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Home >> Ford >> 2012 >> Explorer Limited, 3.5 8, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 27 (Automatic Transmission - 6R140 (TORQSHIFT-R-6)) >> Diagnosis & Testing >> Pinpoint Tests >> Pinpoint Tests - Transmission Control Module (TCM) >> Pinpoint Test H: Transmission Range Sensor (TRS)

Pinpoint Test H: Transmission Range Sensor (TRS)

WARNING: This page is about a different car, the 2013 Ford F-550 Super Duty, 2013 Ford F-450 Super Duty, 2013 Ford F-350 Super Duty, and 2013 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: If the scan tool is unable to access the transmission PIDs, REFER to the INTRODUCTION - DIESEL MODELS or ENGINE CONTROLS - INTRODUCTION (EXCEPT DIESEL & HYBRID) (SECTION 0) .
NOTE: Read and record all DTCs.
  1. H1 VERIFY DTCs 
    • Ignition OFF.
    • Connect the scan tool.
    • Select PARK.
    • Ignition ON.
    • Carry out the Key ON Engine OFF (KOEO) then the Key ON Engine Running (KOER) test. DTCs P0706, P0707, P0708, P1702 and P1921 cannot be set by an incorrectly adjusted selector lever cable.
    • Are Transmission Range (TR) DTC codes present? 
    • Yes  : GO to  H3.
    • No  : GO to H2.
  2. H2 VERIFY SELECTOR LEVER CABLE/LINKAGE ADJUSTMENT 
  3. H3 CHECK TR SENSOR ELECTRICAL OPERATION 
    • Enter the following diagnostic mode on the scan tool: TR PIDs: TR_DC and TR_FREQ.
    • Move the selector lever into each range and stop.
    • Observe the following PIDs: TR_DC and TR_FREQ while wiggling the harness or driving the vehicle.
    • Compare the PID: TR_DC to the selector lever position duty cycle, using the following chart.
      Selector Lever Position Range (% Duty Cycle)
      P 13.3 - 15.5
      R 33.2 - 34.5
      N 40.0 - 46.6
      D 58 - 60.5
      Auto 69.0 - 70.5
      2 80.0 - 90.5
      1 85.5 - 95.0
    • Is the TR_FREQ between 100 to 240 Hz? 

      Is the TR_DC in range? 

      Do the TR_DC and TR_FREQ remain steady when the harness is wiggled or the vehicle driven? 

    • Yes  : The problem is not in the TR sensor system. REFER to DIAGNOSIS BY SYMPTOM  for further diagnosis.
    • No  : GO to H4.
  4. H4 CHECK THE TRANSMISSION VEHICLE HARNESS FOR POWER 
    • Disconnect: Transmission C1623.
    • Inspect the connector for damaged or pushed out terminals, corrosion, loose wires and missing or damaged seals.
    • Ignition ON.
    • Measure the voltage on the TR sensor circuits between the transmission vehicle harness C1623-12, circuit LE111 (VT/GN) and C1623-13, circuit CET22 (GY/BN) and ground.
      Fig 1: Measuring Voltage On TR Sensor Circuits Between Transmission Vehicle Harness C1623-12, Circuit LE111 (VT/GN), C1623-13, Circuit CET22 (GY/BN) And Ground
      G07482736Courtesy of FORD MOTOR CO.
    • Is voltage less than 10.5 volts on C1623-12, circuit LE111 (VT/GN) and 4.8 volts on C1623-13, circuit CET22 (GY/BN)? 
    • Yes  : GO to H5.
    • No  : GO to  H7.
  5. H5 CHECK THE TRANSMISSION VEHICLE HARNESS FOR AN OPEN 
    • Ignition OFF.
    • Disconnect: Transmission Control Module (TCM) C1750.
    • Inspect the connector for damaged or pushed out terminals, corrosion, loose wires and missing or damaged seals.
    • Measure the resistance of the TR sensor circuits between the transmission vehicle harness C1623 and the TCM C1750 using the following chart.
      Transmission TR Sensor Circuit TCM
      C1623-12 TR Power LE111 (VT/GN) C1750-20
      C1623-10 TR Ground RET24 (BN/BU) C1750-49
      C1623-13 TR Signal CET22 (GY/BN) C1750-45
    • Is the resistance less than 5 ohms? 
    • Yes  : GO to H6.
    • No  : REPAIR the circuit which measured greater than 5 ohms. CLEAR the DTCs. TEST the system for normal operation.
  6. H6 CHECK THE TRANSMISSION VEHICLE HARNESS FOR A SHORT TO GROUND 
    • Measure the resistance of the TR sensor circuits between the TCM C1750 and ground using the following chart.
      TCM TR Sensor Circuit Ground
      C1750-20 TR Power LE111 (VT/GN) Ground
      C1750-49 TR Ground RET24 (BN/BU) Ground
      C1750-45 TR Signal CET22 (GY/BN) Ground
    • Is the resistance greater than 10, 000 ohms? 
    • Yes  : REPLACE the TCM. PROGRAM the TCM with the latest calibration level. PERFORM the solenoid strategy download procedure. REFER to SOLENOID BODY STRATEGY . TEST the system for normal operation.
    • No  : REPAIR the circuit which measured less than 10, 000 ohms. CLEAR the DTCs. TEST the system for normal operation.
  7. H7 CHECK THE TR INTERNAL HARNESS FOR AN OPEN 
    • Remove the transmission fluid pan.
    • Disconnect: 3-way TR sensor connector.
    • Inspect the connector for damaged or pushed out terminals, corrosion, loose wires and missing or damaged seals.
    • Measure the resistance of the TR sensor circuits between C1623 and the 3-way TR sensor connector component side, using the following chart.
      Transmission TR Sensor Circuit Terminal
      C1623-12 TR Power 1
      C1623-13 TR Signal 2
      C1623-10 TR Ground 3
    • Is the resistance less than 5 ohms? 
    • Yes  : GO to H8.
    • No  : REPLACE the transmission internal harness. CLEAR the DTCs. TEST the system for normal operation.
  8. H8 CHECK THE TR INTERNAL HARNESS FOR A SHORT TO GROUND 
    • Measure the resistance of the TR sensor circuits between C1623 and ground using the following chart.
      Transmission TR Sensor Circuit Ground
      C1623-12 TR Power Ground
      C1623-13 TR Signal Ground
      C1623-10 TR Ground Ground
    • Is the resistance greater than 10, 000 ohms? 
    • Yes  : GO to H9.
    • No  : REPLACE the transmission internal harness. CLEAR the DTCs. TEST the system for normal operation.
  9. H9 CHECK TR SENSOR TO MANUAL CONTROL VALVE 
    • Check TR sensor connection to the manual control valve shaft.
    • Is the TR sensor connected to the manual control valve shaft? 
    • Yes  : INSTALL a new TR Sensor. REFER to Transmission Range (TR) Sensor  . TEST the system for normal operation.
    • No  : INSPECT the manual control valve shaft roll pin is properly installed. REFER to MANUAL CONTROL LEVER SHAFT AND SEAL . REPAIR the manual control valve shaft roll pin. CLEAR the DTCs. TEST the system for normal operation.
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