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Home >> Kia >> 2005 >> Optima EX, 2.4 6 >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System/Fuel System - 2.4L (A/T) >> MFI Control System >> Throttle Position Sensor (TPS) >> Inspection >> Using Voltmeter
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Using Voltmeter

  1. Disconnect the throttle position sensor connector.
  2. Measure resistance between terminal 1 (sensor ground) and terminal 2 (sensor power).
    Fig 1: Checking Throttle Position Sensor (TPS) Using Voltmeter
    G00330867Courtesy of KIA MOTORS AMERICA, INC.

    Standard value: 1.6~2.4 kΩ

  3. Connect a pointer type ohmmeter between terminal 1 (sensor ground) and terminal 2 (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.

    Tightening torque

    1.5-2.5 Nm (15-25 kg. cm, 1.1-1.8 lb. ft)