Methods and systems for diagnosing a controller area network

A system for monitoring a controller area network (CAN) bus, comprising:

• a non-transitory computer readable medium comprising:
• a software based solution module that receives fault data associated with the CAN bus, and that processes, by a processor, the fault data with a software based method to determine a first propositions set;
• a hardware based solution module that processes, by the processor, the fault data with a hardware based method to determine a second proposition set;
• an evaluation module that processes, by the processor, the first propositions set and the second proposition set to determine a fault decision and processes the first propositions set and the second propositions set to determine a probability mass;
• and
• a diagnosis module that, by the processor, generates a diagnosis of the CAN bus based on the fault decision and the probability mass.

A vehicle, comprising:

• a plurality of controllers communicatively coupled via a controller area network bus,
• wherein at least one of the controllers comprises a non-transitory computer readable medium comprising:
• a software based solution module that receives fault data associated with the CAN bus, and that processes, by a processor, the fault data with a software based method to determine a first propositions set;
• a hardware based solution module that processes, by the processor, the fault data with a hardware based method to determine a second proposition set;
• an evaluation module that processes, by the processor, the first propositions set and the second proposition set to determine a fault decision based on a Dempster-Shafer theory, and a knowledge base;
• and
• a diagnosis module that, by the processor, generates a diagnosis of the CAN bus based on the fault decision.