California Models

ECCS System Diagram (All M/T Models And Calif. A/T):

SYSTEM OVERVIEW
The term used by Nissan to identify the Computerized Engine Control System is Electronic Concentrated Engine Control System (ECCS). The system is comprised of an Engine Control Unit/Module (ECM), sensors (input devices) and actuators (output devices). The ECCS system also has built-in Self-Diagnostics and a Fail-Safe system.

FAIL-SAFE OPERATION
The ECM will substitute an input signal in the event of a failure in the air flow meter, engine temperature sensor or throttle sensor circuits. The engine will operate at reduced capacity to allow the vehicle to be driven until repairs can be made.