Front Seat Heater Wire Inspection

Confirm that seat heater switch is OFF position.
Disconnect two couplers of seat heater under the seat cushion. (If seat under tray is equipped, pull out coupler between tray and seat cushion.)
Check for continuity between terminals as shown below. If not continuity, replace faulty seat heater with seat cushion.
Seat heater circuit specifications

Seat back: Between terminal "A" and "B"

Seat cushion: Terminal "C" and "D"

Seat cushion: Terminal "D" and "F"

Seat cushion: Terminal "E" and "G"

Fig 1: Checking Front Seat Heater Circuits
Courtesy of SUZUKI OF AMERICA CORP.