Vision V6-215 3.5L SOHC (1995)
Crankshaft Position Sensor: Description and Operation
Crankshaft Timing Slots
PURPOSE
The signal from the Crankshaft Position (CKP) Sensor is used to determine crankshaft angle, engine speed, and basic timing.
Powertrain Control Module (PCM) also uses the signal from the Crankshaft Position (CKP) Sensor combined with the input signal from the
camshaft position sensor to properly synchronize injection.
OPERATION
The crankshaft position sensor is a hall effect switch that detect slots transmission drive plate.
The notches cause a pulse to be generated when they pass under the sensor. The pulses are input to the PCM. For each engine revolution there are
3 groups of 4 pulses generated.
The trailing edge of the fourth slot is used to determine basic timing.
If PCM does not sense input from the crankshaft position sensor, PCM will deactivate ASD and fuel pump relay, interrupting voltage to fuel
pump, fuel injectors, and ignition coil, (no start condition).
CIRCUIT OPERATION
Both engine packages in this vehicle use a Crankshaft Position Sensor.
Circuit K7 supplies 8 Volts from the Powertrain Control Module (PCM) to the crankshaft position sensor. the K7 circuit connects to cavity 7 of
the PCM.
Circuit K24 from the sensor provides an input signal to the PCM. the K24 circuit connects to cavity 24 of the PCM. This circuit is spliced and
provides an input to the Transmission Control Module (TCM).
The PCM provides a ground for the crankshaft position sensor signal (circuit K24) through circuit K4. Circuit K4 connects to cavity 4 of the PCM
connector.
