Check these ECU pins for 12V with ignition ON:
However, when these engines age or are swapped into other vehicles (like a Land Rover Defender or an older Toyota pickup), the Electronic Control Unit (ECU) becomes the central puzzle. Without a correct , you cannot diagnose a crank/no-start condition, rewire a standalone harness, or even test sensors with a multimeter. 1kz ecu pinout
pin triggers the EFI main relay to power the ECU once the ignition is turned The Spill Control Valve (SPV): Check these ECU pins for 12V with ignition