Chrysler Caravan/Voyager/Town and Country 1996-1999

Camshaft Position Sensor

Print

OPERATION



See Figures 1, 2 and 3



Click image to see an enlarged view

Fig. Fig. 1: Camshaft position sensor location/mounting bolt removal-3.3L and 3.8L engines



Click image to see an enlarged view

Fig. Fig. 2: Camshaft position sensor location-2.4L engine



Click image to see an enlarged view

Fig. Fig. 3: Camshaft position sensor and spacer-3.3L and 3.8L engines

The camshaft position sensor (along with the crankshaft position sensor) provides inputs to the PCM to determine fuel injection synchronization and cylinder identification. From these inputs, the PCM determines crankshaft position.

The 3.0L engine is equipped with a camshaft driven mechanical distributor, which is equipped with an internal camshaft position (fuel sync) sensor.

On the 2.4L engine, the camshaft position sensor mounts to the rear of the cylinder head. The sensor also serves as a thrust plate to control end-play of the camshaft.

On 3.3L and 3.8L engines, the camshaft position sensor mounts to the top of the timing case cover, in which the bottom of the sensor is positioned above the camshaft sprocket.

TESTING



See Figures 4 and 5



Click image to see an enlarged view

Fig. Fig. 4: Camshaft position sensor connector terminal identifications



Click image to see an enlarged view

Fig. Fig. 5: Camshaft position sensor target magnet polarity-2.4L engine

To test this sensor, you will need the use of an oscilloscope.

Visually check the connector, making sure it is attached properly and that all of the terminals are straight, tight and free of corrosion.

The output voltage of a properly operating camshaft position sensor switches from high (5.0 volts) to low (0.3 volts). By connecting an oscilloscope to the sensor output circuit, you can view the square wave pattern produced by the voltage swing.

REMOVAL & INSTALLATION



2.4L Engine

See Figures 2, 6 and 7

  1. Disconnect the negative battery cable.
  2.  
  3. Disconnect the filtered air tube from the throttle body and air cleaner housing. Disconnect the air tube from the oil separator hose. Remove the filtered air tube.
  4.  
  5. Remove the air cleaner inlet tube from the vehicle.
  6.  
  7. Detach the electrical harness connector from the camshaft position sensor.
  8.  
  9. Unfasten the camshaft position sensor mounting screws, then remove the sensor.
  10.  



Click image to see an enlarged view

Fig. Fig. 6: Camshaft position sensor target magnet



Click image to see an enlarged view

Fig. Fig. 7: Showing the camshaft position sensor target magnet alignment tabs

  1. Loosen the screw/bolt attaching the target magnet to the rear of the camshaft.
  2.  

To install:

The target magnet has 2 locating dowels which fit into the 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 50 inch lbs. (7 Nm).
  2.  
  3. Install a new O-ring onto the sensor.
  4.  
  5. Install the camshaft position sensor. Tighten the sensor mounting screws to 85 inch lbs. (10 Nm).
  6.  
  7. Carefully attach the electrical harness connector to the camshaft position sensor. Be careful, since installation at any angle may damage the pins.
  8.  
  9. Install the air cleaner inlet tube and filtered air tube.
  10.  
  11. Connect the negative battery cable.
  12.  

3.0L Engine

The 3.0L engine is equipped with a distributor unit containing an integral camshaft position sensor. If the camshaft position sensor fails, the distributor assembly must be replaced. For distributor service, refer to Engine Electrical .

3.3L and 3.8L Engines

See Figures 1 and 3

  1. Disconnect the negative battery cable.
  2.  
  3. Detach the electrical harness connector from the camshaft position sensor.
  4.  
  5. Unfasten the camshaft position sensor mounting bolt. There is a hole in the bracket for tool access to the sensor mounting bolt.
  6.  
  7. Rotate the sensor away from the engine block.
  8.  
  9. Pull the camshaft position sensor up out of the chain case cover. Do not pull on the sensor wire.
  10.  

There is an O-ring on the sensor case. The O-ring may make removal of the sensor difficult. A light tap on top of the sensor prior to removal may reduce the force needed for removal. Inspect the O-ring for damage and replace if necessary.

To install:

If the sensor removed is going to be re-installed, clean off the old spacer on the sensor face. A new spacer must be attached to the sensor face before installation. If the sensor is being replaced, be sure that a paper spacer is attached to the sensor face and an O-ring is positioned in the groove of the new sensor.

  1. Apply 1-2 drops of clean engine oil to the O-ring prior to installing the sensor.
  2.  
  3. Install the sensor into the chain case cover and rotate into position.
  4.  
  5. Push down on the sensor until contact is made with the camshaft gear. While holding the sensor in this position, install and tighten the mounting bolt to 10 ft. lbs. (14 Nm).
  6.  
  7. Attach the electrical harness connector to the camshaft position sensor.
  8.  
  9. Connect the negative battery cable.
  10.  

 
label.common.footer.alt.autozoneLogo