2016 – MX-5 – Engine

CRANKSHAFT POSITION (CKP) SENSOR [SKYACTIV-G 2.0]

Purpose

• Detects the crankshaft position as basic information for mainly determining the fuel injection timing and ignition timing.

Function

• Detects the crankshaft position and sends it to the PCM as a crankshaft position signal.

  CKP sensor characteristic

  

• Determines the crankshaft angle based on the space between teeth of the signal detection plate.

Construction

• The CKP sensor is located on the side (right side) of the cylinder block.

  

• A magnetic resistance element has been adopted for the detection area of the CKP sensor.

• The magnetic resistance element detects the magnetic field which changes according to the distance from the magnetized object (signal detection plate) and outputs it as a voltage value.

  

Operation

1. The CKP sensor detects (1) the crankshaft position.

2. The CKP sensor sends (2) the detected crankshaft position to the PCM as a crankshaft position signal.

Fail-safe

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