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Home >> Chevrolet >> 2017 >> Bolt EV Premier >> Repair and Diagnosis >> Electrical >> Charging Systems >> Battery, Charging System And Starting System >> Diagnostic Information and Procedures >> DTC P0AF7: 14V Power Module High Temperature >> Circuit/System Description
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Circuit/System Description

The 14 V power module, also called the accessory DC power control module. The 14 V power module is an electronic device that takes the place of the generator on a traditional vehicle. On a hybrid or electric vehicle the 14 V power module converts high voltage (300 V) direct current (DC) to low voltage (12 V) DC for accessory electrical operation and to charge the 12 V battery. Normally, the 14 V power module only supplies 12 V DC when the vehicle is under a normal drive cycle. There are certain instances when the vehicle is being charged through a standard wall socket where the 14 V power module operation is required to sustain the 12 V battery. The 14 V power module is capable of supplying up to 130 Amps of 12 V DC.