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Home >> Mercury >> 2008 >> Milan Base, 2.3 Z, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 1410 (Automatic Transmission - FNR5) >> Diagnostic Tests >> Pinpoint Tests - OSC Equipped Vehicle >> Pinpoint Tests >> Pinpoint Test C: Tr Sensor

Pinpoint Test C: Tr Sensor

WARNING: This page is about a different car, the 2009 Mercury Milan and 2009 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Refer to the Transmission Range (TR) Sensor Connector illustration Transaxle Connector Layouts .
NOTE: Refer to the Transmission Range (TR) Sensor Diagnosis Chart Transaxle Connector Layouts .
  1. C1 VERIFY TR SENSOR ALIGNMENT 
    • Verify the Transmission Range (TR) sensor alignment.
    • Is the TR sensor correctly aligned? 
    1. YES  : Go to  C2.
    2. NO  : ADJUST the TR sensor. REFER to Transmission Range (TR) Sensor Adjustment . TEST the system for normal operation.
  2. C2 VERIFY THE SELECTOR LEVER CABLE/LINKAGE ADJUSTMENT 
    1. YES  : Go to  C3.
    2. NO  : ADJUST the selector lever cable/linkage. REFER to AUTOMATIC TRANSAXLE/TRANSMISSION EXTERNAL CONTROLS article. TEST the system for normal operation.
  3. C3 CHECK THE TR SENSOR CIRCUITRY FOR A SHORT TO GROUND 
    • Key in OFF position.
    • Disconnect: TR Sensor C1537
    • Disconnect: Transmission Control Module (TCM) C2352B
      • Fig 1: Measuring Resistance Between TR Sensor C1537-2, Circuit VET28 (GY/VT) & Ground
      GF0041447Courtesy of FORD MOTOR CO.
    • Measure the resistance between TR sensor C1537-2, circuit VET28 (GY/VT) and ground.
      • Fig 2: Measuring Resistance Between C1537-3, Circuit CET37 (BN/WH) & Ground
      GF0041448Courtesy of FORD MOTOR CO.
    • Measure the resistance between C1537-3, circuit CET37 (BN/WH) and ground.
    • Is the resistance greater than 10,000 ohms? 
    1. YES  : Go to  C4.
    2. NO  : REPAIR the circuit in question for an open. TEST the system for normal operation.
  4. C4 CHECK THE TR SENSOR CIRCUITRY FOR A SHORT TO POWER 
    • Disconnect: Transaxle C1534
      • Fig 3: Measuring Voltage Between TR Sensor C1537-2, Circuit VET28 (GY/VT) & Ground
      GF0041449Courtesy of FORD MOTOR CO.
    • Measure the voltage between TR sensor C1537-2, circuit VET28 (GY/VT) and ground.
      • Fig 4: Measuring Voltage Between TR Sensor C1537-3, Circuit CET37 (BN/WH) & Ground
      GF0041450Courtesy of FORD MOTOR CO.
    • Measure the voltage between TR sensor C1537-3, circuit CET37 (BN/WH) and ground.
    • Is the voltage greater than 10 volts? 
    1. YES  : REPAIR the circuit in question for a short to power. TEST the system for normal operation.
    2. NO  : Go to  C5.
  5. C5 CHECK THE TR SENSOR CIRCUITRY FOR AN OPEN 
      Fig 5: Checking TR Sensor Circuitry For An Open (1 Of 2)
      GF0029722Courtesy of FORD MOTOR CO.
    • Measure the resistance between TR sensor C1537-2, circuit VET28 (GY/VT) and TCM C2352B-5, circuit VET28 (GY/VT).
      • Fig 6: Checking TR Sensor Circuitry For An Open (2 Of 2)
      GF0029723Courtesy of FORD MOTOR CO.
    • Measure the resistance between TR sensor C1537-3, circuit CET37 (BN/WH) and TCM C2352B-21, circuit CET37 (BN/WH).
    • Are the resistances less than 5 ohms? 
    1. YES  : Go to  C6.
    2. NO  : REPAIR the circuit in question. TEST the system for normal operation.
  6. C6 CHECK THE TR SENSOR RESISTANCE 
      Fig 7: Checking TR Sensor Resistance
      GF0029724Courtesy of FORD MOTOR CO.
    • Measure the resistance between TR sensor pins 2 and 3 component side, while shifting the transmission manual control lever as follows:
      • PARK position, 3,370-5,230 ohms
      • REVERSE position, 1,250-1,750 ohms
      • NEUTRAL position, 630-870 ohms
      • DRIVE position, 330-450 ohms
      • LOW position, 150-250 ohms
    • Are the resistances within the expected values? 
    1. YES  : INSTALL a new TCM. TEST the system for normal operation.
    2. NO  : INSTALL a new TR sensor. REFER to Transmission Range (TR) Sensor . TEST the system for normal operation.
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