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Home >> Mercury >> 2009 >> Mariner Base, 2.5 7, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 128 (Automatic Transmission) >> Diagnostic Tests >> Pinpoint Tests - OSC Equipped Vehicle >> Pinpoint Tests >> Pinpoint Test C: Digital Transmission Range (Tr) Sensor

Pinpoint Test C: Digital Transmission Range (Tr) Sensor

WARNING: This page is about a different car, the 2009 Mercury Grand Marquis and 2009 Ford Crown Victoria. 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 in Transmission Connector Layouts .
NOTE: Refer to the Digital Transmission Range (TR) Sensor Diagnosis Chart in Transmission Connector Layouts .
  1. C1 VERIFY DTCs 
    WARNING: If equipped with fire suppression system, depower the system. For important safety warnings and procedures, refer to FIRE SUPPRESSION SYSTEM article.
    • Vehicle in PARK.
    • Key in OFF position.
    • Check to make sure the transmission harness connector is fully seated, pins are fully engaged in connector and in good condition before proceeding.
    • Connect the diagnostic tool.
    • Key in ON position.
      • NOTE: DTCs P0705 and P0708 cannot be set by an incorrectly adjusted digital transmission range (TR) sensor.
    • Retrieve DTCs.
    • Are only DTCs P0705, P0708 present? 
    1. YES  : Go to  C4.
    2. NO  : Go to  C2.
  2. C2 VERIFY DIGITAL TR 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.
    • Vehicle in NEUTRAL.
    • Disconnect the selector lever 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? 
    1. YES  : Go to  C3.
    2. NO  : ADJUST the digital TR sensor. Refer to Transmission Range (TR) Sensor Adjustment . PLACE transmission selector lever in P and CLEAR DTCs. TEST the system for normal operation. Go to  C3 .
  3. C3 VERIFY SELECTOR LEVER CABLE/LINKAGE ADJUSTMENT 
    • Place the manual lever in the OVERDRIVE position.
    • Re-connect the selector lever cable/linkage.
    • Verify that the selector lever cable/linkage is adjusted OK. Refer to AUTOMATIC TRANSAXLE/TRANSMISSION EXTERNAL CONTROLS article.
    • Is the selector lever cable/linkage adjusted OK?  
    1. YES  : Go to  C4.
    2. NO  : ADJUST the selector lever cable/linkage. REFER to AUTOMATIC TRANSAXLE/TRANSMISSION EXTERNAL CONTROLS article. If equipped with a fire suppression system, go to  C11.
  4. C4 CHECK ELECTRICAL SIGNAL OPERATION 
    • Vehicle in PARK.
    • Disconnect: Digital TR Sensor C167
      • NOTE: 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? 
    1. YES  : REPAIR as required. CLEAR DTCs and TEST the system for normal operation. If equipped with a fire suppression system, go to  C11.
    2. NO  : If diagnosing a DTC, go to  C5 .

      If diagnosing a starting concern or a reversing lamp concern, go to  C6 .

  5. C5 CHECK ELECTRICAL SYSTEM OPERATION (DIGITAL TR AND PCM) 
    • Connect: Digital TR Sensor C167
    • Key in ON position.
    • Access the transmission PIDs.
    • Move transmission range selector lever into each gear and stop.
    • Observe the following PIDs, TR1, TR2, TR3, TR4, and TR3_V while wiggling harness, tapping on sensor and/or driving the vehicle.
    • Compare the PIDs to the Digital Transmission Range (TR) Sensor Diagnosis Chart.
    • Do the PIDs TR1, TR2, TR3, TR4 and TR3_V match the Digital TR Sensor Diagnosis Chart, and do PIDs remain steady when the harness is wiggled, the sensor is tapped or the vehicle driven? 
    1. YES  : The problem is not in the digital TR sensor system. REFER to Diagnosis By Symptom  in this article for further diagnosis. If equipped with a fire suppression system, go to  C11.
    2. NO  : If the PIDs change when wiggling harness, tapping on the sensor or driving the vehicle, the problem may be intermittent.

      Go to  C7.

