(labeled A, B, C, and D) or a combined grip system with various pin counts like 26-pin, 16-pin, and 12-pin Core Wiring Categories Power & Ground : Constant battery power for memory. : Switched power from the EFI relay. E1/E01/E02 : Primary grounds for the ECU and power circuits. Ignition & Injection
Because the 2NZ-FE was produced over a long period (starting in the late 1990s), Toyota utilized several different ECU configurations. The most common units feature a multi-plug system (often categorized as 60-pin, 84-pin, or similar total pin counts split across 3 or 4 physical connectors). Key Sensors Managed by the ECU: Measures incoming air volume. 2nz fe ecu pinout pdf 186 portable