1kz Ecu Pinout

| ECU Pin | Connect To | Notes | | :--- | :--- | :--- | | | 12V (Main Relay Output) | Use a 30A relay triggered by ignition | | A2, A22, A6 | Engine Ground | Direct to chassis/block | | A11 | 12V (Constant Battery) | For ECU memory (fuse 10A) | | A12 | 12V (Ignition Switch) | Key-on power | | B12 | Starter Solenoid Signal | S wire from ignition switch | | B8, B9 | Crank Position Sensor | Leave wired to the 1KZ harness | | B18, B19 | Cam Position Sensor | Leave wired to the 1KZ harness | | C3 | Aftermarket Tachometer | You will need a pull-up resistor (1k ohm to 12V) |

The following table outlines key pins for the KZN130 1KZ-TE ECU, based on official terminal configurations. Function Description Constant battery power supply Ignition switch signal to wake the ECU Engine coolant temperature sensor signal Engine revolution (RPM) signal from the speed sensor Top Dead Center signal for crank position Spill Control Valve—controls fuel injection volume Timer Control Valve—manages injection timing Main ECU ground Critical Sensor & Actuator Signals 1kz ecu pinout

Because wire colors change between a 1994 Hilux Surf KZN130 and a 2002 Land Cruiser Prado KZN165, you must always verify pin positions by function rather than color. 1. Power Supply and Ground Circuit | ECU Pin | Connect To | Notes

ECU HEADER PINOUT (Looking into the metal ECU case pins) +------------------------+ +------------------+ | 1 2 3 4 5 6 7 8 | | 1 2 3 4 5 6 | | 9 10 11 12 13 14 15 16 | | 7 8 9 10 11 12 | +------------------------+ +------------------+ HARNESS PLUG PINOUT (Looking directly at the plastic wire face) +------------------------+ +------------------+ | 8 7 6 5 4 3 2 1 | | 6 5 4 3 2 1 | | 16 15 14 13 12 11 10 9 | | 12 11 10 9 8 7 | +------------------------+ +------------------+ Numbered from left to right. Power Supply and Ground Circuit ECU HEADER PINOUT