1kz: Ecu Pinout !!exclusive!!

If using an automatic ECU, this must be grounded or wired to your shifter, or the engine may refuse to rev or start.

Understanding the 1KZ-TE ECU Pinout: A Comprehensive Guide for Swaps and Troubleshooting 1kz ecu pinout

Tells the ECU the engine is cranking so it can provide extra fuel for startup. If using an automatic ECU, this must be