Charging System - Overview: Overview

The generator is driven by the FEAD  belt. When the engine is started, the generator begins to generate AC  voltage which is internally converted to DC  voltage. The DC  voltage level is controlled by the voltage regulator (located on the rear of the generator) and is supplied to the battery. The PCM  works with the generator internal voltage regulator over two communication circuits, GENMON and GENCOM to control the voltage regulator setpoint.

This vehicle is equipped with load shed strategy. The BCM  monitors the battery state of charge using the battery current sensor attached to the negative battery cable. The PCM  monitors the generator current using the generator current sensor attached to the generator B+ battery cable. The PCM  uses the information supplied from the generator current sensor to adjust the engine idle stability and torque control.