Nissan Zexel Ecu Pinout May 2026

The Nissan Zexel ECU (Engine Control Unit) is a sophisticated computer system used in various Nissan vehicles to control engine performance, emissions, and diagnostics. For enthusiasts, tuners, and repair professionals, understanding the ECU pinout is crucial for modifying, troubleshooting, or upgrading the engine management system. This write-up provides an in-depth look at the Nissan Zexel ECU pinout, its functions, and applications.

Always verify the 14-digit Nissan part number on the white sticker before proceeding. nissan zexel ecu pinout

Found on specific pins (often a green wire) used for communicating with OBD-I or early OBD-II scanners via the Nissan Consult protocol. The Nissan Zexel ECU (Engine Control Unit) is

| Pin | Wire Color | Function | Voltage / Signal | | :--- | :--- | :--- | :--- | | A1 | Black/Yellow | Main ECU Ground | 0V (Chassis) | | A2 | Red/Black | Battery Backup (+12V constant) | 11-14V | | A3 | White/Red | Ignition Switch (+12V switched) | 11-14V (Key ON) | | A4 | Yellow/Green | Fuel Cut Solenoid (Spill Control) | +12V to open | | A5 | Green/White | Timing Control Valve (TCV) | PWM signal (0-5V avg) | | A6 | Black/White | Sensor Ground (common) | 0V | | A7 | Light Green | Coolant Temp Sensor (ECT) | 0.5-4.5V (varies) | | A8 | Blue/Red | Intake Air Temp (IAT) sensor | 0.5-4.5V | | A9 | Yellow/Blue | Boost Pressure Sensor (Signal) | 0.5-4.5V (1-2bar) | | A10 | Brown/White | TPS (Throttle Position) Signal | 0.5-4.8V idle to WOT | | A11 | White/Black | Crank Position Sensor (NE signal) | AC sine wave (0.5-5V) | | A12 | Not used | - | - | (Pins A13-A24 continue similarly, with injector timing feedback and vehicle speed sensor) Always verify the 14-digit Nissan part number on

Here's a general overview of the pinout sections:

For detailed schematics, technicians often refer to technical manuals available on platforms like or dedicated forums such as NissanPatrol.com.au . If you need to perform an emergency reset, the Battery Disconnection Method is a standard way to clear residual memory. specific pin numbers for a particular Zexel ECU model, such as the Wiring diagram for 1994 Mitsubishi Fuso Aero Star Zexel ECU 11-Jun-2025 —