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Home >> Ford >> 2011 >> Fiesta SEL, Standard >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 1 (Automatic Transmission - Automatic Shifting Manual Transmission/Transaxle) >> Diagnosis And Testing >> Pinpoint Tests >> Pinpoint Tests >> Pinpoint Test D: Tr Sensor

Pinpoint Test D: Tr Sensor

WARNING: This page is about a different variant/trim than selected.
NOTE: Refer to the transaxle connector illustrations TRANSAXLE CONNECTOR LAYOUTS  in this information.
  1. D1 VERIFY SELECTOR LEVER CABLE/LINKAGE ADJUSTMENT 
  2. D2 CHECK THE TRANSAXLE WIRING HARNESS FOR AN OPEN CIRCUIT 
    • Ignition OFF.
    • Disconnect: Transmission Control Module (TCM) C1750B.
    • Inspect both ends of the connector for damage or pushed-out pins, corrosion, loose wires and missing or damaged seals.
    • Disconnect: Transmission Range (TR) sensor C167.
    • Inspect both ends of the connector for damage or pushed-out pins, corrosion, loose wires and missing or damaged seals.
    • Measure the resistance between TCM  C1750B, harness side and TR  sensor C167, using the following chart.
      RESISTANCE REFERENCE CHART

      TCM Transmission Range Sensor
      C1750-24 C167-4
      C1750-25 C167-1
      C1750-34 C167-3
      C1750-35 C167-2
    • Is the resistance less than 5 ohms? 
    • Yes:  Go to D3  .
    • No:  REPAIR the circuit(s) for an open. RECONNECT all components. TEST the system for normal operation.
  3. D3 CHECK THE TRANSAXLE WIRING HARNESS FOR A SHORT TO GROUND 
    • Measure the resistance between TCM  C1750B, harness side and ground using the following chart.
      RESISTANCE REFERENCE CHART

      TCM Ground
      C1750B-24 Ground
      C1750B-25 Ground
      C1750B-34 Ground
      C1750B-35 Ground
    • Is the resistance greater than 10,000 ohms? 
    • Yes:  Inspect the transaxle wiring harness for signs of physical damage and repair or install a new transaxle wiring harness as necessary. TEST the system for normal operation. If the transaxle wiring harness is not damaged, go to D4  .
    • No:  REPAIR the circuit(s) for a short to ground. RECONNECT all components. TEST the system for normal operation.
  4. D4 CHECK THE TCM 
    • Connect: Transmission Control Module (TCM) C1750B.
    • Inspect both ends of the connector for damage or pushed-out pins, corrosion, loose wires and missing or damaged seals.
    • Ignition ON.
    • Measure the voltage between TR  sensor C167-3, harness side and TR  sensor C167-2, harness side.
      Fig 1: Checking Voltage Between Selected TR Sensor Connector Terminals
      G06939247Courtesy of FORD MOTOR CO.
    • Is the voltage between 4.5 and 5.5 volts? 
    • Yes:  INSTALL a new TR  sensor. RECONNECT all components. TEST the system for normal operation.
    • No:  INSTALL a new TCM  . RECONNECT all components. TEST the system for normal operation.
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