An Open-Circuit Test On MMI 2G MOST Bus and VCDS Read Out Results

Audi MMI 2G & 3G MOST bus is very simple but yet very hard to diagnose which components connected to the bus is faulty due to the serial optical connections. If the system is not thoroughly tested and diagnosed, many good parts can be replaced in the process. This is a simple test just show that an open circuit caused the system looked bad and VCDS report shows many non related failures. If…