Signal Waveform & Data

Fig 1: Normal Waveform Of MAPS & TPS With Acceleration

Courtesy of HYUNDAI MOTOR CO.

Fig 2: Normal Data Of MAPS At Idle

Courtesy of HYUNDAI MOTOR CO.

It is necessary that MAPS should be checked along with TPS. Because the MAP/TPS rationality diagnostic is comprised of two tests. A deceleration test is performed to provide a robust method for detection of an altitude compensated MAP value that is too high for the deceleration condition. The second test compares the altitude compensated MAP value to both high and low limits, dependent upon throttle position and engine speed. When the MAP value is out of the threshold range, the MAP/TPS system is determined to be failed.