Electrical System

SERVICE VEHICLE SOON
The IPC illuminates the SERVICE VEHICLE SOON indicator when the following occurs:
^ The Body Control Module (BCM) detects certain malfunctions in the lighting system. The IPC receives a class 2 message from the BCM requesting illumination. The IPC sends a class 2 message to the BCM indicating that the service vehicle soon indicator is illuminated. The BCM sends a class 2 message to the radio in order to activate an audible warning.
^ The Electronic Brake Control Module (EBCM) detects a malfunction in the traction control system. The IPC receives class 2 messages from the EBCM requesting illumination of both the service vehicle soon and traction off indicators.
^ The IPC performs the displays test at the start of each ignition cycle. The indicator illuminates for approximately 3 seconds.
^ The IPC detects a loss of class 2 communications with the BCM.