CAMSHAFT POSITION (CMP) SENSOR INSPECTION [MZR-CD 2.2]

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Note

•  Perform the following test only when directed.

Visual Inspection

Caution

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

•  Do not forcefully pull the wiring harness of the CMP sensor. Doing so will break the harness.

1.  Disconnect the negative battery cable. (See BATTERY REMOVAL/INSTALLATION [MZR-CD 2.2].)

2.  Remove the engine cover. (See ENGINE COVER REMOVAL/INSTALLATION [MZR-CD 2.2].)

3.  Disconnect the CMP sensor connector.

4.  Remove the CMP sensor. (See CAMSHAFT POSITION (CMP) SENSOR REMOVAL/INSTALLATION [MZR-CD 2.2].)

5.  Verify that the CMP sensor and the pulsar are free of any metallic shavings or particles.

•  If any are found on the CMP sensor and the pulsar, clean them off.

Air Gap Inspection

1.  Verify that the CMP sensor is securely installed. (See CAMSHAFT POSITION (CMP) SENSOR REMOVAL/INSTALLATION [MZR-CD 2.2].)

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

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

―  If there is any malfunction, replace the camshaft. (See CYLINDER HEAD GASKET REPLACEMENT [MZR-CD 2.2].)

Voltage Inspection

Caution

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

•  Do not forcefully pull the wiring harness of the CMP sensor. Doing so will break the harness.

•  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 output voltage using a oscilloscope.

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•  If not within the specification, replace the CMP sensor. (See CAMSHAFT POSITION (CMP) SENSOR REMOVAL/INSTALLATION [MZR-CD 2.2].)