Group 177 Tools VCADS Pro Tools The following hardware is used to operate VCADS Pro. The tools can be ordered from Volvo Trucks North America; please refer to the specific tool number when ordering. 1 PC tool-package 7 5 J-43939, 9 pin Diagnostic adapter (for VN vehicles built from January 1999) 2 9998555, Communication interface unit 3 9812331, Extension cable 6 9998496, Pressure gauge 4 J-43999, 6 pin Diagnostic adapter (for VN vehicles prior to 1999) 7 9998495, Air Pressure Hose 19