The Engine Control Unit (ECU) Pinout Diagram of Nissan 1990-1995 300ZX is illustrated in the following picture. If you need to diy knowing the description of the pin number as seen in the diagram, the picture below might be you’ve looked for. The pinout diagram covers the name, functions and signal type of the mentioned vehicle for such tachometer signal, engine control module, knock sensor, mass airflow sensor, engine coolant temperature sensor, O2 sensor signal, sensor ground, throttle position sensor, ignition switch, power supply, vehicle speed sensor, injectors, power ground, and etc. For complete pinout descriptions of Nissan 300ZX & Maxima VE30DE ECU, you may find here in the http://www.plxdevices.com/ECUDatabase/Nissan/Nissan_300ZX_90_95_Maxima_VE30DE_92_94.pdfm