Crankshaft Position Sensor: Description and Operation

Location

Mounted in transmission housing, below the throttle body.

Purpose

The Control Module uses input to determine basic timing and injector sequence.

Operation

Timing Slots:

Sensor reads a series of slots cut in transmission driveplate.

Note: It may take one complete engine revolution for PCM to determine crankshaft position.

Note: Base ignition timing is not adjustable.

Note: The distance between the sensor and torque converter drive plate is critical to system operation. Be sure paper spacer is attached to sensor face when installing sensor. SEE Powertrain Management/Computers and Control Systems/Camshaft Position Sensor/Service and Repair.