Pontiac Firebird Ignition Control Module
About ignition control module
The ignition coil is a component that is used in the vehicle's ignition system to transmit enough voltage to ignite the spark plugs. This process is controlled using the module for the ignition power which is known as the Ignition Control Module. Usually the ignition control module can be located mounted on the engine and it comprises of several components that make up this package. Some of the components are heat-sensitive, and so are therefore covered around the internal circuitry in insulating material. A heat shield can also be placed between the engine and the ignition control module to keep it extra safe.
How ignition control module works?
The ignition module is working much like mechanical points. They are solid state switching machines, with components such as a transistor. This transistor enables current flow to be turned on and off through the primary winding of an ignition coil. However, the ignition coil needs some sort of external input to trigger, because it is not controlled mechanically.
Where is ignition control module located?
The Ignition Control Module (ICM) is located near the ignition coil in the distributor's housing.