General System Description

Computer And Emission Control Circuit Diagram:

Computer And Emission Control System Input And Outputs Chart:

DESCRIPTION
The term used by Infiniti to identify the computerized engine control system is Electronic Concentrated Engine Control System. (ECCS) This system is comprised of an Engine Control Module (ECM) or central processor, several sensors or input devices and actuators or output devices. All components and circuits work in conjunction with each other to control emissions and maintain fuel economy and performance at optimum levels.


ECCS Sub-Systems
The ECCS system is broken down into the following sub-systems*:

- Acceleration Cut Control System (ACC)
- Air Regulator Control System
- Cooling Fan Control System
- Electronic Ignition Control
- Fail-Safe System
- Fuel Injection Control System
- Fuel Pump Control System
- Idle Speed Control System
- On-Board Diagnostic (OBD) System
- Valve Timing Control (VTC) System

*Sub-systems are described in following articles.