Signal Waveform & Data

Fig 1: Scantool Display - Signal Waveform Of CKPS & CMPS

Courtesy of KIA MOTORS AMERICA, INC.

Fig 2: Scantool Display - Signal Waveform Of Typical Crankshaft Position Sensor & Camshaft Position Sensor

Courtesy of KIA MOTORS AMERICA, INC.

This example shows a typical Crankshaft Position Sensor (CKPS) and Camshaft Position Sensor (CMPS) waveform at idle. The ECM controls the injection and ignition timing by using these signals. Generally CKPS signal is used to detect the piston's position and CMPS signal is used to detect the Top Dead Center of each cylinder.