1kz Ecu Pinout Jun 2026

Before testing, disconnect the battery and wait 60 seconds. The ECU capacitors can hold a charge. Always use a back-probing pin—never puncture wires.

Unlike modern common rails, the 1KZ-TE uses a separate Injection Driver Unit (often mounted near the ECU or under the passenger kick plate). You cannot just wire the ECU; you must wire the EDU as well. The ECU sends a signal to the EDU, which then drives the injectors. 1kz ecu pinout

Note: Please verify wire colors with your specific year model. Toyota sometimes changed wire colors between production years. Before testing, disconnect the battery and wait 60 seconds

: Spill Control Valve; the most critical output, as it controls the actual fuel injection volume. TCV (C-12) the most critical output