Principles of Operation: Notes

The generator has a built-in voltage regulator set point. The generator decides optimal charging system voltage based on temperature. The generator has a communication line (GEN MON) to the powertrain control module (PCM), which indicates the generator operating duty cycle. This is a pulse-width modulated (PWM) signal. The communication line (GEN MON) is used for fault indication as well. The generator has an I-terminal used for initially turning on the generator. The generator has a battery sense terminal (A-terminal).