QX56 AWD V8-5.6L (VK56DE) (2005)
Ground is supplied
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to combination meter terminal 27
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through seat belt buckle pre-tensioner assembly (seat belt buckle switch) LH terminal 1.
Seat belt buckle pre-tensioner assembly (seat belt buckle switch) LH terminal 2 is grounded through body grounds B7 and B19.
The combination meter sends seat belt buckle switch LH unfastened signal to BCM via CAN communication line.
BCM receives seat belt buckle pre-tensioner assembly (seat belt buckle switch) LH unfastened signal from combination meter via CAN communication
line, and sends seat belt warning signal to the combination meter via CAN communication line. 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.
CAN Communication System Description
Refer to "INFORMATION BUS".