Toyota Computer Control System (TCCS)

The Toyota Computer Control System (TCCS) is the central control for electronic fuel injection (EFI), electronic spark advance (ESA), idle speed control(ISC), exhaust gas recirculation (EGR), and air suction system (AS). This is done by monitoring engine operating conditions like the intake air volume, intake air temperature., coolant temperature., engine rpm, and exhaust oxygen content. The TCCS also has a diagnosis function that helps find malfunctions or abnormalities in the system.