Fasten Safety Belt Warning

The body control module (BCM) activates the fasten safety belt audible warning as requested by the sensing and diagnostic module (SDM). The SDM sends a serial data message to the BCM. The fasten safety belt warning sounds and the fasten safety belt indicator illuminates when the following occurs:

• The ignition switch transitions to ON.
• The inflatable restraint SDM detects that the driver seat belt is not buckled and or the signal is low. The BCM receives a serial data message from the SDM indicating the driver seat belt status.

If the seat belt is buckled when the ignition is turned ON, the chime does not sound. If the seat belt is buckled while the chime is sounding, the chime stops. If the seat belt is unbuckled after the initial transition to ON, the chime does not sound.