CAMSHAFT POSITION (CMP) SENSOR INSPECTION [SKYACTIV-G 2.5T]

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Intake CMP Sensor

Visual inspection

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.

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

2.  Remove the plug hole plate. (See PLUG HOLE PLATE REMOVAL/INSTALLATION [SKYACTIV-G 2.5T].)

3.  Remove the intake manifold. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [SKYACTIV-G 2.5T].)

4.  Disconnect the intake CMP sensor connector.

5.  Remove the intake CMP sensor. (See CAMSHAFT POSITION (CMP) SENSOR REMOVAL/INSTALLATION [SKYACTIV-G 2.5T].)

6.  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

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.

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-G 2.5T].)

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Output voltage (Reference)

Terminal	Voltage (V)	Condition
A	Above 4.8	High output*
	Below 0.8	Low output*
B	Below 1.0	Under any condition
C	B+	Under any condition

*  :Output voltage varies with intake camshaft rotation.

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

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.

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

2.  Remove the plug hole plate. (See PLUG HOLE PLATE REMOVAL/INSTALLATION [SKYACTIV-G 2.5T].)

3.  Disconnect the exhaust CMP sensor connector.

4.  Remove the exhaust CMP sensor. (See CAMSHAFT POSITION (CMP) SENSOR REMOVAL/INSTALLATION [SKYACTIV-G 2.5T].)

5.  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

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.

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-G 2.5T].)

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Output voltage (Reference)

Terminal	Voltage (V)	Condition
A	Above 4.8	High output*
	Below 0.8	Low output*
B	Below 1.0	Under any condition
C	B+	Under any condition

*  :Output voltage varies with exhaust camshaft rotation.

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)