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Pinpoint Test C: Digital Transmission Range (Tr) Sensor

WARNING: This page is about a different car, the 2005 Lincoln LS. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Refer to Figure and DIGITAL TRANSMISSION RANGE (TR) SENSOR DIAGNOSIS CHART  preceding these pinpoint tests.
  1. C1 VERIFY DIAGNOSTIC TROUBLE CODES 
    • Key in OFF position.
    • Select PARK.
    • Carry out on-board diagnostic test.
    • Are only DTC codes P0705, P0708 present? 
    • Yes  : GO to  C4.
    • No  : GO to  C2.
  2. C2 VERIFY DIGITAL TRANSMISSION RANGE SENSOR ALIGNMENT 
    • Key in OFF position.
    • Select PARK.
    • Check to make sure the digital TR sensor harness connector is fully seated, terminals are fully engaged in connector and in good condition before proceeding.
    • Apply the parking brake.
    • Select NEUTRAL.
    • Disconnect the shift cable/linkage from the manual lever.
    • Verify that the TR Sensor Alignment Gauge fits in the appropriate slots.
    • Is the digital TR sensor correctly adjusted? 
    • Yes  : GO to  C3.
    • No  : ADJUST the digital TR sensor; REFER to DIGITAL TRANSMISSION RANGE (TR) SENSOR  in this article. PLACE transmission range selector lever into PARK and CLEAR DTCs. RERUN OBD Tests. GO to  C3.
  3. C3 VERIFY SHIFT CABLE/LINKAGE ADJUSTMENT 
  4. C4 CHECK ELECTRICAL SIGNAL OPERATION 
    • Select PARK.
    • Disconnect: Digital TR Sensor.
      CAUTION: Do not pry on connector. This will damage the connector and result in a transmission concern.
    • Inspect both ends of the connector for damage or pushed out pins, corrosion, loose wires and missing or damaged seals.
    • Is there damage to the connector, pins or harness? 
    • Yes  : REPAIR as necessary. CLEAR DTCs and RERUN OBD Tests.
    • No  : If diagnosing a DTC, GO to  C5.

      If diagnosing a starting concern or a backup lamp concern, GO to  C10.

