Miscellaneous Controls: Generator

The Powertrain Control Module (PCM) uses various input signals and an internal electronic voltage regulator to maintain charging system voltage at 12.9-15.0 volts. Internal electronic voltage regulator controls charging system voltage by cycling the ground circuit on the generator field. Battery voltage is supplied to generator through a fusible link and the Auto Shutdown (ASD) relay. For operation of ASD relay, see AUTO SHUTDOWN (ASD) RELAY  . If a failure exists in the charging system, a Diagnostic Trouble Code (DTC) will be stored in the PCM.