Pacifica 2006-2008

Crankshaft Position Sensor

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Operation



This sensor generates pulses that are signals sent to the PCM. The PCM interprets these signals to determine the crankshaft position. The PCM uses this data along with other inputs to determine injector sequence and ignition timing.

Removal & Installation



  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Disconnect the negative and positive battery cable.
  4.  
  5. Remove the battery.
  6.  
  7. Unlock and disconnect electrical connector from crankshaft position sensor.
  8.  

To install:

  1. Install sensor and push sensor down until contact is made with the transmission case. While holding the sensor in this position, install and tighten the retaining bolt to 12 Nm (105 inch lbs.) torque.
  2.  
  3. Connect electrical connector and lock to crankshaft position sensor.
  4.  
  5. Install the battery and connect the positive cable, then the negative battery cable.

    Click image to see an enlarged view

    Fig. CKP sensor location-3.5L engine



    Click image to see an enlarged view

    Fig. CKP sensor location-3.8L engine (2006 Models)

  6.  

  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Disconnect the negative and positive battery cable.
  4.  
  5. Disconnect the electrical connector from the sensor.
  6.  
  7. Remove the sensor retaining bolt.
  8.  
  9. Remove the sensor from its mounting.
  10.  

To install:

  1. Installation is the reverse of the removal procedure.
  2.  
  3. Tighten the mounting bolt to 106 inch lbs.

    Click image to see an enlarged view

    Fig. CKP sensor location-3.8L engine (2007-08 Models)



    Click image to see an enlarged view

    Fig. CKP sensor location-4.0L engine

  4.  

Testing



  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Visually inspect the related wire harness. Look for any chafed, pierced, pinched, or partially broken wires.
  4.  
  5. Visually inspect the related wire harness connectors. Look for broken, bent, pushed out, or corroded terminals.
  6.  
  7. Ensure the Crankshaft Position Sensor and the Camshaft Position Sensor are properly installed and the mounting bolt(s) tight.
  8.  
  9. Remove the Camshaft Position Sensor and inspect the Tone Wheel/Pulse Ring for damage, foreign material, or excessive movement.
  10.  
  11. If no problems were evident, start the engine.
  12.  
  13. Gently tap on the Cam Position Sensor and wiggle the Sensor.
  14.  
  15. Inspect the Sensor harness connector, PCM harness connector, Sensor connector, and PCM connector for loose, bent, corroded, or pushed out pins or terminals.
  16.  
  17. Inspect the related wire harness and the splices in the CMP circuits.
  18.  
  19. Repair any wiring and/or connector concerns, or replace the Camshaft Position Sensor.
  20.  
  21. With the proper lab scope probe and the Miller special tool No. 6801, backprobe the CKP Signal circuit at the CKP harness connector.
  22.  
  23. Start the engine. Observe the lab scope screen. Are there any irregular or missing signals-
  24.  
  25. If so, determine the cause and repair or replace the item, or refer to any TSBs that may apply.
  26.  

 
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