Fasten Safety Belt Warning

The inflatable restraint sensing and diagnostic module (SDM) senses that the drivers seat belt is not buckled and the signal is low. The SDM sends a class 2 message to the instrument panel cluster (IPC) requesting illumination of the seat belt indicator. The SDM sends a class 2 message to the chime producer indicating a chime at the rate of 50 pulses per minute, slow rate chime, for a duration of approximately 6 seconds. The fasten safety belt warning sounds and the seat belt indicator illuminates when the following occurs:

• Ignition switch transitions to ON.
• The seat belt switch signal to the SDM is low.

If the seat belt is buckled when the ignition is turned ON, the chime will not sound. If the seat belt is buckled while the chime is sounding, the chime stops.