Toyota Pick-ups, Land Cruiser, and 4 Runner 1997-00

Crankshaft Position Sensor

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OPERATION



The Crankshaft Position (CKP) sensor is essentially a pick-up coil and works in a similar manner to the Camshaft Position (CMP) sensor. While the crankshaft rotates, the air gap between the protrusion (tooth) on the timing rotor and the pick-up coil changes. This causes fluctuation in the magnetic field and generates a varying voltage signal in the pick-up coil. The CKP sensor is used by the ECM to determine crankshaft angle and speed, based upon the voltage received.

TESTING





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Fig. Crankshaft Position (CKP) sensor testing1FZ-FE engine shown, others similar

  1. Detach the Crankshaft Position (CKP) sensor connector.
  2.  
  3. Using an ohmmeter, measure the resistance between terminals.
  4.  
  5. On a cold engine, with the sensor temperature below 122° F (50° C), resistance should be 16302740 ohms.
  6.  
  7. On a hot engine, with the sensor temperature of 122212° F (50100° C), resistance should be 20653225 ohms.
  8.  
  9. If the resistance is not as specified, replace the CKP sensor.
  10.  

REMOVAL & INSTALLATION



1FZ-FE Engine


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Fig. Exploded view of the CKP sensor and related components1FZ-FE engine

  1. Remove the engine under cover.
  2.  
  3. Unbolt the sensor protector.
  4.  
  5. Disconnect the Crankshaft Position (CKP) sensor bracket and harness.
  6.  
  7. Remove the bolt, nuts and sensor.
  8.  

To install:

  1. Attach the sensor with the nuts and bolt. Tighten the bolt to 14 ft. lbs. (20 Nm) and the nuts to 78 inch lbs. (9 Nm).
  2.  
  3. Attach the bracket and harness.
  4.  
  5. Install the sensor protector; tighten the mounting bolts to 14 ft. lbs. (20 Nm).
  6.  
  7. Install the engine under cover.
  8.  

2RZ-FE and 3RZ-FE Engines


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Fig. Remove the alternator bracket to access the Crankshaft Position (CKP) sensor2RZ-FE engine

  1. Remove the engine under cover.
  2.  
  3. Remove the alternator assembly.
  4.  
  5. Remove the alternator bracket.
  6.  
  7. Detach the Crankshaft Position (CKP) sensor harness connector.
  8.  
  9. Remove the two sensor retaining bolts and remove the sensor.
  10.  
  11. Installation is the reverse of the removal process. Use a new O-ring, lightly coated with engine oil at installation. Tighten the retainer bolts to 74 inch lbs. (8.5 Nm).
  12.  

5VZ-FE Engine


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Fig. Crankshaft Position (CKP) sensor arrangement5VZ-FE engine

  1. Disconnect the Crankshaft Position (CKP) sensor harness.
  2.  
  3. Remove the bolt retaining the sensor to the vehicle.
  4.  
  5. Installation is the reverse of the removal process. Tighten the mounting bolt to 69 inch lbs. (8 Nm).
  6.  

2UZ-FE Engine


Click image to see an enlarged view

Fig. Exploded view of the CKP sensor2UZ-FE engine

  1. Remove the engine under cover.
  2.  
  3. Disconnect the Crankshaft Position (CKP) sensor harness.
  4.  
  5. Remove the bolt retaining the sensor to the oil pump body.
  6.  
  7. Installation is the reverse of the removal process. Tighten the mounting bolt to 58 inch lbs. (6.5 Nm).
  8.  

 
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