Ignition System

The 2.2L turbocharged engine uses an Electronic Spark Control (ESC) system incorporating the Hall Effect. The ESC system is used to control engine detonation by automatically retarding the timing during periods when detonation occurs.

The 3 major components of system are ECM, ESC sensor, and distributor. The ECM processes detonation information from the ESC sensor and sends a signal to a special ESC module. The ECM signal delays or advances spark timing in reference to basic timing; therefore, setting of base timing is critical.