Montana SV6 (2006), Relay, Terraza, Uplander (2005-2007)

Camshaft Position Sensor

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Description & Operation



The Camshaft Position (CMP) sensor signal is a digital ON/OFF pulse output once per revolution of the camshaft. The CMP sensor does not directly affect the operation of the ignition system. The CMP sensor information is used by the powertrain control module (PCM) to determine the position of the valve train relative to the crankshaft position. By monitoring the CMP and crankshaft position (CKP) signals, the PCM can accurately time the operation of the fuel injectors. The PCM supplies the sensor with a 12-volt reference circuit, a low reference circuit, and a signal circuit.

Removal & Installation



  1. Remove the power steering pump.
  2.  
  3. Disconnect the Camshaft Position (CMP) sensor electrical connector.
  4.  
  5. Remove the CMP sensor bolt.
  6.  
  7. Remove the CMP sensor.
  8.  
  9. Inspect the CMP sensor O-rings for wear, cracks, or leakage if the sensor is being reused. Replace the O-rings if damaged.
  10.  

To install:

  1. Lubricate the O-ring with clean engine oil and replace if damaged.
  2.  
  3. Install the CMP sensor.
  4.  
  5. Tighten the retaining bolt to 89 inch lbs. (10 Nm).
  6.  
  7. Connect the sensor electrical connector.
  8.  
  9. Install the power steering pump.,
  10.  

 
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