Spark Control System - Turbo: Description

Ignition timing is controlled by the ECCS control unit. Optimum timing for all engine conditions has been programmed into the ECCS control unit.

Signals used for determination of ignition timing come from the cylinder head temperature sensor, airflow sensor, throttle valve switch, vehicle speed sensor, detonation sensor, crank angle sensor, signal rotor plate and ignition coil. Signal from the ECCS control unit is sent to the power transistor of the ignition coil to control the ignition timing.