System Description
WARNING: This page is about a different car, the 2004 Suzuki XL-7 and 2004 Suzuki Grand Vitara. However, it is still accessible from the selected car via links, so may be relevant.
CMP sensor detects REF signal and POS signal.
- REF signal: 4 pulses/1 revolution of camshaft. There are 2 different kinds of wavelength. Based on REF signal, ECM judges which cylinder is at TDC.
- POS signal: 6 pulse/1 revolution of camshaft. Each of POS signals has equivalent wavelength. Based on POS signal, ECM judges the wavelength of REF signals, engine speed and piston position.