Tool comparison
Jaltest, from the Spanish company Cojali, is a leading multi-brand diagnostic system for commercial and off-highway vehicles. It covers trucks, buses, trailers, light commercial vehicles, agricultural and construction machinery, and marine and stationary engines, with deep coverage of makes such as Mercedes, MAN, Scania, Volvo, DAF and Iveco as well as countless implement and engine brands. The software, paired with the Jaltest Link interface, reads and clears fault codes, shows live data, runs actuator and system tests, and performs parameter settings, calibrations, forced regenerations and component programming. Fleets, agricultural dealers and heavy-equipment workshops rely on it as a single tool across mixed fleets, with module-based licensing for CV, agricultural, off-highway and marine segments.
Cat ET (Caterpillar Electronic Technician) is Caterpillar's official service software for its electronically controlled engines and machines. Connected through a Cat Communication Adapter (III), it reads and clears diagnostic and event codes, displays and logs live parameters, runs diagnostic tests and calibrations, adjusts configurable parameters, performs flash programming of Cat ECMs (with WinFlash), and reviews service and trip data. Cat dealers, fleets and equipment shops use ET across on-highway trucks, construction, mining, marine and power systems. It is the standard tool for Caterpillar engine and machine diagnostics and reprogramming where genuine OEM access is required.
Jaltest (Truck & Off-Highway Diagnostic, Cojali) and Caterpillar ET (Truck & Off-Highway Diagnostic, Caterpillar) compete in the same space, so the choice comes down to coverage, workflow and price for your specific ECUs. Cojali multi-brand truck and off-highway diagnostic system Caterpillar Electronic Technician, the OEM tool for Cat engines/machines
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.
See SoftechproMore on Jaltest