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Component Tests and General Diagnostics



CRANKSHAFT POSITION SENSOR (CKP) SYSTEM DIAGNOSIS

CIRCUIT DESCRIPTION
The crankshaft position (CKP) sensor B is a 7X variable reluctance sensor. This produces 7 digital ON/OFF pulses per engine revolution. These pulses occur when a reluctor wheel, mounted to the crankshaft and containing 6 slots evenly spaced 60 degrees apart and one slot spaced at 10 degrees, passes by the sensor. The 7X sensor is connected directly to the ignition control module (ICM). The sensor wiring includes 2 circuits, a CKP senor signal circuit, and a low reference circuit. The ICM uses the 7X signal to determine the engine position and speed. There are no DTCs to diagnose the CKP sensor B. This CKP sensor system diagnosis is used to diagnose a fault with the CKP sensor B and the CKP sensor B circuits.

TEST

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Steps 11-16:




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