Seat Belt System Circuit Description

WARNING: This page is about a different car, the 2007 Hummer H2. However, it is still accessible from the selected car via links, so may be relevant.

The seat belt indicator will illuminate when the following conditions occur simultaneously:

The ignition switch is in one of the following positions:
- RUN
- BULB TEST
- START
The LF seat belt is not fastened.

The audio alarm, located within the radio/amplifier, also incorporates an indicator within the instrument panel cluster (IPC). The seat belt indicator works in conjunction with the audio alarm. When the SDM receives a signal that the LF seat belt is unfastened, the SDM sends a signal to the IPC to command ON the seat belt indicator and to the radio/amplifier to command ON the audible alarm.