2009 Kia Optima L4-2.4LFACTORY OEM SERVICE PROCEDURE

Throttle Position Sensor: Testing and Inspection





Component Inspection

Throttle position sensor (TPS)
1. Connect a scantool on the Data Link Connector (DLC).
2. Start engine and check output voltages of TPS 1 and 2 at C.T and W.O.T.

Specification : Refer to Specification section.


3. Turn ignition switch OFF and disconnect the scantool from the DLC.
4. Disconnect ETC module connector and measure resistance between ETC module terminals 1 and 2.

Specification : Refer to Specification section.


ETC motor
1. Disconnect ETC module connector and measure resistance between ETC module terminals 3 and 6.

Specification : Refer to Specification section.


ETC system initialization
When ignition switch is turned from OFF to ON, ETC system learns the throttle angle in 1 sec.
1. Throttle valve moves from limp-home position to close position.
2. And then, it opens to about 15° and moves to limp-home position.
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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