Bus Failure Messages

Bus Failure Messages
Short to Battery
Either or both of the bus wires are shorted to the battery potential.
Short to 5 Volts
Either or both of the bus wires are shorted to a 5-volt potential.
Short to Ground
Either or both of the bus wires are shorted to ground.
Bus (+) & Bus (-) Shorted Together
The two bus wires are shorted together.
No Termination
The bus system has lost connection with all of its terminators.
Bus Bias Level Too Low
Either of both of the bus wire potentials are significantly below their normal 2.5 volts.
Bus Bias Level Too High
Either of both of the bus wire potentials are significantly above their normal 2.5 volts.
No Bus Bias
The bus system has lost connection with all modules that provide bias.
Bus (+) Open
The bus (+) wire has lost connection with termination and/or bias.
Bus (-) Open
The bus (-) wire has lost connection with termination and/or bias.
Not receiving Bus Messages Correctly
The DRB cannot communicate over the bus and does not know why.