Check Gauges

CHECK GAGES (WITH HUD)
The Head Up Display (HUD) illuminates the CHECK GAGES indicator as determined by the IPC. The HUD receives a class 2 message from the IPC requesting illumination. The HUD illuminates the CHECK GAGES indicator when the following occurs:
^ The IPC determines that the coolant temperature is greater than 124°C (255°F). The IPC receives a class 2 message from the PCM indicating the coolant temperature.
^ The IPC detects that the system voltage is less than 10.5 volts or greater than 16.2 volts. The IPC receives a class 2 message from the Dash Integration Module (DIM) indicating the system voltage.
^ The IPC illuminates the brake system indicator.
^ The IPC illuminates the ABS indicator.

CHECK GAGES (WITH SYSTEMS MONITOR)
The IPC illuminates the CHECK GAGES indicator in the systems monitor when the following occurs:
^ The IPC determines that the fuel level is less than a pre-determined value. The IPC receives a class 2 message from the PCM indicating the fuel level percent. The IPC sends a class 2 message to the radio in order to activate an audible warning.
^ The IPC determines that the coolant temperature is greater that 124°C (255°F). The IPC receives a class 2 message from the PCM indicating the coolant temperature. The IPC sends a class 2 message to the radio in order to activate an audible warning.
^ The PCM determines that the engine oil pressure is low. The IPC receives a class 2 message from the PCM requesting illumination. The IPC sends a class 2 message to the radio in order to activate an audible warning.
^ The ignition is ON, with the engine OFF. The IPC receives a class 2 message from the PCM requesting illumination.
^ The PCM detects a malfunction in the charging system. The IPC receives a class 2 message from the PCM requesting illumination. The IPC sends a class 2 message to the radio in order to activate an audible warning.
^ The IPC detects that the system voltage is less than 10.5 volts or greater than 16.2 volts. The IPC receives a class 2 message from the dash integration module (DIM) indicating the system voltage. The IPC sends a class 2 message to the radio in order to activate an audible warning.
^ The IPC detects a loss of class 2 communications with the DIM and the IPC detects that the system voltage is less than 10.5 volts or greater than 16.2 volts. The IPC uses the battery positive voltage circuit in order to control the charging system indicator when the IPC loses communication with the DIM. The IPC 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 5 seconds.