Honda CRV/Odyssey 1995-2000 Repair Information

Crankshaft Speed Fluctuation Sensor

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The Odyssey models do not use a Crankshaft Speed Fluctuation (CKF) sensor. The Odyssey models use a Crankshaft Position (CYP) Sensor to monitor crankshaft engine speed fluctuation.

OPERATION



The Crankshaft Speed Fluctuation (CKF) Sensor is used by the PCM to monitor crankshaft speed fluctuation. The diagnostic system is composed of a pulser rotor mounted on the crankshaft, and a pulse pick-up sensor on the engine block. The PCM monitors the crankshaft speed fluctuations based on the CKF signal and determines if an engine misfire has occurred if the crankshaft speed fluctuates beyond a predetermined limit.

TESTING



  1. With the ignition switch OFF , disconnect the Crankshaft Fluctuation (CKF) sensor connector.
  2.  
  3. Measure the resistance between the two terminals.
  4.  
  5. The resistance should measure 1.6-3.2 k ohms.
  6.  
  7. If the resistance is not within the specified range, replace the sensor.
  8.  

REMOVAL & INSTALLATION



The sensor is located underneath the lower timing belt cover behind the crankshaft pulley.

  1. Remove the negative battery cable.
  2.  
  3. Raise and safely support the vehicle.
  4.  
  5. Remove the engine splash shield.
  6.  
  7. Remove the power steering, alternator and air conditioner belts. For details, refer to General Information and Maintenance .
  8.  
  9. Remove the crankshaft pulley and lower timing belt cover. For details, refer to the timing belt removal procedures in Engine and Engine Overhaul .
  10.  
  11. Disconnect the CKF sensor electrical connector near the alternator. Remove the sensor mounting bolts and remove the sensor.
  12.  
  13. Install in the reverse order of removal.
  14.  

See Figure 1

Click image to see an enlarged view

Fig. Fig. 1: The CKF Sensor is located under the timing belt cover, behind the crankshaft pulley and uses the large cogged wheel to monitor crankshaft speed

 
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