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CAMSHAFT POSITION (CMP) SENSOR INSPECTION [SKYACTIV-X 2.0]

CAMSHAFT POSITION (CMP) SENSOR INSPECTION [SKYACTIV-X 2.0]

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Caution
•  When replacing the CMP sensor, make sure there is no foreign matter on it such as metal shavings. If it is installed with foreign matter, the sensor output signal will malfunction resulting from fluctuation in magnetic flux and cause a deterioration in engine control.
•  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.

Intake CMP Sensor


Visual inspection

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

2.  Remove the intake CMP sensor. (See CAMSHAFT POSITION (CMP) SENSOR REMOVAL/INSTALLATION [SKYACTIV-X 2.0].)

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

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


Voltage inspection

1.  Idle the engine.

2.  Measure the output voltage wave pattern between intake CMP sensor terminals A and B using an oscilloscope.

•  If not as specified, replace the intake CMP sensor. (See CAMSHAFT POSITION (CMP) SENSOR REMOVAL/INSTALLATION [SKYACTIV-X 2.0].)
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•  Specification
4.8 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
•  2 V/DIV (Y), 20 ms/DIV (X), DC range
Vehicle condition
•  Idle (after warm up)


Exhaust CMP Sensor


Visual inspection

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

2.  Remove the exhaust CMP sensor. (See CAMSHAFT POSITION (CMP) SENSOR REMOVAL/INSTALLATION [SKYACTIV-X 2.0].)

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

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


Voltage inspection

1.  Idle the engine.

2.  Measure the output voltage wave pattern between exhaust CMP sensor terminals A and B using an oscilloscope.

•  If not as specified, replace the exhaust CMP sensor. (See CAMSHAFT POSITION (CMP) SENSOR REMOVAL/INSTALLATION [SKYACTIV-X 2.0].)
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•  Specification
4.8 V or more (Maximum value of wave pattern)
0.8 V or less (Minimum value of wave pattern)

Wave pattern (reference)

adejjw00007911
Oscilloscope setting
•  2 V/DIV (Y), 20 ms/DIV (X), DC range
Vehicle condition
•  Idle (after warm up)