Toyota 4afe Ecu Pinout ~upd~ -

Camshaft position signals (used for sequential injection timing). 3. Fuel and Air Sensors

A: Yes, for 1990-1997 Geo Prizms, the engine is identical. However, the body wiring (lights, HVAC) differs. The ECU pins for engine management are 100% compatible. toyota 4afe ecu pinout

– Especially pin A11 (G-) and A12 (IGt). The distributor signal wires become brittle near the ECU plug. However, the body wiring (lights, HVAC) differs

One of the 4A-FE’s clever features is its (FC or FPR pin). The ECU grounds this pin only when it sees a cranking or running RPM signal. This safety feature cuts power to the fuel pump if the engine stalls while the ignition is on—a critical detail that the pinout makes clear. Without knowing that FC pin is a ground-side switch, a novice might wrongly condemn a fuel pump. The distributor signal wires become brittle near the