CRANKSHAFT POSITION (CKP) SENSOR INSPECTION [SKYACTIV-G 2.0, SKYACTIV-G 2.5]

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Visual Inspection

Caution

• If foreign matter such as metal shavings adhere to the CKP sensor, it can cause abnormal output from the sensor because of flux turbulence, which can negatively affect the engine control. Verify that there is no foreign matter on the CKP sensor when replacing.

1. Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.0, SKYACTIV-G 2.5].) (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.0, SKYACTIV-G 2.5 (WITHOUT i-stop)].)

2. Lift up the vehicle.

3. Perform the following procedure for easier access.

(1) Remove the service hole cover (installed to front under cover No.2) used to remove the oil filter. (See OIL FILTER REPLACEMENT [SKYACTIV-G 2.0, SKYACTIV-G 2.5].)

(2) Remove the front splash shield. (See SPLASH SHIELD REMOVAL/INSTALLATION.)

4. Disconnect the CKP sensor connector.

5. Remove the CKP sensor. (See CRANKSHAFT POSITION (CKP) SENSOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0, SKYACTIV-G 2.5].)

6. Verify that there are no metal shavings on the sensor.

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

Voltage Inspection

Caution

• 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 CKP sensor output voltage wave pattern using an oscilloscope.

• If not as specified, replace the CKP sensor. (See CRANKSHAFT POSITION (CKP) SENSOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0, SKYACTIV-G 2.5].)

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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

• 2 V/DIV (Y), 1 ms/DIV (X), DC range

Vehicle condition

• Idle (after warm up)