1kz Ecu Pinout «CERTIFIED»

Toyota changed wire colors during production. Never trust color alone. Always verify continuity from the sensor back to the ECU plug. For example, "THW" (Coolant temp) might be Green/White on a KZN185, but Red/Blue on a KZN130.

Before you look at a pin diagram, you must know which ECU you have. Toyota used at least three distinct ECU configurations for the 1KZ-TE engine over its production run (approx. 1993–2006). 1kz ecu pinout

like a no-start or poor performance, or do you need the pinout for a custom engine swap Toyota changed wire colors during production

⚠️ Pinouts vary by and transmission (A/T vs M/T) . Always verify with your exact ECU part number (e.g., 89661-3A230). For example, "THW" (Coolant temp) might be Green/White

Many DIYers forget that the Spill Valve requires a dedicated relay. If the ECU doesn't see the "M-REL" signal to trigger the relay, the engine will crank but never start.

Understanding the is essential for engine swaps, troubleshooting, or installing performance chips like a Unichip . The 1KZ-TE is a 3.0L turbo diesel engine common in Toyota Hilux, Prado, and HiAce models. Technical Overview