Throttle Position Sensor Check

Disconnect the throttle position sensor connector.

Fig 1: Locating Throttle Position Sensor Connector
Courtesy of KIA MOTORS AMERICA, INC.
Measure the resistance between the throttle position sensor side connector terminal 2 and terminal 3.
Standard value : 1.6-2.4 kW
Measure the resistance between the throttle position sensor side connector terminal 1 and terminal 3.
Normal condition:

Fig 2: Identifying Throttle Position Sensor Normal Condition
Courtesy of KIA MOTORS AMERICA, INC.
If the resistance is outside the standard value, or if it doesn't change smoothly, replace the throttle position sensor.