Abstract: A short-circuit test system and method of use wherein the system generally comprises an interface circuitry for communication of voltage signals over a serial bus with at least one bus sensor. The interface circuitry generally comprises at least one bus sensor, a means to measure and compare input voltage to a predefined value, a means to temporarily disable the bus sensor when the input voltage is less than the predefined value, and an evaluation logic to determine when a short-circuit condition exists on the bus sensor.