General System Description

Circuit Diagram:

Input/output Signal Line:

PURPOSE
The Electronic Concentrated Engine Control System (ECCS) is used to provide precise control of the air-fuel ratio and ignition functions. By doing so, maximum performance, fuel economy and low emissions can be achieved.

OPERATION
The Electronic Concentrated Engine Control System (ECCS) consists of sensors which detect the engine condition, the ECCS Control Module (ECM) which controls the engine on the basis of the sensor signals, and actuators which operate under control of the ECM. The ECM controls the Fuel Injection, Idle Control, Ignition Timing, Engine Cooling Fan, Exhaust Gas Recirculation, Evaporative Canister, Variable Valve Timing, and Fuel Pump Systems. In addition, the ECM is provided with 2 diagnostic test modes (DTM) to facilitate troubleshooting in case of failure.
In the event of a component or circuit failure of certain sensors or actuators, the ECM is programed with a Fail-Safe feature. This will allow the vehicle to be driven in a limited capacity.