The wiring harness runs directly over the injection pump. The constant vibration and heat cause the insulation to crack on the SCV wires (A3 and A22). Inspect this section carefully.
If you own a Toyota Land Cruiser Prado (J78, J90, J95), a Toyota Hilux Surf, or a Granvia/Regius with the legendary engine, you have likely found yourself staring at a bundle of wires leading to the Engine Control Unit (ECU). Whether you are troubleshooting a no-start condition, building a stand-alone wiring harness for an engine swap, or chasing an intermittent sensor fault, understanding the 1KZ ECU pinout is not just helpful—it’s essential. 1kz ecu pinout
If the ECT (Coolant Temp) or PIM (Boost) sensors are disconnected, the ECU will pull timing and fuel to protect the engine, resulting in a massive loss of power. Tips for Engine Swaps When wiring a 1KZ-TE into a different vehicle: The wiring harness runs directly over the injection pump