1kz Ecu: Pinout

The ECU has :

Important: Pin numbering is embossed on the connector housing. Look for a tiny “1” or “22” near the latch. Pin 1 is always top-left when the latch is facing you. 1kz ecu pinout

This is the heart of the fuel system. If the ECU doesn't send a signal to this pin, the engine will not start. It is often paired with a Spill Valve Relay (SVR) TDC and NE Signals: The ECU has : Important: Pin numbering is

This is a high-current output. The ECU switches this to ground to close the valve and begin injection. If this wire is broken, the engine will not start. 1kz ecu pinout

Check for 12V at the SPV relay and ensure the NE+ sensor has continuity.