Nissan Zexel Ecu Pinout Link

If your ECU does not match the table above:

For example:

This pulse-width modulated signal adjusts injection timing dynamically. The valve resistance should be 12-20 ohms between pin A5 and sensor ground (A6). If shorted, the ECU will burn out the driver transistor. nissan zexel ecu pinout

They also found pins tied to the air flow sensor, idle air control stepper/solenoid, knock sensor, and a tach output to the dash. Some Zexel ECUs have a diagnostic serial or pulse line that flashes check-engine codes using a blinking LED or communicates via a data link: If your ECU does not match the table above:

Sam documented which pins were 5V reference lines (used by many sensors) vs. signal grounds, since mixing those up can cause erratic readings. Sam documented which pins were 5V reference lines

Note: Pin locations can vary by exact hardware revision (Model Number printed on the ECU label). Always verify with a multimeter before applying power.

Connector Key: