FixVault
Home › GMC › 1994 › Forward Control 7.4 N › Repair and Diagnosis › Engine Performance › System › Engine Controls - System/Component Tests - Gasoline › Ignition System › Timing Control Systems (C-4 & C-5) › C-4, Ignition Control Circuit

C-4, Ignition Control Circuit

An open or short to ground in Ignition Control (IC) or by-pass circuit will cause ECM to turn on Malfunction Indicator Light (MIL) and confirm fault by setting a related trouble code. Refer to appropriate G - GASOLINE TESTS W/ CODES article in the ENGINE PERFORMANCE section below.

About FixVault