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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1961 (Hybrid Controls - 3.6L (Hp5) - Introduction) >> Description and Operation >> Drive Motor Generator Control Module Description and Operation >> Accessory DC Power Control Module (APM) >> Operating Functions

Operating Functions

WARNING: This page is about a different car, the 2009 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.

The APM is the device which converts high voltage (300V) direct current (DC) to low voltage (12V) DC for accessory electrical operation and to charge the 12V accessory battery. The APM is capable of supplying up to 175 Amps of 12V DC. In Jump Assist mode the APM converts 12V DC to HV DC to charge the high voltage hybrid batteries. The APM is capable of supplying up to 2.7 Amps at 290 volts DC on the high voltage circuit when operating in Jump Assist. An external 12V DC battery charger is required during the Jump Assist mode because the APM and vehicle controllers may draw as much as 80 Amps of current from the vehicles 12V DC system.

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