Pinout: Toyota 89661 Ecu
The pinout configuration changes drastically based on the engine series and connector style. Common "89661" series include: 1UZ-FE (Lexus/Celsior V8): Often found in part numbers like 89661-50241 (1994–1997) or 89661-50102
Ignition feedback signal (if the ECU doesn't see this, it will cut fuel). #10, #20, #30: Injector pulse signals. Troubleshooting Tips for 89661 ECUs toyota 89661 ecu pinout







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