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Pinpoint Test D: Digital Transmission Range (Tr) Sensor

WARNING: This page is about a different car, the 2007 Lincoln MKX and 2007 Ford Edge. 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 Transaxle Connector Layouts .
NOTE: Refer to the Digital Transmission Range (TR) Sensor Diagnosis Chart Transaxle Connector Layouts .
  1. D1 VERIFY DTCs 
    • Key in OFF position.
    • Select PARK.
    • Carry out the On-Board Diagnostics Test. DTCs P0705 and P0708 cannot be set by an incorrectly adjusted selector lever cable.
    • Are only DTC codes P0705, P0708 present? 
    1. YES  : Go to  D3.
    2. NO  : Go to  D2.
  2. D2 VERIFY SELECTOR LEVER CABLE/LINKAGE ADJUSTMENT 
    • Disconnect the selector lever cable end from the manual control lever.
    • Place the transaxle manual control lever in the DRIVE position.
    • Select DRIVE.
    • Reconnect the selector lever cable/linkage.
    • Verify that the selector lever cable/linkage is correctly adjusted. Refer to AUTOMATIC TRANSAXLE/TRANSMISSION EXTERNAL CONTROLS .
    • Is the selector lever cable/linkage correctly adjusted? 
    1. YES  : Go to  D3.
    2. NO  : ADJUST the selector lever cable/linkage. REFER to AUTOMATIC TRANSAXLE/TRANSMISSION EXTERNAL CONTROLS . Go to  D4 .
  3. D3 CHECK THE ELECTRICAL SIGNAL OPERATION 
    • Select PARK.
    • Disconnect: PCM Transaxle Connector C175t
    • Disconnect: Transaxle Vehicle Harness Connector C168
    • Use a mirror to inspect both ends of the connectors for damaged or pushed-out pins, corrosion, loose wires and missing or damaged seals.
    • Is there damage to the connectors, pins or harness? 
    1. YES  : REPAIR as required. CLEAR DTCs and RERUN OBD Tests.
    2. NO  : Go to  D4 .
  4. D4 CHECK ELECTRICAL SYSTEM OPERATION (DIGITAL TR AND PCM) 
    • Key in OFF position.
    • Connect the diagnostic tool.
    • Connect: PCM Transaxle Connector C175t
    • Connect: Transaxle Vehicle Harness Connector C168
    • Key in ON position.
    • Enter the following diagnostic mode on the diagnostic tool: TR PIDs TR, TR1, TR2, TR3, TR4
    • Move the transmission range selector lever into each gear and stop.
    • Observe any of the following PIDs, (vehicle-dependent) TR and TR1, TR2, TR3, TR4 while wiggling harness, tapping on sensor, or driving the vehicle.
    • Compare the PIDs to the Digital Transmission Range (TR) Sensor Diagnosis Chart.
    • Do the PIDs TR, TR1, TR2, TR3, TR4 match the Digital Transmission Range (TR) Sensor Diagnosis chart, and do they remain steady when the harness is wiggled, the sensor is tapped on or the vehicle driven? 
    1. YES  : The problem is not in the digital TR sensor system. REFER to Diagnosis By Symptom  for further diagnosis.
    2. NO  : If the PIDs change when wiggling the harness, tapping on the sensor or driving the vehicle, the problem may be intermittent. Go to  D5 .
  5. D5 CHECK THE VEHICLE HARNESS FOR AN OPEN 
    • Disconnect: PCM Transaxle Connector C175t
    • Disconnect: Transaxle Vehicle Harness Connector C168
      • Fig 1: Measuring Resistance For TR Sensor Circuits Between Transaxle Vehicle Harness Connector C168 & PCM Transaxle Connector C175T
      GF0031624Courtesy of FORD MOTOR CO.
    • Measure the resistance for the TR sensor circuits between the transaxle vehicle harness connector C168 and the PCM transaxle connector C175t.
      Transmission Range Sensor Circuit Transaxle Connector Pin PCM Connector Pin
      TR-1 VET29 (VT/WH) 4 17
      TR-2 VET30 (YE) 5 18
      TR-3 VET31 (BU/OG) 6 19
      TR-4 VET32 (VT) 7 32
      TR Ground RET24 (BN/BU) 8 45
    • Is the resistance less than 5 ohms? 
