CRANKSHAFT POSITION (CKP) SENSOR INSPECTION [MZR 1.3, MZR 1.5]

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Visual Inspection

1.  Disconnect the negative battery cable. (See BATTERY REMOVAL/INSTALLATION [MZR 1.3, MZR 1.5].)

2.  Remove the following parts for easier access:

(1)  Splash shield (See SPLASH SHIELD REMOVAL/INSTALLATION.)

(2)  Drive belt (See DRIVE BELT REMOVAL/INSTALLATION [MZR 1.3, MZR 1.5].)

3.  Disconnect the CKP sensor connector.

4.  Remove the CKP sensor. (See CRANKSHAFT POSITION (CKP) SENSOR REMOVAL/INSTALLATION [MZR 1.3, MZR 1.5].)

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

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

Air Gap Inspection

1.  Verify that the CKP sensor is securely installed.

2.  Using a thickness gauge, measure the air gap between the plate projections at the back of crankshaft pulley and the CKP sensor.

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•  If not within the specification, inspect the plate projections for cracks or bending.

―  If not within the specification, replace the crankshaft pulley. (See FRONT OIL SEAL REPLACEMENT [MZR 1.3, MZR 1.5].)

Voltage Inspection

Caution

•  Water penetrating the connector will cause sensor malfunction. To prevent this, be careful not to damage the wiring harnesses or the waterproof connector so as to cause water penetration.

1.  Idle the engine.

2.  Measure the crankshaft position signal and verify that rectangular waves are produced. (See PCM INSPECTION [MZR 1.3, MZR 1.5].)

•  If not as specified, replace the CKP sensor. (See CRANKSHAFT POSITION (CKP) SENSOR REMOVAL/INSTALLATION [MZR 1.3, MZR 1.5].)