1kz Ecu Pinout ((hot)) Official

These are calibration resistors inside the pump wiring. They tell the ECU the specific tolerances of that individual injection pump.

The 1KZ-TE ECU is robust, but the wiring harnesses are now aging. Most issues stem from broken wires at the injectors, corroded ground pins (14/15), or battery voltage leaks at Pin 16. If you are performing a conversion, identifying the presence of an immobilizer system is your first and most critical step. Always cross-reference the specific part number on your ECU case (e.g., 89661-xxxxx) with the Toyota factory wiring diagram for your specific chassis code. 1kz ecu pinout

Constant 12V from the battery (for fault code memory). These are calibration resistors inside the pump wiring

These are your main switched 12V power sources, usually coming from the EFI main relay. Most issues stem from broken wires at the

Often found in the KZN130 Surf, using a 26p-16p-22p plug configuration.