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CRANKSHAFT POSITION (CKP) SENSOR INSPECTION [SKYACTIV-D 1.8]

CRANKSHAFT POSITION (CKP) SENSOR INSPECTION [SKYACTIV-D 1.8]

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Visual Inspection

Caution
•  When foreign material such as an iron chip is on the CKP sensor, it can cause abnormal output from the sensor because of flux turbulence and adversely affect the engine control. Be sure there is no foreign material on the CKP sensor when replacing.

1.  Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION [(E)].)

2.  Remove the CKP sensor. (See CRANKSHAFT POSITION (CKP) SENSOR REMOVAL/INSTALLATION [SKYACTIV-D 1.8].)

3.  Verify that there are no metal shavings on the CKP sensor.

•  If there is a malfunction, remove any metal shavings that are adhering.


Voltage Inspection

Caution
•  When foreign material such as an iron chip is on the CKP sensor, it can cause abnormal output from the sensor because of flux turbulence and adversely affect the engine control. Be sure there is no foreign material on the CKP sensor when replacing.
•  If the wiring harnesses or waterproof connectors are damaged, water penetrating the connector will cause a sensor malfunction. To prevent this, be careful not to damage wiring harnesses or waterproof connectors.

1.  Idle the engine.

2.  Measure the output voltage wave pattern between CKP sensor terminals C and B using an oscilloscope.

•  If not as specified, replace the CKP sensor. (See CRANKSHAFT POSITION (CKP) SENSOR REMOVAL/INSTALLATION [SKYACTIV-D 1.8].)

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•  Specification
4.5 V or more (Maximum value of wave pattern)
0.8 V or less (Minimum value of wave pattern)

Wave pattern (reference)

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Oscilloscope setting
•  5 V/DIV (Y), 1 ms/DIV (X), DC range
Vehicle condition
•  Idle after warm up