The ECU sends signals out through these pins to control the engine physically.
Enthusiasts often perform a "re-cap," replacing the old capacitors with modern, high-heat versions to bring the "brain" back to life. The DIY Swap: Modification & Diagnostics 4s-fe ecu pinout
Before you start probing wires, it is essential to identify which ECU version you have. While the 4S-FE was used for several years, the most common ECU found in aftermarket swaps and popular models (like the ST202 Celica or T190 Corona) usually utilizes the . The ECU sends signals out through these pins
Heavy-duty grounds for injector drivers. 4s-fe ecu pinout