h3dxb, thanks for the technical description - ISIS.
Can you establish what the purpose of the temperature sensors is, and if these are internal to ISIS or require an external temperature input.
Is there a difference / switching routine between a failed input – e.g. ADIRS off, ARINC 429, and a working bus (but with corrupt data) i.e. a triple sensor might vote out a system by comparison (IAS) – a 'failed' system, but a dual sensor might pass erroneous data (TAT).