Seat belt strap switch specifications

Without inserted buckle tongue (1) to buckle catch (2) (terminal "A"and "B"):  Continuity

With inserted buckle tongue (1) to buckle catch (2) (terminal "A"and "B"):  No continuity (infinity ohm)

Fig 1: Checking Driver Side Seat Belt Buckle Switch For Continuity

Courtesy of SUZUKI OF AMERICA CORP.