With the power seat switch in each position, make sure that continuity exists between the terminals below. If continuity is not as specified, replace the power seat switch.
Fig 1: Identifying Power Seat Switch Connector Terminals
Courtesy of KIA MOTORS AMERICA, INC.
Fig 2: Driver Power Seat Switch A Connector Terminals Continuity Chart
Courtesy of KIA MOTORS AMERICA, INC.
Fig 3: Driver Power Seat Switch B Connector Terminals Continuity Chart