courtesy of FORD MOTOR CO.
      TEMPERATURE RESISTANCE REFERENCE CHART

      C°-F° Ohms
      -40 C (-39.9 F) - -20 C (-4 F) 967K-284K
      -19 C (-2.2 F) - -1 C (30.2 F) 284K-100K
      0 C (32 F) - 20 C (68 F) 100K-37K
      21 C (69.8 F) - 40 C (103.9 F) 37K-16K
      41 C (105.7 F) - 70 C (157.9 F) 16K-5K
      71 C (159.7 F) - 90 C (193.9 F) 5K-2.7K
      91 C (195.7 F) - 110 C (229.8 F) 2.7K-1.5K
      111 C (231.6 F) - 130 C (265.8 F) 1.5K-800
      131 C (267.6 F) - 150 C (301.8 F) 800-540
      • Do the temperature to resistance specifications match? 
      1. Yes:  REPLACE the Powertrain Control Module (PCM). PROGRAM the Powertrain Control Module (PCM) with the latest calibration level. PERFORM the Solenoid Body Strategy Data Download procedure. REFER to Solenoid Body Strategy Download. TEST the system for normal operation.
      2. 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. TEST the system for normal operation.
  6. Check the Transmission Fluid Temperature (TFT) sensor circuit voltage
    1. Ignition OFF.
    2. Disconnect the transaxle vehicle harness C168.
    3. Inspect the connector for damaged or pushed out terminals, corrosion, loose wires and missing or damaged seals.
    4. Ignition ON.
    5. Measure for voltage between the transaxle vehicle harness C168-2 and C168-3.
      Fig 4: Measuring Voltage Between Transaxle Vehicle Harness C168-2 And C168-3 Connector Terminals
      G07429858Courtesy of FORD MOTOR CO.
      • Is the voltage greater than 4.0 volts? 
      1. 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. TEST the system for normal operation.
      2. No:  REPLACE the Powertrain Control Module (PCM). PROGRAM the Powertrain Control Module (PCM) with the latest calibration level. PERFORM the Solenoid Body Strategy Data Download procedure. REFER to Solenoid Body Strategy Download. TEST the system for normal operation.
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