Service Vehicle Soon

The IPC illuminates the SERVICE VEHICLE SOON indicator in the following conditions:

• The PCM detects certain malfunctions that are not related to the emissions system. The body control module (BCM) sends a message requesting illumination to the IPC via the serial peripheral interface (SPI). The BCM receives a class 2 message requesting illumination from the PCM.
• The BCM detects a loss of SPI data from the IPC.