Service Charging SYS - 102
WARNING: This page is about a different car, the 2004 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.
The IPC illuminates the SERVICE CHARGING SYS - 102 indicator in the DIC when the PCM detects a malfunction with the generator output. The IPC receives a class 2 message from the ECM/PCM requesting illumination.