Sebring 2006

Camshaft Position Sensor

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Description & Operation



The Powertrain Control Module (PCM) sends approximately 5 volts to the Hall-effect sensor. This voltage is required to operate the Hall-effect chip and the electronics inside the sensor. The input to the PCM occurs on a 5 volt output reference circuit. A ground for the sensor is provided through the sensor return circuit. The PCM identifies camshaft position by registering the change from 5 to 0 volts, as signaled from the camshaft position sensor.

The PCM determines fuel injection synchronization and cylinder identification from inputs provided by the camshaft position sensor and crankshaft position sensor. From the two inputs, the PCM determines crankshaft position.

Removal & Installation



2.4L Engines
  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Remove the negative battery cable.
  4.  
  5. Disconnect the PCV hose and reposition.
  6.  
  7. Disconnect the electrical connectors from the Camshaft Position (CMP) sensor.
  8.  
  9. Remove the CMP sensor mounting screws.
  10.  
  11. Remove the CMP sensor.
  12.  
  13. Loosen the screw attaching the target magnet to the rear of the camshaft and remove the magnet.
  14.  

To install:


NOTE
The target magnet has locating dowels that fit into machined locating holes in the end of the camshaft.

  1. Install the target magnet in the end of the camshaft. Tighten the mounting screw to 27 inch lbs. (3 Nm).
    NOTE
    Over-tightening could cause cracks in the magnet. If the magnet cracks, replace it.

  2.  
  3. Install the CMP sensor. Tighten the sensor mounting screws to 115 inch lbs. (13 Nm) torque.
  4.  
  5. Carefully attach the electrical connector to the CMP sensor. Installation at an angle may damage the sensor pins.
  6.  
  7. Connect the PCV Valve hose.
  8.  
  9. Connect the negative battery cable.
  10.  

2.7L Engine
  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Disconnect the electrical connector from the Camshaft Position (CMP) sensor.
  4.  
  5. Remove the CMP sensor screw.
  6.  
  7. Without pulling on the connector, pull the CMP sensor out of the chain case cover.
  8.  

To install:

  1. Install the CMP sensor in the chain case cover and push the sensor in until contact is made with the boss on the head. While holding the CMP sensor in this position, install and tighten the retaining bolt to 106 inch lbs. (12 Nm) torque.
  2.  
  3. Attach the electrical connector to the CMP sensor.
  4.  

Testing



  1. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Camshaft Position (CMP) sensor and the Powertrain Control Module (PCM).
  2.  
  3. Look for any chafed, pierced, pinched, or partially broken wires.
  4.  
  5. Look for broken, bent, pushed out, or corroded terminals.
  6.  
  7. Inspect the CMP sensor for conditions such as loose mounting screws, damage, or cracks.
  8.  
  9. If no other problems are found, remove the CMP sensor.
  10.  
  11. Inspect the CMP sensor and mounting area for any condition that would result in an incorrect signal, such as damage, foreign material, or excessive movement.
  12.  
  13. Using a diagnostic scan tool, check for the presence of any Diagnostic Trouble Codes (DTC-s). Record and address these codes as necessary.
  14.  
  15. If no codes are present, review the scan tool environmental data. If possible, try to duplicate the conditions under which the DTC set.
  16.  
  17. If applicable, actuate the component with the scan tool.
  18.  
  19. Monitor the scan tool data relative to this circuit and wiggle test the wiring and connectors.
  20.  
  21. Look for the data to change, the actuation to be interrupted, or for the DTC to reset during the wiggle test.
  22.  
  23. Refer to any Technical Service Bulletins (TSBs) that may apply.
  24.  
  25. Turn the ignition off.
  26.  
  27. Visually inspect the related wire harness. Disconnect all the related harness connectors. Look for any chafed, pierced, pinched, partially broken wires and broken, bent, pushed out, or corroded terminals.
  28.  
  29. Perform a voltage drop test on the related circuits between the suspected component and the Powertrain Control Module (PCM).
  30.  
  31. Inspect and clean all PCM, engine, and chassis grounds that are related to the most current DTC.
  32.  
  33. If numerous trouble codes were set, use a schematic and inspect any common ground or supply circuits.
  34.  
  35. For intermittent Misfire DTC-s check for restrictions in the Intake and Exhaust system, proper installation of Sensors, vacuum leaks, and binding components that are run by the accessory drive belt.
  36.  
  37. Use the scan tool to perform a System Test if one applies to the component.
  38.  
  39. A co-pilot, data recorder, and/or lab scope should be used to help diagnose intermittent conditions.
  40.  

 
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