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Pinpoint Test D: Digital Transmission Range (TR) Sensor

WARNING: This page is about a different car, the 2004 Mercury Monterey and 2004 Ford Freestar. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Refer to DIGITAL TRANSMISSION RANGE (TR) SENSOR CONNECTOR  for the connector illustration.
NOTE: Refer to the DIGITAL TRANSMISSION RANGE (TR) SENSOR DIAGNOSIS CHART  preceding these pinpoint tests.
  1. D1 VERIFY DIAGNOSTIC TROUBLE CODES 
    • Key in OFF position.
    • Select PARK.
    • Carry out the on board diagnostics test. DTC codes P0705 and P0708 cannot be set by an incorrectly adjusted digital TR sensor.
    • Are only DTC codes P0705, P0708 present? 

      Yes 

      GO to  D4.

      No 

      GO to D2.

  2. D2 VERIFY DIGITAL TRANSMISSION RANGE SENSOR 
    • 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 digital TR Sensor Alignment Tool fits in the appropriate slots. The tool is designed to fit snugly.
    • Is the digital TR sensor correctly adjusted? 

      Yes 

      GO to D3.

      No 

      ADJUST the digital TR sensor. Refer to TRANSMISSION RANGE (TR) SENSOR ADJUSTMENT . PLACE transmission range selector lever into PARK and CLEAR DTCs. RERUN OBD Tests.GO to D3.

  3. D3 VERIFY SHIFT CABLE/LINKAGE ADJUSTMENT 
    • Place the transaxle manual lever in the overdrive position. Select OVERDRIVE.
    • Reconnect the shift cable/linkage.
    • Verify that the shift cable/linkage is correctly adjusted. Refer to SELECTOR LEVER CABLE ADJUSTMENT .
    • Is the shift cable/linkage correctly adjusted? 

      Yes 

      GO to D4.

      No 

      ADJUST the shift cable/linkage. Refer to SELECTOR LEVER CABLE ADJUSTMENT . GO to D4.

  4. D4 CHECK ELECTRICAL SIGNAL OPERATION 
    CAUTION: Do not pry on connector. This will damage the connector and result in a transmission concern.
    • Select PARK.
    • Disconnect: Digital TR Sensor.
    • Inspect both ends of the connector for damaged or pushed-out pins, corrosion, loose wires and missing or damaged seals.
    • Is there damage to the connector, pins or harness? 

      Yes 

      REPAIR as required. CLEAR DTCs and RERUN OBD Tests.

      No 

      If diagnosing a DTC, GO to D5. If diagnosing a starting concern, backup lamp concern, or a Neutral Sense concern GO to  D10.

  5. D5 CHECK ELECTRICAL SYSTEM OPERATION (DIGITAL TR AND PCM) 
    • Key in OFF position.
    • Connect the diagnostic tool.
    • Connect: Digital TR Sensor.
    • Key in ON position.
    • Enter the following diagnostic mode on the diagnostic tool: TR PIDS TR, TR_D, TR_V.
    • Move the transmission range selector lever into each gear and stop.
    • Observe any of the following PIDs, (vehicle-dependent) TR and TR_D, TR_V while wiggling harness, tapping on sensor, or driving the vehicle. Use PIDs TR, and TR D for DTCs P0705, P1704, and P1705. Use PIDs TR, and TR_V for DTC P0708.
    • Compare the PIDs to the DIGITAL TRANSMISSION RANGE (TR) SENSOR DIAGNOSIS CHART .
    • Do the PIDs TR, TR_D and TR_V 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  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 D6.

  6. D6 CHECK DIGITAL TRANSMISSION RANGE SENSOR OPERATION 
    • Disconnect: Digital TR Sensor Connector.
    • Connect: TR-E Cable to Transmission Tester.
    • Connect cable "E" with BLACK marked "DIGITAL" to sensor.
    • Place the digital TR overlay onto the transmission tester.
    • Carry out the Sensor Test as instructed on the digital TR overlay.
    • Does the status lamp on the tester TR-E cable match the selected gear positions? 

      Yes 

      Concern is not in the digital TR sensor. GO to D7.

      No 

      INSTALL a new digital TR sensor and ADJUST. Refer to TRANSMISSION RANGE (TR) SENSOR ADJUSTMENT . CLEAR DTCs and RERUN OBD Tests.

