what does it mean to service rt bus

Hello, not sure where the "rt bus" information has come from, but the first thing I would do is start by checking your engine's 12 volt battery. Verify that it is fully charged and able to sustain the load of powering all the vehicle's components and the starter motor. Once that is eliminated, then you can perform hands on circuit testing if the problem remains. www.repairpal.com/repair-shops