Charge Lamp/Indicator: Description and Operation

CHARGING SYSTEM INDICATOR
The IPC illuminates the charging system indicator when the following occurs:

- The PCM detects that the generator output is less than 11 volts or greater than 16 volts. The IPC receives a class 2 message from the PCM requesting illumination. The IPC sends a class 2 message to the body control module (BCM) indicating that the charging system indicator is illuminated. The BCM sends a class 2 message to the radio in order to activate an audible warning.

- The IPC performs the displays test at the start of each ignition cycle. The indicator illuminates for approximately 3 seconds.

- The ignition is on, with the engine off.

- The ignition is in the accessory position.