Note: The following information is general. Always verify with your specific Toyota Wiring Diagram Manual (EWD). Key 2UZ-FE ECU Wiring Groups
High-amperage power grounds connecting directly to the engine block or chassis frame.
: Intake Air Temperature signal, typically housed within the Mass Air Flow (MAF) meter.
Ignition switch signal that tells the ECU to wake up when the key is turned to "ON".