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Home >> Cadillac >> 1990 >> Allante F7/ME9 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> ECM DTC EO74: Mat Signal Interrupt >> Description
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ECM DTC EO74: Mat Signal Interrupt: Description

This diagnostic test monitors manifold air temperature for a rapid change of 7 degrees or more in temperature in a short period of time.

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