How does the ICM activate the ignition coil?
How does the ICM activate the ignition coil? The ICM activates the ignition coil to start sparking by turning on and off (interrupting) the Ground circuit. You and I can check the ignition coil by checking that it's getting power and that the ICM is supplying the ignition coil's activation signal. How does the ignition coil on a Chevy S10 work? Fuel pump is working. How Does The Ignition Coil Work? Even though the ignition coil on the 2.8 v6 Chevy S10 has four wires coming out of its connector, it's a component that works on 12 Volts and ground....