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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 there is any malfunction, replace the crankshaft pulley. (See FRONT OIL SEAL REPLACEMENT [L3 Turbo].)

Visual Inspection

1.Disconnect the negative battery cable.

2.Remove the CKP sensor. (See CRANKSHAFT POSITION (CKP) SENSOR REMOVAL/INSTALLATION [L3 Turbo].)

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

• Remove any metal shavings that are adhering.

Voltage Inspection

1.Idle the engine.

2.Measure the CKP sensor output wave pattern using an oscilloscope. (See PCM INSPECTION [L3 Turbo])

• If not within the specification, replace the CKP sensor. (See CRANKSHAFT POSITION (CKP) SENSOR REMOVAL/INSTALLATION [L3 Turbo].)