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Home >> Pontiac >> 1997 >> Firebird Formula, 2D Convertible, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System & Engine Component Tests - 5.7L >> Ignition System >> Timing Control Systems >> Ignition Control (IC) Timing Advance System

Ignition Control (IC) Timing Advance System

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A malfunction in the IC circuit (formerly referred to as the EST circuit) will cause PCM to turn on Malfunction Indicator Light (MIL) and confirm fault by setting a related diagnostic trouble code. Refer to the TESTS W/CODES - 5.7L article.

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