Crankshaft Position Sensors

Crankshaft Position Sensors
  • Overview

NTK position sensors play vital roles in the function of vehicles, communicating the position of various components to the computer for safe, efficient driving.

Engine Crankshaft Position Sensors report crankshaft rotation timing and speed, a vital component of ignition system and vehicle computer communication.

Purpose

The engine crankshaft sensor determines the exact position and speed of the crankshaft to ensure proper timing of fuel injection and ignition as well as misfire monitoring

Function

NTK crankshaft position sensors are available in either analog (inductive principle) or digital (hall effect) technologies. The two technologies are not interchangeable.

  • Analogue (Inductive) Sensor
    • Generates a signal, no external power supply
    • Wave-form output signal
    • Only signal when crankshaft turns
    • Voltage rises with crankshaft speed, and depends on distance to crankshaft (“G“)
    • 2 or 3 Pins (3rd for shield)

Digital (Hall Effect) Sensor

  • Integrated electronics
  • External power supply of 5V
  • Square output signal (0V/5V)
  • Can detect a position even if the crankshaft is at a standstill
  • 3 Pins

Position

Located in the engine block, in or on the timing cover, near the harmonic balancer or flywheel

Cause for replacement

  • Check engine lamp illumination
  • No start
  • Hard start/extended cranking time
  • Failed emissions test
  • Engine misfire
  • Engine stalling

Anatomy and Construction

NTK camshaft position sensors are available in either analog (inductive principle) or digital (hall effect) technologies

  • Analogue (Inductive) Sensor

  • Digital (Hall Effect) Sensor

The NTK Difference

  • More robust circuit board design to increase durability
  • Precision-wound, coated-copper windings to increase longevity
  • Magnet size and strength optimized for precise signal output
  • Robotically soldered circuit board connections to increase reliability
  • 100% thermo-shock and vibration tested to ensure the best performance in extreme conditions