    1. YES  : Go to  D6 .
    2. NO  : REPAIR the circuit. CONNECT all components. TEST the system for normal operation.
  6. D6 CHECK THE VEHICLE HARNESS FOR A SHORT TO GROUND 
      Fig 2: Measuring Resistance For TR Sensor Circuits Between Transaxle Vehicle Harness Connector C168 & Ground
      GF0031625Courtesy of FORD MOTOR CO.
    • Measure the resistance for the TR sensor circuits between the transaxle vehicle harness connector C168 and ground.
      Transmission Range Sensor Circuit Transaxle Connector Pin
      TR-1 VET29 (VT/WH) 4
      TR-2 VET30 (YE) 5
      TR-3 VET31 (BU/OG) 6
      TR-4 VET32 (VT) 7
      TR Ground RET24 (BN/BU) 8
    • Are all resistances greater than 10,000 ohms? 
    1. YES  : Go to  D7.
    2. NO  : REPAIR shorted circuit(s). RECONNECT all components. TEST the system for normal operation.
  7. D7 CHECK THE VEHICLE HARNESS FOR A SHORT TO POWER 
      Fig 3: Measuring Voltage For TR Sensor Circuits Between Transaxle Vehicle Harness Connector C168 & Ground
      GF0031626Courtesy of FORD MOTOR CO.
    • Measure the voltage for the TR sensor circuits between the transaxle vehicle harness connector C168 and ground.
      Transmission Range Sensor Circuit Transaxle Connector Pin
      TR-1 VET29 (VT/WH) 4
      TR-2 VET30 (YE) 5
      TR-3 VET31 (BU/OG) 6
      TR-4 VET32 (VT) 7
      TR Ground RET24 (BN/BU) 8
    • Is any voltage present? 
    1. YES  : REPAIR shorted circuit(s). RECONNECT all components. TEST the system for normal operation.
    2. NO  : Go to  D8.
  8. D8 CHECK FOR A SHORT BETWEEN TR/PCM INPUT SIGNAL CIRCUITS 
    • Measure the resistance between TR sensor circuits.
      Transmission Range Sensor Circuit Transaxle Connector Pin
      TR-1 VET29 (VT/WH) 4
      TR-2 VET30 (YE) 5
      TR-3 VET31 (BU/OG) 6
      TR-4 VET32 (VT) 7
      TR Ground RET24 (BN/BU) 8
    • Are all resistances greater than 10,000 ohms? 
    1. YES  : Go to  D9.
    2. NO  : REPAIR shorts on circuits having less than 10,000 ohms between other TR/PCM input signal circuits. RECONNECT all components. TEST the system for normal operation.
  9. D9 CHECK FOR AN INTERNAL SOLENOID BODY OPEN FOR THE TR SENSOR CIRCUITS 
    • Remove the main control cover. Refer to Main Control Cover .
    • Disconnect: Transmission Range (TR) Sensor Connector
    • Use a mirror to inspect both ends of the connector for damage or pushed-out pins, corrosion, loose wires and missing or damaged seals.
      • Fig 4: Measuring Resistance Of TR Sensor Circuits Between Transaxle Vehicle Harness Connector & TR Sensor Connector
      GF0031627Courtesy of FORD MOTOR CO.
    • Measure the resistance of the TR sensor circuits between the transaxle vehicle harness connector, component side and the TR sensor connector, solenoid body side.
      Transmission Range (TR) Sensor Circuit Transaxle Vehicle Harness Connector Pin (Component Side) TR Sensor Connector Pin (Solenoid Body Side)
      TR-1 4 E
      TR-2 5 D
      TR-3 6 C
      TR-4 7 B
      TR Ground 8 A
    • Is the resistance less than 5 ohms? 
    1. YES  : INSTALL a new TR sensor. REFER to Digital Transmission Range (TR) Sensor . RECONNECT all components. TEST the system for normal operation.
    2. NO  : INSTALL a new solenoid body. REFER to Solenoid Body Assembly . RECONNECT all components. TEST the system for normal operation.
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