1nz Ecu Pinout Diagram Jun 2026

The ignition feedback signal used by the ECU to confirm a spark occurred; if this signal is missing, the ECU will often cut fuel to prevent engine damage. 3. Sensor Inputs and Signal Processing

Most 1NZ-FE ECUs (typically those using 4-plug configurations like ) share standard terminal labels for critical engine functions: Terminal Symbol Pin Example Function Description Typical Voltage +B, +B2 E3-1, E3-2 Main power source from EFI relay 9–14 V (Ignition ON) BATT Constant battery power for ECU memory 9–14 V (Always) IGSW Ignition switch signal to ECU 9–14 V (Ignition ON) MREL EFI relay control signal 9–14 V (Ignition ON) E1 Main engine ground Below 1 V (Always) FC Fuel pump control signal 9–14 V (ON) / W Malfunction Indicator Lamp (MIL) / Check Engine Light 9–14 V (Idling) 2. Ignition and Fuel Injection 1nz ecu pinout diagram

This guide outlines the ECU pinout configuration for the Toyota 1NZ-FE engine, a common choice for performance swaps and economy builds. The 1NZ-FE ECU typically uses a multi-connector layout, often labeled E3, E4, E5, and E6 The ignition feedback signal used by the ECU

These are ground-triggered by the ECU to control fuel delivery. Ignition and Fuel Injection This guide outlines the