Seat Belt Warning Chime

WARNING: This page is about a different car, the 2008 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.

When the ignition switch is turned ON with the seat belt unfastened [seat belt buckle switch LH unfastened], warning chime will sound for approximately 6 seconds.

Ground is supplied

to combination meter terminal 1
through seat belt buckle switch LH terminal 1.

Seat belt buckle switch LH terminal 2 is grounded through body grounds B7 and B19.

Combination meter sends seat belt buckle switch LH unfastened signal to unified meter and A/C amp. Via communication lines between unified meter and A/C amp. and combination meter.

BCM receives seat belt buckle switch LH unfastened signal from unified meter and A/C amp. via CAN communication line, and sends seat belt warning signal to unified meter and A/C amp. via CAN communication line. Unified meter and A/C amp. sends seat belt warning signal to combination meter via communication line between unified meter and A/C amp. and combination meter.

When the combination meter receives the seat belt warning signal, it sounds the warning chime. The BCM controls the (6 second) duration of the seat belt warning chime.