Circuit/System Description
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The accessory DC power module controls the energy flowing between the high voltage, 300-volt, DC and low voltage, 14-volt, DC to support the vehicles accessories and charge the 12-volt battery. The accessory DC power control module receives a 14-volt enable command from the hybrid powertrain control module over the serial data communication circuit. Accessory DC power module functions will run only when the accessory DC power module enable is active on the serial data communication circuit.