Signal Waveform & Data

Fig 1: Scantool Display - Normal Data Of IATS & ECTS & EOTS At Ig On

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Fig 2: Scantool Display - Normal Data Of IATS & ECTS & EOTS After Warming Up

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Fig 3: Scantool Display - Normal Waveform Of IATS

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The output signals of IATS & ECTS change smoothly without any rapid changes. These 2 sensor have almost the same characteristic signal during the early period after start. It means that the temperatures of intake air and engine coolant are depended on the temperature of atmosphere. Meanwhile, During engine warm up the output signal of the ECT will change quicker than the IAT signal. even it may not change almost.