Intrepid V6-3.5L VIN K (2003)
Ignition Coil: Description and Operation
IGNITION COIL
Fig. 7 Ignition Coil - 2.7L
Fig. 8 Ignition Coil - 3.5L
The engines are equipped with a coil on plug ignition system. Each cylinder has a dedicated coil that sits atop each plug. No secondary wires are
required and connection from the coil to plug is made with a boot that is attached to the coil. The combination of the coil, boot, and fasteners is
known as the ignition coil assembly The Powertrain Control Module (PCM) determines which coil to charge and fire at the correct time.
The Auto Shutdown (ASD) relay provides battery voltage to the ignition coil. The PCM provides a ground contact (circuit) for energizing the coil.
When the PCM breaks the contact, the energy in the coil primary transfers to the secondary causing the spark. The PCM will de-energize the ASD
relay if it does not receive the crankshaft position sensor and camshaft position sensor inputs. For limp home capability, the engine can run on
crankshaft sensor input only Refer to Auto Shutdown (ASD) Relay-PCM Output, in this section for relay operation.
