Problem: I have a Xtool h6 pro with kc501 (same as Xtool A80 PRO), I’m trying to read/write a BMW cas4 with no success, I follow the wiring diagram and tried the 2 methods the app shows. I’ve even connected the kc501 to my pc but still no comms.
Experienced user’s advice:
The black wire and white wire.
Move white wire to the hole in the pcb and try again.
Obd2tool.com engineer replied:
Sometimes we have the same problem with Xtool h6 pro ( H6 PRO = Xtool A80 PRO in the aspect of software ) , we find out it has a poor welding and then re-solder it again, finally we can read and write the data successfully.
Hope it helps!