Robert Boschgmbh

David Burnham

Michael R Meier

Systems and methods of diagnosing a condition of a reverse-voltage protection switch in an electric system. The electric system includes a power source, an electric load, and a reverse-voltage protection switch in a series-type configuration. The electric system further includes a ground switch configured to selectively connect the source terminal of the reverse-voltage protection circuit to ground. The terminals of the reverse-voltage protection circuit are disconnected from the power source. The ground switch is closed to connect one terminal of the reverse-voltage protection switch to ground. A bias voltage is applied to the other terminal of the reverse-voltage protection switch and the reverse-voltage protection switch is opened. An improper short-circuit condition across the reverse-voltage protection switch is detected when the voltage at the biased terminal of the reverse-voltage protection switch is less than a threshold when the reverse-voltage protection switch is opened.

Diagnosable reverse-voltage protection for high power loads

An electronic control module for a vehicle. The electronic control module includes a housing, a temperature sensor positioned in the housing, and a controller positioned in the housing and coupled to the temperature sensor. The controller includes a processor, a memory, and a plurality of switches. The controller performs a first function related to a comfort level of an occupant of the vehicle at a first level of functionality. The controller also detects a temperature in the housing, and modifies the first function when the detected temperature exceeds a temperature threshold. The modification of the first function reduces a quantity of heat generated by the controller.

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Berkley, MI, United States of America

David Burnham