Disconnect the negative (-) battery terminal.

Remove the floor console tray.

(Refer to Body - "Console")

Remove the seat heater switch connector (A) from the floor console tray.

Operate driver seat heater switch and check that continuity exists between the terminals.

If there is no continuity, replace the seat heater switch

Operate assist seat heater switch and check that continuity exists between the terminals.

If there is no continuity, replace the seat heater switch

Disconnect the negative (-) battery terminal.

Remove the rear door trim.

(Refer to Body - "Rear Door")

Turn rear seat heater switch ON and check that continuity exists between the terminals.

If there is no continuity, replace the seat heater switch (A) after loosening the screws.