Ignition Coil Module
WARNING: This page is about a different car, the 2015 Chevrolet Trax and 2015 Buick Encore. 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.