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 is the common shorthand for Caterpillar Electronic Technician, Caterpillar's dealer-level diagnostic and programming software for its electronic engines and machines. Using a Cat Communication Adapter, it retrieves active and logged fault and event codes, streams and records live data, executes diagnostic tests and sensor calibrations, sets configurable parameters, and flashes Cat ECMs via WinFlash. It spans Caterpillar on-highway, construction, mining, marine, industrial and generator applications. Technicians treat CAT ET as the essential tool for Caterpillar troubleshooting, ECM reprogramming and equipment configuration wherever OEM-level access to Cat control systems is required.
Jaltest (Truck & Off-Highway Diagnostic, Cojali) and CAT 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 CAT Electronic Technician (Cat ET) service software for Caterpillar ECMs
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