Signals the Circuit Opening Relay to activate the fuel pump when cranking or running. Sensor Input Terminals Terminal Label Description Wiring Function MAP or MAF Sensor Input
If your MAP, TPS, and Temperature sensors all stop working or throw codes at the same time, check the pin.
Set your voltmeter to DC volts. Probe the +B pin relative to the E1 ground pin with the ignition key turned to ON. You should read 12V. If you read 0V, inspect the EFI fuse and EFI relay. 3s-fe ecu pinout pdf
If you are still struggling to find your specific PDF, post on the Toyota Nation "Camry" or "Celica" forums with your car’s year, model, and ECU number. The community has been archiving these 3S-FE documents for over 20 years. Good luck, and keep that 2.0L DOHC purring.
Heavy-duty grounds for the fuel injector drivers. 2. Ignition System Signals Signals the Circuit Opening Relay to activate the
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This comprehensive guide breaks down the Toyota 3S-FE ECU pinout, explains key sensor connections, and provides direction on finding official factory service manual (FSM) PDFs. Understanding the 3S-FE ECU Generations Probe the +B pin relative to the E1
Used in sequential injection setups on late-generation 3S-FE engines. Fuel Pump Control