The ignition control module is a crucial component of a vehicle's ignition system. It is a control unit responsible for regulating the ignition timing and generating sparks to ignite the fuel-air ...

If both wires are functional but the coil fails to produce spark, the ignition coil or the ignition control module is bad. Check both and replace as necessary.

Typically, when an ignition control module of this type fails it would be one of the three drivers (transistors) within it that controls a specific ignition coil giving up.

The engine control module, or ECM, controls plenty of functions during routine driving, so any issues with that part could cause severe problems.