Subaru Forester 1998-05

Camshaft Position Sensor

Print

Description & Operation



The camshaft position sensor relays the relative camshaft position to the ECM for determining the position and stroke of the No. 1 cylinder. This information is required for proper fuel injection functioning.

Removal & Installation



  1. Disconnect the negative battery cable.
  2.  
  3. Remove the collector cover, as required.
  4.  
  5. Disconnect the connector from the sensor.
  6.  
  7. Remove the bolt that retains the sensor to the sensor support.
  8.  
  9. Remove the bolt that retains the sensor support to the camshaft cap.
  10.  
  11. Remove the sensor and the sensor support as a unit.
  12.  
  13. Separate the sensor from the support.
  14.  

To install:

  1. Installation is the reverse of the removal procedure.
  2.  
  3. Tighten the sensor support to 4.7 ft. lbs.
  4.  
  5. Tighten the sensor to 4.7 ft. lbs.
  6.  

Testing



2.5L DOHC Engine
  1. Using the Subaru scan tool, check the sensor output waveform.
  2.  
  3. With the engine OFF and the ignition switch ON the signal (V) should be 0-0.9.
  4.  
  5. The measurement is taken using connector B135 terminal 8 for the left side and connector B135 terminal 9 for the right side.
  6.  
  7. If abnormality is found, replace the sensor.

    Click image to see an enlarged view

    Fig. Camshaft position sensor connector location-Forester 2004-2005 2.5L DOHC engine

  8.  

2.5L SOHC Engine
  1. Remove the sensor from the vehicle.
  2.  
  3. Measure the resistance between the two connector terminals of the sensor, (terminals 1 and 2).
  4.  
  5. If measured value is not within 1-4 kohms, replace the sensor.
  6.  

 
label.common.footer.alt.autozoneLogo