Question:
I plan to get the VXDIAG VCX DoIP Multi Diagnostic Tool full scanner because it allows me to scan cars. Does it support heavy-duty truck protocols like J1939?

Answer:
It works fine with regular cars and also has DOIP functionality.
VCX DoIP supports following passenger car protocols.
- ISO-13400 DoIP
 
- ISO-9141 K-Line
 
- ISO-14230 K-Line
 
- ISO-17987 LIN BUS
 
- ISO-15765 CAN
 
- SAE-J1850-VPW (GM Class2)
 
- SAE-J1850-PWM (FORD SCP)
 
- ISO-11898-2 DWCAN
 
- ISO-11898-3 DWFTCAN
 
- SAE-J2411 SWCAN (GMLAN)
 
- VAG TP16 CAN
 
- VAG TP20 CAN (SAE-J2819)
 
- VAG KW81 (SAE J2818)
 
- SAE-J2610 SCI (Chrysler)
 
- SAE-J1567 CCD BUS (Chrysler)
 
- SAE-J2740 GM ALDL
 
- SAE-J2809 HONDA DIAG-H
 
- NISSAN DDL UART with CLOCK
 
- BMW DS2
 
- FORD UBP
 
- BENZ KWFB
 
- BENZ MB-ISO
No possible to use this with heavy duty. They used to have a VCX for trucks. Now it is discontinued.

The VCX DoIP now only works for cars.
