After rectifying an abs fault on a new customers Q7 she asked us to investigate a long standing fault with the MMI system, namely apart from a brief illumination of the screen nothing functioned at all. We began by connecting the Autologic Assist in order to communicate with the various modules associated with the media system, though we could communicate with all the modules numerous error codes were present in various modules. The next step was to carry out a fault clear broadcast which clears all the error codes in one operation. Once complete we attempted to switch on the MMI and as expected the system still displayed the fault. We then carried out a loop break diagnostic check, this …




