Pinpoint Test C: Digital Transmission Range (TR) Sensor

WARNING: This page is about a different car, the 2005 Ford RV Cutaway, 2005 Ford Econoline, and 2005 Ford Cutaway. 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.

C1 VERIFY DIAGNOSTIC TROUBLE CODES
- Select PARK.
- Key in OFF position.
- Carry out on-board diagnostic test.
- Are only DTC codes P0705, P0708 present?
- Yes : GO to C4.
- No : GO to C2.
C2 VERIFY DIGITAL TRANSMISSION RANGE SENSOR ALIGNMENT
- Check to make sure the digital TR sensor harness connector is fully seated, pins 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 adjustment OK?
- Yes : GO to C3.
- No : ADJUST the digital TR sensor. PLACE transmission range selector lever in P and CLEAR DTCs. REPEAT OBD Tests. GO to C3.
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 adjusted OK.
- Is the shift cable/linkage adjusted OK?
- Yes : GO to C4.
- No : ADJUST the shift cable/linkage. REFER to AUTOMATIC TRANSAXLE/TRANSMISSION EXTERNAL CONTROLS for E-series, or AUTOMATIC TRANSMISSION EXTERNAL CONTROLS -- F150 PICKUP .
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.
  
  Press the button and pull out on the digital TR harness connector.
- Inspect both ends of the connector for damage or pushed-out pins, corrosion, loose wires and missing or damaged seals.
- Are the connector, pins and harness damaged?
- Yes : REPAIR as required. CLEAR DTCs and REPEAT OBD Tests.
- No : If diagnosing a DTC, GO to C5.
If diagnosing a starting concern or a reversing lamp concern, GO to C10.
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, TR_D, TR_V.
- Move transmission range selector lever into each gear and stop.
- Observe any of the following PIDs, TR and TR_D, TR_V (vehicle dependent) 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, 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 C6.
C6 CHECK DIGITAL TRANSMISSION RANGE SENSOR OPERATION
- Disconnect: Digital TR Sensor.
  CAUTION: Do not pry on the connector. This will damage the connector and result in a transmission concern.
- 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. CLEAR DTCs and REPEAT OBD Tests.
C7 CHECK PCM HARNESS CIRCUITS FOR OPENS
- Key in OFF position.
- Disconnect: Powertrain Control Module (PCM).
- Inspect for damaged or pushed-out pins, corrosion or loose wires.
- Disconnect: Digital TR Sensor.
  CAUTION: Do not pry on the connector. This will damage the connector and result in a transmission concern.
  
  Disconnect the digital TR sensor connector.
- Install the EEC-V Control System Breakout Box.
- Measure the resistance between the PCM test pin 41 and signal return circuit pin 2 at digital TR sensor connector harness side.
  
  Fig 1: Measuring Resistance Between PCM Connector And Digital TR Sensor Connector
  Courtesy of FORD MOTOR CO.
- Measure the resistance between the PCM test pin 16 and TR1 circuit pin 4 at digital TR sensor connector harness side.
  
  Fig 2: Measuring Resistance Between PCM Connector And Digital TR Sensor Connector
  Courtesy of FORD MOTOR CO.
- Measure the resistance between the PCM test pin 17 and TR2 circuit pin 5 at digital TR sensor connector harness side.
  
  Fig 3: Measuring Resistance Between PCM Connector And Digital TR Sensor Connector
  Courtesy of FORD MOTOR CO.
- Measure the resistance between the PCM test pin 28 and TR4 circuit pin 6 at digital TR sensor connector harness side.
  
  Fig 4: Measuring Resistance Between PCM Connector And Digital TR Sensor Connector
  Courtesy of FORD MOTOR CO.
- Measure the resistance between the PCM test pin 27 and TR3A circuit pin 3 at digital TR sensor connector harness side.
  
