Electronic Concentrated Control System (ECCS)

The Electronic Concentrated Control System (ECCS) is a computerized emission, ignition, and fuel control system. A single Engine Control Module (PCM) uses input voltage signals received from various input components to control output.

PCM compares each input signal to appropriate parameter preprogrammed in PCM and adjusts output voltage signals accordingly. This allows optimum vehicle performance under various conditions. On most models voltage to PCM is supplied by ECCS relay. ECCS relay has a self shut-off feature that cuts power to PCM a few seconds after ignition is turned off.