  7. D7 CHECK PCM HARNESS CIRCUITS FOR OPENS 
    CAUTION: Do not pry the connector. This will damage the connector and result in a transaxle concern. Press the button and pull out the harness connector.
    NOTE: Refer to the schematic diagrams and illustrations preceding the pinpoint tests.
    • Key in OFF position.
    • Disconnect: Powertrain Control Module Connector.
    • Inspect for damaged or pushed out pins, corrosion or loose wires.
    • Disconnect: Digital TR Sensor Connector.
    • Install the EEC-V Control System Breakout Box.
    • Measure the resistance between PCM test pin 91 at the EEC-V Control System Breakout Box and signal return circuit pin at TR harness connector pin 2.
    Fig 1: Checking PCM Harness Circuits For Opens (1 Of 5)
    G03244444Courtesy of FORD MOTOR CO.
    • Measure the resistance between PCM test pin 64 at the EEC-V Control System Breakout Box and TR3A circuit pin at TR harness connector pin 3.
      Fig 2: Checking PCM Harness Circuits For Opens (2 Of 5)
      G03244445Courtesy of FORD MOTOR CO.
    • Measure the resistance between PCM test pin 3 at the EEC-V Control System Breakout Box and TR1 circuit pin at TR harness connector pin 4.
      Fig 3: Checking PCM Harness Circuits For Opens (3 Of 5)
      G03244446Courtesy of FORD MOTOR CO.
    • Measure the resistance between PCM test pin 49 at the EEC-V Control System Breakout Box and TR2 circuit pin at TR harness connector pin 5.
      Fig 4: Checking PCM Harness Circuits For Opens (4 Of 5)
      G03244447Courtesy of FORD MOTOR CO.
    • Measure the resistance between PCM test pin 50 at the EEC-V Control System Breakout Box and TR4 circuit pin at TR harness connector pin 6.
      Fig 5: Checking PCM Harness Circuits For Opens (5 Of 5)
      G03244448Courtesy of FORD MOTOR CO.
    • Are all resistances less than 5 ohms? 

      Yes 

      GO to D8.

      No 

      REPAIR open circuit(s). RECONNECT all components. CLEAR DTCs. RERUN OBD Tests.

  8. D8 CHECK PCM HARNESS CIRCUITS FOR SHORT TO GROUND OR POWER 
    • Measure the resistance between PCM test pin 91 and test pin 71 at the EEC-V Control System Breakout Box.
      Fig 6: Checking PCM Harness Circuits For Short To Ground Or Power (1 Of 5)
      G03244449Courtesy of FORD MOTOR CO.
    • Measure the resistance between PCM test pin 3 and test pins 24, 25, 51, 71, 76, 77, 91 and 103 at the EEC-V Control System Breakout Box and ground.
      Fig 7: Checking PCM Harness Circuits For Short To Ground Or Power (2 Of 5)
      G03244450Courtesy of FORD MOTOR CO.
    • Measure the resistance between PCM test pin 49 and test pins 24, 25, 51, 71, 76, 77, 91 and 103 at the EEC-V Control System Breakout Box and ground.
      Fig 8: Checking PCM Harness Circuits For Short To Ground Or Power (3 Of 5)
      G03244451Courtesy of FORD MOTOR CO.
    • Measure the resistance between PCM test pin 50 and test pins 24, 25, 51, 71, 76, 77, 91 and 103 at the EEC-V Control System Breakout Box and ground.
      Fig 9: Checking PCM Harness Circuits For Short To Ground Or Power (4 Of 5)
      G03244452Courtesy of FORD MOTOR CO.
    • Measure the resistance between PCM test pin 64 and test pins 24, 25, 51,71, 76, 77, 91 and 103 at the EEC-V Control System Breakout Box and ground.
      Fig 10: Checking PCM Harness Circuits For Short To Ground Or Power (5 Of 5)
      G03244453Courtesy of FORD MOTOR CO.
    • Are all resistances greater than 10,000 ohms? 

      Yes 

      GO to D9.

      No 

      REPAIR short circuit(s). RECONNECT all components. CLEAR DTCs. RERUN OBD Tests.

  9. D9 CHECK FOR SHORT BETWEEN TR/PCM INPUT SIGNAL CIRCUITS 
    • Measure the resistance between test pin 3 and pins 49, 50 and 64 at the EEC-V Control System Breakout Box.
      Fig 11: Checking For Short Between TR/PCM Input Signal Circuits (1 Of 4)
      G03244454Courtesy of FORD MOTOR CO.
    • Measure the resistance between test pin 49 and pins 3, 50 and 64 at the EEC-V Control System Breakout Box.
    Fig 12: Checking For Short Between TR/PCM Input Signal Circuits (2 Of 4)
    G03244455Courtesy of FORD MOTOR CO.
    • Measure the resistance between test pin 50 and pins 3, 49 and 64 at the EEC-V Control System Breakout Box.
      Fig 13: Checking For Short Between TR/PCM Input Signal Circuits (3 Of 4)
      G03244456Courtesy of FORD MOTOR CO.
    • Measure the resistance between test pin 64 and pins 3, 49 and 50 at the EEC-V Control System Breakout Box.
      Fig 14: Checking For Short Between TR/PCM Input Signal Circuits (4 Of 4)
      G03244457Courtesy of FORD MOTOR CO.
    • Are all resistances more than 10,000 ohms? 

      Yes 

      INSTALL a new powertrain control module (PCM). CONNECT all components. CLEAR DTCs and RERUN OBD Tests.

      No 

      REPAIR shorts on circuits having less than 10,000 ohms between other TR/PCM input signal circuits. RECONNECT all components. CLEAR DTCs and RERUN OBD Tests.

  10. D10 CHECK THE NON PCM INTERNAL CIRCUITS OF SENSOR 
    • Connect: TR-E Cable to Transmission Tester.
    • Connect cable "E" with BLACK marked "DIGITAL" to sensor. Set switch on "E" cable to digital.
    • 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? 

      Yes 

      Concern is not in the digital TR sensor. For starter system concerns, refer to STARTING SYSTEM . For backup lamp concerns, refer to REVERSING LAMPS .

      No 

      INSTALL a new digital TR sensor and ADJUST. CLEAR DTCs and RERUN OBD Tests.

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