For an accurate pinout:
Nissan vehicles of the 1990s relied on Engine Control Units manufactured primarily by two suppliers: Hitachi and Zexel (often branded as Zexel or Bosch). While functionally similar, Zexel ECUs often differ in pinout assignment, board layout, and internal architecture compared to their Hitachi counterparts. nissan zexel ecu pinout work
: Often identifies as a "Plug & Play" unit with internal EEPROM chips that store immobilizer data. Voltage Testing For an accurate pinout: Nissan vehicles of the
Some versions require a "boot" connection (often a blue wire) to a specific point on the internal circuit board to allow writing. Common Troubleshooting Issues nissan zexel ecu pinout work