Engine Petrol Engines
• The CKP sensor consists of an IC (Integrated Circuit) with a GMR (Giant Magneto
Resistive) element and an integrated signal processing circuit, and a magnet. Signal
reliability has been improved with the adoption of the GMR element resulting in the
signal amplitude being wider compared to the Hall element.
• Signal detection uses the special characteristics of GMR to change the electrical
resistance corresponding to the magnetic field.
• The size of the magnetic field detected by the GMR element is changed into square
waves at the signal processing circuit, and then sent to the PCM.
NOTE: If the crankshaft position sensor is removed/installed or replaced, magnetized
objects such as metal shavings adhering to the sensor could cause fluctuation in the
magnetic flux, causing abnormal sensor output which could adversely affect engine
control.
M6FL_01024
1 Large gaps 7 PCM
2 Rotation 8 CPU (Central Processing Unit)
3 CKP sensor 9 CKP output signal
4 Pulse wheel 10 16 tooth
5 From main relay 11 13 tooth
6 CKP output signal
Service Training Mazda6 Facelift 01-27
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