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Pinpoint Test C: Digital Transmission Range (Tr) Sensor

WARNING: This page is about a different car, the 2004 Ford Ranger. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Refer to the DIGITAL TRANSMISSION RANGE (TR) SENSOR CONNECTOR  illustration preceding these pinpoint tests.
NOTE: Refer to the 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 the On-Board Diagnostic Test. DTC codes P0705 and P0708 cannot be set by an incorrectly adjusted digital TR sensor.
    • Are only DTC codes P0705, P0708 present? 
    1. Yes  : GO to  C4.
    2. 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 Digital TR Sensor Alignment Tool fits in the appropriate slots.
    • Is the Digital TR Sensor correctly adjusted? 
    1. Yes  : GO to C3.
    2. No  : ADJUST the Digital TR Sensor. REFER to DIGITAL TRANSMISSION RANGE (TR) SENSOR . PLACE the transmission range selector lever into PARK and CLEAR the DTCs. RERUN OBD Tests. GO to C3.
  3. C3 VERIFY SHIFT CABLE/LINKAGE ADJUSTMENT 
    • Place the manual lever in the OVERDRIVE position.
    • Select DRIVE.
    • Reconnect the shift cable/linkage.
    • Verify that the shift cable/linkage is correctly adjusted. Refer to TRANSAXLE/TRANSMISSION EXTERNAL CONTROLS .
    • Is the shift cable/linkage correctly adjusted? 
    1. Yes  : GO to C4.
    2. No  : ADJUST the shift cable/linkage. REFER to TRANSAXLE/TRANSMISSION EXTERNAL CONTROLS . GO to C4.
  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? 
    1. Yes  : REPAIR as required. CLEAR DTCs and RERUN OBD Tests.
    2. No  : If diagnosing a DTC, GO to C5.

      If diagnosing a starting concern, 4x4 low engagement 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 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 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 and/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 or the vehicle is driven? 
    1. Yes  : The problem is not in the digital TR sensor system. Refer to DIAGNOSIS BY SYMPTOM  for further diagnosis.
    2. 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 TR-E cable match the selected gear positions? 
    1. Yes  : Concern is not in the digital TR sensor. GO to C7.
    2. No  : INSTALL a new digital TR sensor and ADJUST. REFER to DIGITAL TRANSMISSION RANGE (TR) SENSOR . CLEAR DTCs and RERUN OBD Tests.
  7. C7 CHECK PCM HARNESS CIRCUITS FOR OPENS 
    • Key in OFF position.
    • Disconnect: Powertrain Control Module (PCM).
    • Disconnect: Digital TR Sensor.
      • CAUTION: Do not pry the connector. This will damage the connector and result in a transmission concern.
    • 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 vehicle harness connector pin 2.
      Fig 1: Measuring Resistance Between PCM Test Pin 91 & Vehicle Harness Connector Pin 2
      G03275389Courtesy 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 vehicle harness connector pin 4.
      Fig 2: Measuring Resistance Between PCM Test Pin 3 & Vehicle Harness Connector Pin 4
      G03275390Courtesy 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 vehicle harness connector pin 5.
      Fig 3: Measuring Resistance Between PCM Test Pin 49 & Vehicle Harness Connector Pin 5
      G03275391Courtesy 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 vehicle harness connector pin 6.
      Fig 4: Measuring Resistance Between PCM Test Pin 50 & Vehicle Harness Connector Pin 6
      G03275392Courtesy 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 vehicle harness connector pin 3.
      Fig 5: Measuring Resistance Between PCM Test Pin 64 & Vehicle Harness Connector Pin 3
      G03275393Courtesy of FORD MOTOR CO.
    • Are all resistances less than 5 ohms? 
    1. Yes  : GO to C8.
    2. No  : REPAIR open circuit(s). RECONNECT all components. CLEAR DTCs. RERUN OBD Tests.
  8. C8 CHECK PCM HARNESS CIRCUITS FOR SHORT TO GROUND OR POWER 
    • Measure the resistance between PCM test pin 91 and test pins 71 and 97 at the EEC-V Control System Breakout Box.
      Fig 6: Measuring Resistance Between PCM Test Pin 91 And Test Pins 71 & 97
      G03275394Courtesy of FORD MOTOR CO.
    • Measure the resistance between PCM test pin 3 and test pins 24, 71, 97, 51, 76, 77, 103 and 91 at the EEC-V Control System Breakout Box and ground.
      Fig 7: Measuring Resistance Between PCM Test Pin 3 And 24, 71, 97, 51, 76, 77, 103, 91 & Ground
      G03275395Courtesy of FORD MOTOR CO.
    • Measure the resistance between PCM test pin 49 and test pins 24, 71, 97, 51, 76, 77, 103 and 91 at the EEC-V Control System Breakout Box and ground.
      Fig 8: Measuring Resistance Between PCM Test Pin 49 And 24, 71, 97, 51, 76, 77, 103, 91 & Ground
      G03275396Courtesy of FORD MOTOR CO.
    • Measure the resistance between PCM test pin 50 and test pins 24, 71, 97, 51, 76, 77, 103 and 91 at the EEC-V Control System Breakout Box and ground.
      Fig 9: Measuring Resistance Between PCM Test Pin 50 And 24, 71, 97, 51, 76, 77, 103, 91 & Ground
      G03275397Courtesy of FORD MOTOR CO.
    • Measure the resistance between PCM test pin 64 and test pins 24, 71, 97, 51, 76, 77, 103 and 91 at the EEC-V Control System Breakout Box and ground.
      Fig 10: Measuring Resistance Between PCM Test Pin 64 And 24, 71, 97, 51, 76, 77, 103, 91 & Ground
      G03275398Courtesy of FORD MOTOR CO.
    • Are all resistances greater than 10,000 ohms? 
    1. Yes  : GO to C9.
    2. No  : REPAIR short circuit(s). RECONNECT all components. CLEAR DTCs. RERUN OBD Tests.
  9. C9 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: Measuring Resistance Between Test Pin 3 And 49, 50 & 64
      G03275399Courtesy 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: Measuring Resistance Between Test Pin 49 And Pins 3, 50 & 64
      G03275400Courtesy 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: Measuring Resistance Between Test Pin 50 And Pins 3, 49 & 64
      G03275401Courtesy 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: Measuring Resistance Between Test Pin 64 And Pins 3, 49 & 50
      G03275402Courtesy of FORD MOTOR CO.
    • Are all the resistances greater than 10,000 ohms? 
    1. Yes  : INSTALL a new PCM. RECONNECT all components. CLEAR DTCs and RERUN OBD Tests.
    2. 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. C10 CHECK THE NON-PCM INTERNAL CIRCUITS OF SENSOR 
    • Connect: TR-E Cable to Transmission.
    • Connect: TR-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? 
    1. Yes  : Concern is not in the digital TR sensor. For start system concerns, REFER to STARTERS . For backup lamp concerns, REFER to EXTERIOR LIGHTING . For optional circuits: 4x4 Low Neutral Sense, REFER to the INTRODUCTION - CNG, FLEX-FUEL & GASOLINE article and FOUR WHEEL DRIVE SYSTEMS for diagnosis.
    2. No  : INSTALL a new digital TR sensor. REFER to DIGITAL TRANSMISSION RANGE (TR) SENSOR . CLEAR DTCs and RERUN OBD Tests.
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