Circuit/System Description (Battery, Charging System And Starting System)

The battery current sensor is a 3-wire hall effect current sensor. The body control module (BCM) supplies 5 V and ground to the battery current sensor. The battery current sensor measures the amount of current flowing to or from the battery and supplies a pulse width modulation (PWM) signal to the BCM. The BCM monitors the battery current signal and sets DTC B1516 08 if the signal is outside the normal range if 4-96 percent duty cycle. The BCM also monitors the current polarity and sets DTC B1516 66 if reverse polarity is detected.