  6. C6 CHECK DIGITAL TR SENSOR OPERATION 
    • Disconnect: Digital TR Sensor C167
      • Fig 1: Measuring Resistance
      GF0009956Courtesy of FORD MOTOR CO.
      NOTE: Do not pry on connector. This will damage the connector and result in a transmission concern.
    • Measure the resistance between digital TR sensor pin 10 and pin 12, component side, with the selector lever in PARK and then NEUTRAL.
      • Fig 2: Measuring Resistance
      GF0009957Courtesy of FORD MOTOR CO.
    • Measure the resistance between digital TR sensor pin 9 and pin 11, component side, with the selector lever in REVERSE.
    • Are all resistances less than 5 ohms? 
    1. YES  : Concern is not in the digital TR sensor. REFER to STARTING SYSTEM article or EXTERIOR LIGHTING article. If equipped with a fire suppression system, go to  C11.
    2. NO  : INSTALL a new digital TR sensor. CLEAR DTCs and TEST the system for normal operation. If equipped with a fire suppression system, go to  C11.
  7. C7 CHECK DIGITAL TR SENSOR OPERATION 
    • Disconnect: Digital TR Sensor C167
      • Fig 3: Measuring Resistance
      GF0009958Courtesy of FORD MOTOR CO.
      NOTE: Do not pry on connector. This will damage the connector and result in a transmission concern.
    • Measure the resistance between digital TR sensor pin 2 and pins 3, 4, 5 and 6, component side, with the selector lever in each position. Compare the measurements to the Digital Transmission Range (TR) Sensor Diagnosis Chart.
    • Do the measurements match Digital Transmission Range (TR) Sensor Diagnosis Chart? 
    1. YES  : Concern is not in the digital TR sensor, go to  C8 .
    2. NO  : INSTALL a new digital TR sensor. CLEAR DTCs and TEST the system for normal operation. REPEAT OBD Tests. If equipped with a fire suppression system, go to  C11.
  8. C8 CHECK PCM HARNESS CIRCUITS FOR OPENS 
    • Key in OFF position.
    • Disconnect: PCM C175T
    • Disconnect: Digital TR Sensor C167
      NOTE: Do not pry on connector. This will damage the connector and result in a transmission concern.
    • Inspect for damaged or pushed-out pins, corrosion or loose wires.
      • Fig 4: Measuring Resistance
      GF0012334Courtesy of FORD MOTOR CO.
    • Measure the resistance between PCM C175T-41, circuit 359 (GY/RE), harness side, and digital TR sensor C167-2, circuit 359 (GY/RE), harness side.
      • Fig 5: Measuring Resistance
      GF0012335Courtesy of FORD MOTOR CO.
    • Measure the resistance between PCM C175T-16, circuit 1144 (YE/BK), harness side, and digital TR sensor C167-4, circuit 1144 (YE/BK), harness side.
      • Fig 6: Measuring Resistance
      GF0012336Courtesy of FORD MOTOR CO.
    • Measure the resistance between PCM C175T-17, circuit 1145 (LB/BK), harness side, and digital TR sensor C167-5, circuit 1145 (LB/BK), harness side.
      • Fig 7: Measuring Resistance
      GF0012337Courtesy of FORD MOTOR CO.
    • Measure the resistance between PCM C175T-28, circuit 1143 (WH/BK), harness side, and digital TR sensor C167-6, circuit 1143 (WH/BK), harness side.
      • Fig 8: Measuring Resistance
      GF0012338Courtesy of FORD MOTOR CO.
    • Measure the resistance between PCM C175T-27, circuit 1266 (RD/BK), harness side, and digital TR sensor C167-3, circuit 1266 (RD/BK), harness side.
    • Are all resistances less than 5 ohms? 
    1. YES  : Go to  C9.
    2. NO  : REPAIR open circuit(s). RECONNECT all components. CLEAR DTCs. TEST the system for normal operation. If equipped with a fire suppression system, go to  C11.
  9. C9 CHECK PCM HARNESS CIRCUITS FOR A SHORT TO GROUND OR POWER 
      Fig 9: Measuring Resistance
      GF0012339Courtesy of FORD MOTOR CO.
    • Measure the resistance between PCM C175T-41, circuit 359 (GY/RD), harness side, and ground.
      • Fig 10: Measuring Resistance
      GF0012340Courtesy of FORD MOTOR CO.
    • Measure the resistance between PCM C175T-16, circuit 1144 (YE/BK), harness side, and ground.
      • Fig 11: Measuring Resistance
      GF0003450Courtesy of FORD MOTOR CO.
    • Measure the resistance between PCM C175T-17, circuit 1145 (LB/BK), harness side, and ground.
      • Fig 12: Measuring Resistance
      GF0012341Courtesy of FORD MOTOR CO.
    • Measure the resistance between PCM C175T-28, circuit 1143 (WH/BK), harness side, and ground.
      • Fig 13: Measuring Resistance
      GF0012342Courtesy of FORD MOTOR CO.
    • Measure the resistance between PCM C175T-27, circuit 1266 (RD/BK), harness side, and chassis ground.
    • Are all resistances greater than 10,000 ohms? 
    1. YES  : Go to  C10.
    2. NO  : REPAIR short circuit(s). RECONNECT all components. CLEAR DTCs. TEST the system for normal operation. If equipped with a fire suppression system, go to  C11.
  10. C10 CHECK FOR A SHORT BETWEEN TR/PCM INPUT SIGNAL CIRCUITS 
      Fig 14: Measuring Resistance
      GF0009968Courtesy of FORD MOTOR CO.
    • Measure the resistance between PCM C175T-16, circuit 1144 (YE/BK) and PCM C175T-17, circuit 1145 (LB/BK), C175T-27, circuit 1268 (RD/BK) and C175T-28 circuit 1143 (WH/BK).
      • Fig 15: Measuring Resistance
      GF0009969Courtesy of FORD MOTOR CO.
    • Measure the resistance between PCM C175T-17 circuit 1145 (LB/BK) and PCM C175T-27 circuit 1268 (RD/BK) and C175T-28 circuit 1143 (WH/BK).
      • Fig 16: Measuring Resistance
      GF0009970Courtesy of FORD MOTOR CO.
    • Measure the resistance between PCM C175T-27, circuit 1268 (RD/BK) and PCM C175T-28, circuit 1143 (WH/BK).
    • Are all the resistances greater than 10,000 ohms? 
    1. YES  : INSTALL a new PCM. REFER to ELECTRONIC ENGINE CONTROLS article. RECONNECT all components. CLEAR DTCs. TEST the system for normal operation. If equipped with a fire suppression system, Go to  C11.
    2. NO  : REPAIR shorts on circuits having less than 10,000 ohms between other TR/PCM input signal circuits. RECONNECT all components. CLEAR DTCs. TEST the system for normal operation. If equipped with a fire suppression system, go to  C11.
  11. C11 REPOWER THE FIRE SUPPRESSION SYSTEM 
    WARNING: If equipped with fire suppression system, repower the system. For important safety warnings and procedures, refer to FIRE SUPPRESSION SYSTEM article.
    • Verify that the fire suppression system is repowered. Refer to FIRE SUPPRESSION SYSTEM article.
    • Is the fire suppression system repowered? 
    1. YES  : Fire suppression system repowering is complete.
    2. NO  : REFER to FIRE SUPPRESSION SYSTEM article for fire suppression system depowering and repowering procedure.
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