Ignition Coil Module
WARNING: This page is about a different car, the 2019 Chevrolet Malibu. However, it is still accessible from the selected car via links, so may be relevant.
The ignition coil module integrates the 4 coils and the ignition control module within a single sealed component.
The ignition coil module has the following circuits:
- An ignition voltage circuit
- A ground
- A low reference circuit
- 4 ignition coil control circuits
The ECM controls the individual coils by transmitting timing pulses on the ignition coil control circuit to each ignition coil to enable a spark event.
The spark plugs are connected to each coil by a short boot. The boot contains a spring that conducts the spark energy from the coil to the spark plug. The spark plug electrode is coated with platinum for long wear and higher efficiency.