Six ignition coils, one for each cylinder.
The 2012 Honda Pilot uses a coil-on-plug ignition system on its 3.5-liter V6 engine, meaning every spark plug has its own ignition coil. This setup results in a total of six ignition coils in the engine bay, providing individual ignition control for each cylinder and simplifying diagnostics.
Engine and ignition overview
Understanding how the ignition system is arranged helps explain why there are six coils and how they relate to the engine’s cylinders.
Coil-on-plug configuration and cylinder mapping
Here is a quick map of the ignition coils to the engine’s six cylinders. The following list assigns each coil to its corresponding cylinder, reflecting the typical COP layout used on the 2012 Pilot’s 3.5L V6.
- Coil 1 — Cylinder 1
- Coil 2 — Cylinder 2
- Coil 3 — Cylinder 3
- Coil 4 — Cylinder 4
- Coil 5 — Cylinder 5
- Coil 6 — Cylinder 6
With six individual coils, each spark plug can fire independently, which aids in precise ignition timing and simplifies diagnosing misfires in any cylinder.
Maintenance considerations
When diagnosing ignition issues or performing maintenance, technicians often test or replace only the coil associated with the faulty cylinder. Coil-on-plug coils are commonly replaced as needed, sometimes in conjunction with spark plugs to maintain optimal ignition performance.
Summary
In summary, the 2012 Honda Pilot with the 3.5L V6 engine has six ignition coils—one coil per cylinder using a coil-on-plug arrangement.