Distributor Ignition (DI) System

The PCM controls all ignition system functions, and constantly corrects the basic spark timing. The PCM monitors information include the following:
- The throttle position (TP) sensor
- The engine coolant temperature (ECT) sensor
- The mass airflow (MAF) sensor
- The intake air temperature (IAT) sensor
- The vehicle speed sensor (VSS)
- The transmission gear position or range information sensors
- The engine knock sensors (KS)