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 TESTS W/CODES article in the ENGINE PERFORMANCE section below.
- G - TESTS W/CODES - 2.2L (S10 Pickup)
- G - TESTS W/CODES - 4.3L (Except S10 Pickup)