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Home >> Cadillac >> 1991 >> DeVille Touring >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes >> Pcm Flow Charts Codes E12 To E99 >> Pcm Code E74, Mat Sensor Signal Interrupt >> Description

Pcm Code E74, Mat Sensor Signal Interrupt: Description

This test monitors MAT signal for a rapid change of 7 degrees or more in temperature, in a short period of time.

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