: Always verify the Red wire for power supply (2-pin red connector) and Black wire for ground (1-pin black connector) before performing any bench work. Part Number Verification : Pinouts are best identified by the ECU part number (e.g., 23710-VC616 23710-7F403
Nissan used at least two major ZEXEL ECU generations. nissan zexel ecu pinout work
interface. Pins like SCI RX (Pin 8), TX OUT (Pin 18), and CLK (Pins 13-15) are critical for diagnostic communication. Power & Ground : Always verify the Red wire for power
.