Signal Waveform & Data

Fig 1: Screen Display - Normal Waveform Of ECTS At 77°C (171.1°F)

Courtesy of KIA MOTORS AMERICA, INC.

Fig 2: Screen Display - Normal Data Of IATS & ECTS & EOTS At IG ON

Courtesy of KIA MOTORS AMERICA, INC.

Fig 3: Screen Display - Normal Data Of IATS & ECTS & EOTS Engine At Operating Temperature

Courtesy of KIA MOTORS AMERICA, INC.

The output signals of IATS & ECTS change smoothly without any rapid changes. These 2 sensors have almost the same characteristic signal during the early period after starting. It means that the temperatures of intake air and engine coolant are depended on the temperature of atmosphere. During engine warm up the output signal of the ECT will change quicker than the IAT signal.