Zexel Ecu Pinout | Nissan

Stripes: Example “B/W” = Black wire with White stripe.

Adjusts the internal pump pressure to advance or retard injection timing based on engine speed and load. Primary Input Sensors nissan zexel ecu pinout

Look directly at the face of the ECU header pins (or the back of the wire harness plug). Stripes: Example “B/W” = Black wire with White stripe

Nissan often used two main types of ECUs: Zexel for diesel engines and Bosch for some gasoline and later diesel models. Zexel is a former Japanese supplier, especially known for its VP pump systems like the VP37 and VP44. Here's a quick reference for common applications: Nissan often used two main types of ECUs:

The ECU adjusts fuel delivery dynamically based on real-time data from these pins. Pin Number Sensor Type / Signal Engine Coolant Temperature (ECT) Thermistor input (Voltage drops as engine warms) Pin 17 Accelerator Position Sensor (APS) Potentiometer input from the gas pedal (0.5V - 4.5V) Pin 21 Crankshaft Position Sensor (CKP) Magnetic pickup (RPM signal calculated from flywheel) Pin 22 Needle Lift Sensor (Nozzle Sensor) Found on Injector #1; detects exact start of injection Pin 30 Mass Air Flow (MAF) / MAP Sensor Measures intake air volume for smoke limitation 4. Relays, Outputs, and Diagnostics Pin Number Description Pin 9 Glow Plug Relay Control Triggers the heavy-duty glow plug relay under the hood Pin 11 Tachometer Output Sends square-wave RPM signal to the dashboard cluster Pin 46 Check Engine Light (MIL) Grounds the dashboard bulb to illuminate the warning light Pin 54 Rx (RxD) - Consult Diagnostic Data receive line for Nissan Consult-I scan tools Pin 55 Tx (TxD) - Consult Diagnostic Data transmit line for Nissan Consult-I scan tools Step-by-Step Diagnostic Proving Guide

Never assume your pinout matches 100%. Always back-probe or use a factory wiring diagram for your chassis number. The table below is a generalized reference for the most common setup.

The following pin assignments have been documented for this specific ECU (23710-2J610/407913-111) found in the Nissan Primera P11 CD20T diesel: