You need to connect to your vehicle’s harness:
Searching for the typically leads to technical diagrams for the 3.0L turbo diesel engine common in the Hilux and Prado. Depending on your specific model year and vehicle, the connector configuration (often 26-pin, 16-pin, and 22-pin) can vary. Common ECU Pin Functions 1kz ecu pinout
The following table details the primary pins found on the KZN130 1KZ-TE ECU , typically organized into three main connectors (A, B, and C). Terminal Name Function Description +BF Power supply (Fused) A-2 BATT Constant battery power for ECU memory A-7 +B Switched ignition power A-9 IGSW Ignition switch signal B-1 THF Fuel temperature sensor signal B-2 PIM Intake manifold pressure signal (Boost) B-4 THW Engine coolant temperature sensor B-11 VC 5V reference power for sensors C-4 / C-17 NE+ / NE- Engine speed (Revolution) signals C-5 / C-18 TDC+ / TDC- Top Dead Center (Crank position) signals C-8 M-REL Main relay control signal C-11 SPV Spill Control Valve (Controls fuel injection volume) C-12 TCV Timer Control Valve (Controls injection timing) C-24 E1 Engine ground Key Systems and Troubleshooting You need to connect to your vehicle’s harness:
If you are doing a swap and need to get the engine running on a standalone harness, these are the pins you need to focus on first. Terminal Name Function Description +BF Power supply (Fused)
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
| Abbr | Color | |------|-------| | B | Black | | W | White | | R | Red | | G | Green | | L | Blue | | Y | Yellow | | Br | Brown | | O | Orange | | P | Pink | | V | Violet | | - | Example: R-B = Red with Black stripe |
Found mostly on Automatic models.