Avoid expensive subscription services. Use these legal, free sources:
Do not pay for “premium” pinouts – they are often copied from these free sources: yd25 ecu pinout free
Tip: The part number is printed directly on the metal casing of the ECU. Do not rely solely on the year of the vehicle, as manufacturing crossover is common. Avoid expensive subscription services
Below is a reference guide for common pin locations on the standard Hitachi ECUs found in the D40 Navara/R51 Pathfinder platform. Always verify with a multimeter. Wire colors can change between production months. Black is almost always Ground)
Nissan is fairly consistent with wire colors (e.g., Black is almost always Ground), but never rely on color alone. Use a digital multimeter to check for continuity.