  Fig 5: Measuring Resistance Between PCM Connector And Digital TR Sensor Connector
  Courtesy of FORD MOTOR CO.
- Are all resistances less than 5 ohms?
- Yes : GO to C8.
- No : REPAIR open circuit(s). RECONNECT all components. CLEAR DTCs. REPEAT OBD Tests.
C8 CHECK PCM HARNESS CIRCUITS FOR SHORT TO GROUND OR POWER
- Measure the resistance between PCM test pin 41 and chassis ground.
  
  Fig 6: Measuring Resistance Between PCM Connector And Ground
  Courtesy of FORD MOTOR CO.
- Measure the resistance between PCM test pin 16 and chassis ground.
  
  Fig 7: Measuring Resistance Between PCM Connector And Ground
  Courtesy of FORD MOTOR CO.
- Measure the resistance between PCM test pin 17 and chassis ground.
  
  Fig 8: Measuring Resistance Between PCM Test Pin 17 And Chassis Ground
  Courtesy of FORD MOTOR CO.
- Measure the resistance between PCM test pin 28 and chassis ground.
  
  Fig 9: Measuring Resistance Between PCM Connector And Ground
  Courtesy of FORD MOTOR CO.
- Measure the resistance between PCM test pin 27 and chassis ground.
  
  Fig 10: Measuring Resistance Between PCM Connector And Ground
  Courtesy of FORD MOTOR CO.
- Are all resistances greater than 10,000 ohms?
- Yes : GO to C9.
- No : REPAIR short circuit(s). RECONNECT all components. CLEAR DTCs. REPEAT OBD Tests.
C9 CHECK FOR SHORT BETWEEN TR/PCM INPUT SIGNAL CIRCUITS
- Measure the resistance between PCM test pin 16 and PCM test pins 17, 27, and 28.
  
  Fig 11: Measuring Resistance Between PCM Connector Terminals
  Courtesy of FORD MOTOR CO.
- Measure the resistance between PCM test pin 17 and PCM test pins 16, 27, and 28.
  
  Fig 12: Measuring Resistance Between PCM Connector Terminals
  Courtesy of FORD MOTOR CO.
- Measure the resistance between PCM test pin 27 and PCM test pins 16, 17, and 28.
  
  Fig 13: Measuring Resistance Between PCM Connector Terminals
  Courtesy of FORD MOTOR CO.
- Measure the resistance between PCM test pin 28 and PCM test pins 16, 17, and 27.
  
  Fig 14: Measuring Resistance Between PCM Connector Terminals
  Courtesy of FORD MOTOR CO.
- Are all the resistances greater than 10,000 ohms?
- Yes : INSTALL a new PCM. REFER to POWERTRAIN CONTROL MODULE (PCM) for 4.2L, FUEL CHARGING & CONTROLS - 4.6L (2V) AND 5.4L (2V) , FUEL CHARGING & CONTROLS - 6.8L , FUEL CHARGING & CONTROLS - 6.0L DIESEL or FUEL CHARGING & CONTROLS - TURBOCHARGER . RECONNECT all components. CLEAR DTCs. REPEAT 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. REPEAT OBD Tests.
C10 CHECK THE NON-PCM INTERNAL CIRCUITS OF SENSOR
- Connect: TRS-E Cable to Transmission Tester.
- 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?
- Yes : Concern is not in the digital TR sensor. For starting system concerns, REFER to FUEL SYSTEM & ENGINE CONTROLS - 4.2L -- F150 PICKUP , FUEL CHARGING & CONTROLS - 4.6L (2V) AND 5.4L (2V) , FUEL CHARGING & CONTROLS - 6.8L , FUEL CHARGING & CONTROLS - 6.0L DIESEL or FUEL CHARGING & CONTROLS - TURBOCHARGER . For reversing lamp concerns, REFER to EXTERIOR LIGHTING . For optional circuits, See INTRODUCTION - GASOLINE and/or INTRODUCTION -- 6.0L DIESEL articles for diagnosis.
- No : INSTALL a new digital TR sensor. CLEAR DTCs. REPEAT OBD Tests.