Toyota 4A-FE ECU pinout is a critical technical resource for maintaining or modifying the engine management system of vehicles like the Toyota Corolla. Because the 4A-FE engine was produced for many years, pinouts vary significantly based on the specific model year and region. Key Technical Specifications Connector Configurations
| Pin | Signal | Description | |------|--------|--------------| | B1 | VTA | Throttle position sensor (TPS) signal | | B2 | VC | 5V sensor supply (TPS, MAP) | | B3 | E2 | Sensor ground | | B4 | VCC | 5V reference (MAP) | | B5 | PIM | MAP sensor signal | | B6 | THW | Coolant temp sensor signal | | B7 | THA | Intake air temp signal | | B8 | STA | Starter signal | | B9 | NSW | Neutral start switch (auto) / clutch (manual) | | B10 | SPD | Vehicle speed sensor signal | | B11 | G2 | Distributor G2 (cam position) | | B12 | G1 | Distributor G1 (cam position) | | B13 | NE+ | Distributor NE (crank position) positive | | B14 | NE- | Distributor NE negative | | B15 | IGF | Ignition confirmation signal (to ECU from igniter) | | B16 | IGT | Ignition timing signal (ECU to igniter) | toyota 4afe ecu pinout