Most 3S-FE ECUs use three main plugs, often labeled in Toyota documentation as , B , and C (or 1, 2, 3). Some later models use a 4-plug system.
: Throttle Position Sensor (TPS) output and idle switch. PIM : Manifold Absolute Pressure (MAP) sensor signal. 3s-fe ecu pinout pdf
For detailed schematics and terminal voltage values, you can find full documentation on platforms like Scribd's 3S-FE ECU Pinout for RAV4 or technical community guides on ToyotaNation Most 3S-FE ECUs use three main plugs, often
Before you download a PDF, you must identify which generation of the 3S-FE you have. The pinouts are interchangeable between all years. PIM : Manifold Absolute Pressure (MAP) sensor signal
Toyota maintains digital archives of every service manual. For a 24-hour subscription (~$15-20 USD), you can download the official wiring diagrams and ECU pinouts for your exact VIN. This guarantees 100% accuracy.
Houses the throttle position sensor (VTA) and power supply for altitude or manifold pressure sensors (VC).