Dis (3.0L)

The 3.0L V6 is equipped with a distributorless ignition system. In this system, a pair of cylinders share one coil in the following arrangement: 1-4, 2-5 and 3-6. Each coil is connected to the spark plugs on companion cylinders. When appropriate ignition coil is fired, both companion cylinders are at TDC, one on the compression stroke, the other on the exhaust stroke.

The cylinder on the exhaust stroke requires little voltage to trigger the spark plug. This allows the balance of the voltage to trigger the spark plug on the compression stroke. This is referred to as the "waste spark" method.

The 3.0L DIS does not use an ignition module. The ignition coil is powered by an ignition feed circuit. The control circuits for each of the 3 ignition coils go directly to the ECM, which controls ignition coil triggering (sequence and timing).