If only battery voltage is present at the battery on a running engine, does this mean the alternator is “bad?” No, it does not. It only means that the alternator is not charging, but does not reveal why. Therefore, it does not point to a faulty alternator. All too often, the alternator is condemned by technicians due to this test alone. The cause could instead be a module that distributes the power to the vehicle and regulates the alternator.
Engineers have devised two strategies that can be called the “immune system” for the electrical system.
The alternator produces an AC current that must be converted into DC current by way of a rectifier.
Power windows are great as long as they roll up and down when commanded to do so.
Throttle-by-wire systems proactively manage the air and fuel going into the combustion chamber.
The Hyundai hybrid system has a motor control unit (MCU) and hybrid control unit (HCU).
To resolve the issue, fully disconnect the negative lead from the battery terminal.