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Crankshaft Position Sensor (CKP) System Diagnosis



CRANKSHAFT POSITION SENSOR (CKP) SYSTEM DIAGNOSIS

CIRCUIT DESCRIPTION
The crankshaft position (CKP) sensor is a variable reluctance sensor. The CKP sensor indicates the crankshaft speed and position. The CKP sensor produces an AC voltage of different amplitude and frequency. The frequency depends on the velocity of the crankshaft. The AC voltage output depends on the crankshaft position and the battery voltage. The CKP sensor works in conjunction with a 7X reluctor wheel attached to the crankshaft. The CKP sensor connects to the engine control module (ECM) through the following circuits:
- The CKP sensor signal circuit
- The low reference circuit

TEST

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