Front seat back

WARNING: This page is about a different car, the 2017 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.

Disconnect the negative battery cable and wait 1 min or more. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION .)
Disconnect the seat warmer unit connector.
Verify that the continuity between the seat warmer unit terminals is as indicated in the table.

Fig 1: Seat Warmer Unit Continuity Reference Chart (Front Seat Back)
Courtesy of MAZDA MOTORS CORP.

Fig 2: Checking Front Seat Back Warmer Unit
Courtesy of MAZDA MOTORS CORP.
- If not as indicated in the table, replace the front seat back pad. (See FRONT SEAT BACK TRIM REMOVAL/INSTALLATION .)