  5. C5 CHECK ELECTRICAL SYSTEM OPERATION (DIGITAL TR AND PCM) 
    • Key in OFF position.
    • Connect the scan tool.
    • Connect: Digital TR Sensor.
    • Key in ON position.
    • Enter the following diagnostic mode on the scan tool: TR PIDS TR_D, TR_V.
    • Move transmission range selector lever into each gear and stop.
    • Observe the PIDs, TR_D, and TR_V (vehicle-dependent) while wiggling harness, tapping on sensor or driving the vehicle. Use PIDs TR_D for DTCs P0705, P1704 and P1705. Use PIDs TR_V for DTC P0708.
    • Compare the PIDs to the Digital Transmission Range (TR) Sensor Diagnosis Chart.
    • Do the PIDs TR_D and TRV match the Digital Transmission Range (TR) Sensor Diagnosis chart, and does the TR_D PID remain steady when the harness is wiggled, the sensor is tapped on, or the vehicle driven? 
    • Yes  : The problem is not in the digital TR sensor system. REFER to DIAGNOSIS BY SYMPTOM  in this article for further diagnosis.
    • No  : If TR_D changes when wiggling harness, tapping on the sensor or driving the vehicle, the problem may be intermittent. GO to  C6.
  6. C6 CHECK DIGITAL TRANSMISSION RANGE SENSOR OPERATION 
    • Disconnect: Digital TR Sensor.
    • Connect: TR-E Cable to Transmission Tester.
    • Connect: TR-E Cable to Digital TR Sensor.
    • Place the DIGITAL TR Overlay onto Transmission Tester.
    • Carry out SENSOR Test as instructed on the digital TR Overlay.
    • Does the status lamp on the tester TRS-E cable match the selected gear positions? 
    • Yes  : Concern is not in the digital TR sensor. GO to  C7.
    • No  : INSTALL a new digital TR sensor and ADJUST. REFER to DIGITAL TRANSMISSION RANGE (TR) SENSOR  in this article. CLEAR DTCs and RERUN OBD Tests.
  7. C7 CHECK PCM HARNESS CIRCUITS FOR OPENS 
    • Key in OFF position.
    • Disconnect: 150 Pin PTEC Module Connector "B".
    • Inspect for damaged or pushed out pins, corrosion or loose wires.
    • Disconnect: Digital TR Sensor.
      CAUTION: Do not pry the connector. This will damage the connector and result in a transmission concern.
    • Measure resistance between TR pin 2 harness side and signal return PCM pin 14 harness side.
      Fig 1: Measuring Resistance Between TR Pin 2 Harness Side And Signal Return PCM Pin 14 Harness Side
      G03997166Courtesy of FORD MOTOR CO.
    • Measure resistance between PCM pin 22 and TR pin 4 harness side.
      Fig 2: Measuring Resistance Between PCM Pin 22 And TR Pin 4
      G04008083Courtesy of FORD MOTOR CO.
    • Measure resistance between PCM pin 18 and TR pin 5 harness side.
      Fig 3: Measuring Resistance Between PCM Pin 18 And TR Pin 5
      G04008084Courtesy of FORD MOTOR CO.
    • Measure resistance between PCM pin 10 and TR pin 6 harness side.
      Fig 4: Measuring Resistance Between PCM Pin 10 And TR Pin 6
      G03997169Courtesy of FORD MOTOR CO.
    • Measure resistance between PCM pin 9 and TR pin 3 harness side.
      Fig 5: Measuring Resistance Between PCM Pin 9 And TR Pin 3
      G03997170Courtesy of FORD MOTOR CO.
    • Are the resistances less than 5 ohms? 
    • Yes  : GO to  C8.
    • No  : REPAIR the circuits. TEST the system for normal operation.
  8. C8 CHECK PCM HARNESS CIRCUITS FOR SHORT TO GROUND OR POWER 
    • Measure resistance between PCM pin 14 and TR pins 10 and 12 harness side and ground.
      Fig 6: Measuring Resistance Between PCM Pin 14 And TR Pins 10 And 12 Harness Side And Ground
      G03997171Courtesy of FORD MOTOR CO.
    • Measure resistance between pin 22 harness side and ground; and pin 14 harness side and ground.
      Fig 7: Measuring Resistance Between Pin 22 Harness Side And Ground
      G03997172Courtesy of FORD MOTOR CO.
    • Measure resistance between pin 18 harness side and ground; and pin 14 harness side and ground.
      Fig 8: Measuring Resistance Between Pin 18 Harness Side And Ground
      G03997173Courtesy of FORD MOTOR CO.
    • Measure resistance between pin 10 harness side and ground; and pin 14 harness side and ground.
      Fig 9: Measuring Resistance Between Pin 10 Harness Side And Ground
      G03997174Courtesy of FORD MOTOR CO.
    • Measure resistance between pin 9 harness side and ground; and pin 14 harness side and ground.
      Fig 10: Measuring Resistance Between Pin 9 Harness Side And Ground
      G03997175Courtesy of FORD MOTOR CO.
    • Are the resistances greater than 10.000 ohms? 
    • Yes  : GO to  C9.
    • No  : REPAIR the circuits. TEST the system for normal operation. CLEAR DTCs. RERUN OBD Tests.
  9. C9 CHECK FOR SHORT BETWEEN TR/PCM INPUT SIGNAL CIRCUITS 
    • Measure resistance between pin 9 harness side and pin 22, pin 18 and pin 10 harness side.
      Fig 11: Measuring Resistance Between Pin 9 Harness Side And Pin 22, Pin 18 And Pin 10 Harness Side
      G03997176Courtesy of FORD MOTOR CO.
    • Measure resistance between pin 22 harness side; and between pin 9, pin 18 and pin 10 harness side.
      Fig 12: Measuring Resistance Between pin 22 And Between Pin 9, Pin 18 And Pin 10 Harness Side
      G03997177Courtesy of FORD MOTOR CO.
    • Measure resistance between pin 18 harness side; and between pin 22, pin 9 and pin 10 harness side.
      Fig 13: Measuring Resistance Between Pin 18 Harness Side; And Between Pin 22, Pin 9 And Pin 10
      G03997178Courtesy of FORD MOTOR CO.
    • Measure resistance between pin 10 harness side; and between pin 22, pin 18 and pin 9 harness side.
      Fig 14: Measuring Resistance Between Pin 10 Harness Side; And Between Pin 22, Pin 18 And Pin 9 Harness Side
      G03997179Courtesy of FORD MOTOR CO.
    • Are the resistances greater than 10,000 ohms? 
    • Yes  : INSTALL a new PCM. TEST the system for normal operation.
    • No  : REPAIR the circuit. TEST the system for normal operation.
  10. C10 CHECK THE NON-PCM INTERNAL CIRCUITS OF SENSOR 
    • Connect: TRS-E Cable to Transmission.
    • Connect: TRS-E Cable to Digital TR Sensor.
    • Place the Digital TR Overlay onto Transmission Tester.
    • Carry out Switch Test as instructed on the digital TR Overlay.
    • Does the status lamp on the tester indicate RED for the correct gear position? 
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