Using voltmeter

1. Disconnect the throttle position sensor connector.
2. Measure resistance between terminal 1 (sensor ground) and terminal 4 (sensor power).

   Standard value: 3500-6500 ohms 

   Fig 1: Identifying TPS Resistance Test Procedure

   Courtesy of KIA MOTORS AMERICA, INC.
3. Connect a pointer type ohmmeter between terminal 1 (sensor ground) and terminal 3 (sensor output).
4. Operate the throttle valve slowly from the idle position to the full open position and check that the resistance changes smoothly in proportion with the throttle valve opening angle.
5. If the resistance is out of specification, or fails to change smoothly, replace the throttle position sensor.

TPS sensor tightening torque: 1.5-2.5 Nm (15-25 kg. cm, 1.1-1.8 lb. ft)