Charging System Indicator: Battery

The Instrumental Panel Cluster (IPC) illuminates the battery indicator when the following occurs:

• The Powertrain Control Module (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 determines that the system voltage is less than 11 volts or greater than 16 volts. The IPC receives a class 2 message from the Body Control Module (BCM) indicating the system voltage.
• 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.