Error recognition device for a multi-voltage vehicle electrical system

摘要

A device for fault detection in a multivoltage on-board system is described which has at least one detection device, which detects a supply potential (U0) which is supplied to a power distributor (16) for supplying electrical loads (22). The power distributor supplies power to at least one electrical load (22) via at least one output (9). An additional detection device is provided, which detects the output potential (U1) at the output (9). Fault detection means (24) generate a fault signal (26) if the output potential (U1) deviates from the supply potential (U0) by a certain value.