LEMON Manuals: Even more car manuals for everyone
Home >> Ford >> 2011 >> Explorer Limited, FWD >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission - 6F50 And 6F55 >> Diagnostic Routine(S) >> Diagnostic Routine D >> Pinpoint Test

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) P0705, P0706, P0708, P0709, P1702 and/or P1705 set? 
      1. Yes:  For Diagnostic Trouble Codes (DTCs) P0705, P0706, P0708, P0709 and/or P1702, GO to 2  on page 2.

        For Diagnostic Trouble Code (DTC) P1705, GO to 8  on page 7.

      2. No:  REFER to SYMPTOM CHART: AUTOMATIC TRANSMISSION - 6F50 AND 6F55 .
  2. Check the Transmission Range (TR) sensor circuits for power
    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 the voltage of the Transmission Range (TR) sensor circuits from the transaxle vehicle harness C168 to ground.
      Fig 1: Measuring Transaxle Vehicle Harness C168 Connector Terminals
      G07429815Courtesy of FORD MOTOR CO.
      • Is the voltage greater than 9 volts on all circuits? 
      1. Yes:  GO to 3  on page 3.
      2. No:  GO to 4  on page 3.
  3. Check the Transmission Range (TR) sensor ground circuit
    1. Measure the voltage between circuit RET24 (BN/BU) from the transaxle vehicle harness C168-8 to transaxle vehicle harness C168-4 circuit VET29 (VT/WH).
      Fig 2: Measuring Between Transaxle Vehicle Harness Connector Terminals
      G07429816Courtesy of FORD MOTOR CO.
      • Is the voltage less than 9 volts? 
      1. Yes:  REPAIR circuit RET24 (BN/BU) for an open. CLEAR the Diagnostic Trouble Codes (DTCs). TEST the system for normal operation.
      2. No:  GO to 6  on page 5.
  4. Check the Transmission Range (TR) sensor circuits for an open.
    1. Ignition OFF.
    2. Disconnect the Powertrain Control Module (PCM) C175T.
    3. Inspect the connector for damaged or pushed out terminals, corrosion, loose wires and missing or damaged seals.
    4. Measure the resistance of the Transmission Range (TR) sensor circuits from the transaxle vehicle harness C168 to Powertrain Control Module (PCM) C175T.
      Fig 3: Measuring Resistance Transaxle Vehicle Harness And Powertrain Control Module Connector Terminals
      G07429817Courtesy of FORD MOTOR CO.
      • Is the resistance greater than 5 ohms? 
      1. Yes:  REPAIR the circuit that measured greater than 5 ohms for an open. CLEAR the Diagnostic Trouble Codes (DTCs). TEST the system for normal operation.
      2. No:  GO to 5  on page 4.
  5. Check the Transmission Range (TR) sensor circuit for a short to ground
    1. Measure the resistance of the Transmission Range (TR) sensor circuits from the transaxle vehicle harness C168 to ground.
      Fig 4: Measuring Resistance Between Transaxle Vehicle Harness And Ground
      G07429818Courtesy of FORD MOTOR CO.
      • Is the resistance less than 5 ohms? 
      1. Yes:  REPAIR the circuit that measured less than 5 ohms. CLEAR the DTCs. 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.
  6. Check the Transmission Range (TR) sensor circuits shorted together.
    1. Measure the resistance of the Transmission Range (TR) sensor circuits from the transaxle vehicle harness C168 to C168 using the following table.
      Fig 5: Measuring Resistance Of Transaxle Vehicle Harness C168 Connector Terminals
      G07429819Courtesy of FORD MOTOR CO.
      • Are all the resistances greater than 10,000 ohms? 
      1. Yes:  GO to 7  on page 7.
      2. No:  REPAIR circuits having less than 10,000 ohms between other Transmission Range (TR) sensor input signal circuits that are shorted together. CLEAR the DTCs. TEST the system for normal operation.
  7. Check the Transmission Range (TR) sensor solenoid body assembly
    1. Remove the main control cover. REFER to MAIN CONTROL COVER .
    2. Measure the resistance of the solenoid body assembly.
      Fig 6: Measuring Resistance Of Solenoid Body Assembly Connector Terminals
      G07429820Courtesy of FORD MOTOR CO.
      • Is the resistance less than 0.5 ohms? 
      1. Yes:  REPLACE the Transmission Range (TR) sensor. CLEAR the DTCs. 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.
  8. On demand self-test
    1. Check to make sure the transaxle harness connector is fully seated, terminals are engaged in connector and in good condition before proceeding.
    2. Connect the scan tool.
    3. Make sure the selector lever is in the PARK or NEUTRAL position.
    4. Carry out the Key ON Engine OFF (KOEO) self-test.
      • Did Diagnostic Trouble Code (DTC) P1705 return? 
      1. Yes:  VERIFY selector lever cable adjustment. Vehicles equipped with SelectShift™ REFER to SELECTOR LEVER CABLE ADJUSTMENT . Vehicles equipped with a Transmission Control Switch (TCS), REFER to SELECTOR LEVER CABLE ADJUSTMENT .
      2. No:  TEST the system for normal operation.
scientia non olet · About LEMON Manuals