Upd - 1kz Ecu Pinout

Starter signal input. Tells the ECU the engine is actively cranking so it can enrich the fuel mixture.

The 1KZ-TE uses electronic control for injection timing and duration. The ECU sends a voltage signal to the motor on the injection pump. 1kz ecu pinout

Constant 12V battery power (for ECU memory and clock). Starter signal input

If your 1KZ-TE cranks but refuses to start, or if it suffers from severe power loss, use your ECU pinout knowledge to diagnose the circuit with a digital multimeter (DMM). The "Crank, No Start" Scenario No Start" Scenario