Ignition Coil

WARNING: This page is about a different car, the 2023 Jeep Grand Wagoneer. However, it is still accessible from the selected car via links, so may be relevant.

IGNITION COIL

Refer to COMPONENT INDEX .

Is used with each spark plug.
Is mounted over the top of the spark plug installed in a cavity of the cylinder head.
Consists of a:
- Coil assembly.
- Primary electrical connector.
- Secondary conductor.
- Spark plug boot.

The Auto Shutdown (ASD) relay provides battery voltage to the ignition coil.
The PCM provides a ground path with an internal Low Side Driver (LSD).
When the PCM opens the LSD, the ground path is broken and the energy in the coil primary.
The PCM will de-energize the ASD relay if it does not receive the crankshaft position sensor and camshaft position sensor inputs.