Component Tests and General Diagnostics

CRANKSHAFT POSITION SENSOR (CKP) SYSTEM DIAGNOSIS

CIRCUIT DESCRIPTION
The crankshaft position (CKP) sensor indicates the crankshaft speed and position. The CKP sensor produces an AC voltage of different frequency and amplitude. 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
- The low reference

TEST DESCRIPTION

Steps 1-9:

Steps 10-13:

The number below refers to the step number on the diagnostic table.
3. This step determines an intermittent internally in the crankshaft position sensor.