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03-18 Operation of charge warning lamp ▶ ECU checks the generating voltage from alternator and circuit conditions and sends the warning lamp ON signal to meter cluster through CAN line. Basic control logic according to the driving conditions ▶ Engine ECU determines the engine loads according to the fuel injection volume and engine speed. It charges the battery by increasing the generating voltage during deceleration. To improve the fuel economy by reducing the alternator load during acceleration, engine ECU decreases the generating voltage and consumes the battery voltage. |