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The legendary MR2 Turbo ECU 89661-17320 (SW20 chassis) is a common platform for enthusiasts. Here is a simplified but direct pinout listing for the 3S-GTE ECU. toyota 89661 ecu pinout
This guide provides a comprehensive breakdown of how to identify, read, and use Toyota 89661 ECU pinouts for engine swaps, diagnostic probing, or piggyback installations. 1. Understanding the 89661 Part Number System This public link is valid for 7 days
These ECUs typically feature 26-pin, 16-pin, and 22-pin yellow or grey connectors. The pin layout is usually embossed directly onto the internal green circuit board. If you open the metal casing, you will often find the acronyms (like +B , E1 , #10 ) printed right next to the solder joints of the header pins. Can’t copy the link right now
Do you have 12V at the ECU with the key off? If not, your ECU won't remember timing trims or fault codes.