Efitccs System

With the introduction of the Toyota Computer Control System (TCCS), the EFI system went from a simple fuel control system to a fully integrated engine and emissions management system. Although the fuel delivery system operates the same as Conventional EFI, the

TCCS Electronic Control Unit (ECU) also controls ignition spark angle. Additionally, TCCS also regulates an Idle Speed Control device, an Exhaust Gas Recirculation (EGR) Vacuum Switching Valve and, depending on application, other engine related systems.

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