Tool comparison
Consult is Nissan's proprietary onboard diagnostic system and interface, evolving through Consult-I (pre-OBD, 14-pin), Consult-II and Consult-III/plus (the modern factory scan platform). It reads and clears trouble codes, streams live sensor data, performs actuator and active tests, and handles ECU/component programming and configuration across Nissan and Infiniti vehicles. Independent tools and cables — Consult USB interfaces, apps and aftermarket clones — also speak the Consult protocol for diagnostics and datalogging on older Nissans. Tuners often use Consult logging alongside tuning tools to capture factory sensor data. Consult-III plus is the dealer-level platform for current models. It is a diagnostic and programming system, not an engine-tuning or standalone-ECU product.
Toyota Techstream is the manufacturer's factory scan-tool software for the Toyota group, communicating through a Toyota MVCI or Mongoose J2534 pass-thru cable. Technicians use it for complete vehicle diagnostics — reading and clearing codes on every ECU, viewing live data and freeze-frame, and running active tests — plus Toyota-specific procedures like hybrid/EV battery health checks, throttle and steering-angle learning, injection/fuel routines, tyre-pressure and key registration, and enabling dealer-configurable "Customize" options. On supported models it performs calibration reprogramming (CUW/reflash). Because Toyota locks many functions behind dealer software, Techstream is essential for shops servicing hybrids and modern Toyotas where OBD generic tools stop short. It supports an extensive back-catalogue of model years and is a mainstay in independent Toyota/Lexus workshops.
Nissan Consult (OEM Diagnostic, Nissan) and Toyota Techstream (OEM Diagnostic, Toyota Motor Corporation) compete in the same space, so the choice comes down to coverage, workflow and price for your specific ECUs. Nissan's factory diagnostic protocol and interface (Consult I/II/III) Factory scan software for Toyota, Lexus and Scion service and coding
Whichever you flash with, Softechpro Solutions auto-applies DPF/EGR/AdBlue/DTC-off modules and Stage patterns with automatic checksum correction across ~1,400 firmwares on Windows & macOS — the fast way to get the actual file edits done.
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