While specific pin locations change, the primary signals required to get the engine running remain consistent. These are typically spread across four main plugs (labeled A through D or E5 through E8): Description Common Terminals Constant 12V and Switched Ignition Power STA Starter Signal to tell the ECU the engine is cranking E1 / E01 Main Ground for the ECU and sensors E1, E01, E02 #10 - #40 Fuel Injector triggers (pulsed ground) #10, #20, #30, #40 IGT / IGF Ignition Trigger and Ignition Confirmation signals IGT1, IGT2, IGF NE+ / NE- Crankshaft Position Sensor (RPM signal) THW Engine Coolant Temperature (ECT) sensor VTA / VC Throttle Position Sensor (signal and 5V reference) Key Differences: Manual vs. Automatic
Usually a 12V constant from the battery to keep the ECU memory alive. Switched Ignition 3rz-fe ecu pinout diagram