Charging Systems: Description

The LR630 (140-amp) generator is used along with the Instrument Panel Cluster (IPC) and Powertrain Control Module (PCM). Generator is liquid cooled. Engine coolant is passed through a tube molded in end frame next to electronic components to supplement air cooling.

The generator and related charging system circuitry has self-diagnostic capability. A communication process has been incorporated between the IPC, PCM and generator. When the generator circuit voltage passes outside of programmed limits (10-16 volts), Diagnostic Trouble Codes (DTCs) will set. The malfunction may also be indicated by BATTERY NOT CHARGING, BATTERY VOLTAGE LOW, BATTERY VOLTAGE HIGH or BATTERY SAVER ACTIVE message on the Driver Information Center (DIC).

The voltage regulator is enclosed in a solid mold, mounted inside the generator. A capacitor, mounted in the end frame, protects the rectifier bridge from high voltage and suppresses radio noise.