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Home >> Kia >> 2020 >> Optima S >> Repair and Diagnosis (Single Page) >> Engine Performance >> Testing & Diagnosis >> Engine Control System Diagnosis - 2.4L (4 Of 6) (Except HEV) >> DTC P0605-00: Internal Control Module Read Only Memory (ROM) Error >> Component Inspection >> Throttle Position Sensor Inspection
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Throttle Position Sensor Inspection

  1. Ignition "OFF".
  2. Connect VMI to KDS and set up an oscilloscope as follow (2-channel);

    Channel A (+): Pin No. 4 (TPS1 Signal) terminal of Throttle Body.

    Channel A (-): Ground

    Channel B (+): Pin No. 5 (TPS2 Signal) terminal of Throttle Body.

    Channel B (-): Ground

  3. Ignition "ON" & Engine "ON".
  4. Testing Condition: Idle to Acceleration (W.O.T).

    Specification:  Refer to illustration below

    G12926153Courtesy of KIA MOTORS AMERICA, INC.

    * Sum of TPS1 and TPS2 signal voltage should equal to approximately 5V.

  5. Is the measured value within specification?

    YES 

    • Carefully re-do this troubleshooting guide steps.
    • If the diagnostics have been performed correctly with no failure found, replace the PCM and then go to "VERIFICATION OF REPAIR " procedure.
    CAUTION: When replacing the PCM, the vehicle equipped with the immobilizer must be performed procedure as below.
    [In the case of installing used PCM]
    1. Perform "PCM Neutral mode" procedure with KDS. (Refer to "IMMOBILIZER ")
    2. After finishing "PCM Neutral mode", perform "Key Teaching" procedure with KDS. (Refer to "IMMOBILIZER ")

    [In the case of installing new PCM]
    Perform "Key Teaching" procedure with KDS. (Refer to "IMMOBILIZER ")
    CAUTION: When replacing the PCM, the vehicle equipped with the smart key system (Button start) must be performed procedure as below.
    [In the case of installing used PCM]
    1. Perform "PCM Neutral mode" procedure with KDS. (Refer to "SMART KEY ")
    2. After finishing "PCM Neutral mode", insert the key (or press the start button) and turn it to the IGN ON and OFF position. Then the PCM learns the smart key information automatically.

    [In the case of installing new PCM]
    Insert the key (or press the start button) and turn it to the IGN ON and OFF position. Then the PCM learns the smart key information automatically.

    NO 

    • Carefully re-do this troubleshooting guide steps.
    • If no problems were found with the circuits or connectors, replace Throttle Body and then go to "VERIFICATION OF REPAIR " procedure.
    CAUTION:
    • Install the component with the specified torques.
    • Note that internal damage may occur when the component is dropped or mis- treated.
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