Signal Waveform

Fig 1: Signal Waveform

Courtesy of HYUNDAI MOTOR CO.

As often as possible, the MAFS signal should be compared with the TPS signal. Check whether the MAFS and TPS signals increase at the same time when accelerating. During acceleration, the MAFS output voltage increases; during deceleration, the MAFS output voltage decreases. The left illustration is a signal waveform at idle and the right illustration is during acceleration and deceleration.