System Description

This system includes the crankshaft position (CKP) sensor, the camshaft position (CMP) sensor, the ignition coil with the ignition control module (ICM), the secondary wires, the spark plugs, and the circuit conductors and connectors.

The powertrain control module (PCM) controls the ignition system. The PCM monitors the input signals from various engine sensors. The PCM controls the dwell of the ignition primary coil, computes the desired spark timing and firing of the ignition system via an ignition control (IC) timing control circuit to the ignition control module.

The distributor ignition (DI) system diagnostic table assumes the following conditions:

• The battery is fully charged.
• There is adequate fuel in the fuel tank.
• The fuel delivery system is functional.