Component Description
Generator
The generator is equipped with an electronic internal voltage regulator.
Generator Current Sensor
The generator current sensor is attached to the generator B+ cable. It is supplied a 5-volt reference voltage and a ground from the PCM. The generator current sensor is a Hall-effect sensor that supplies an analog feedback signal to the PCM. The PCM uses this information for battery charging strategy and idle stability and torque control.
Battery Current Sensor
The battery current sensor is attached to the battery negative cable. It is supplied a 5-volt reference voltage and a ground from the BCM. The battery current sensor is a Hall-effect sensor that supplies an analog feedback signal to the BCM. The BCM reads the battery current sensor feedback voltage to determine how much current is flowing through the battery ground cable. The BCM uses this information for battery state of charge.
Powertrain Control Module (PCM)
The PCM monitors and controls the charging system.
Generator Clutch
Some vehicles are equipped with a one-way clutch (OWC) in the generator pulley. The primary function is to separate the generator rotor inertia from the FEAD belt, lowering belt tension at high engine deceleration rates and reducing NVH. The generator clutch is serviced separately from the generator.
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