Component Inspection

■ Throttle Position Sensor Inspection 

1. Ignition "OFF".
2. Connect VMI to KDS/GDS 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 Fig 1 below

   Fig 1: Scantool Display - Normal Throttle Position Sensor Signal Waveform At Idle To Acceleration (W.O.T)

   Courtesy 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 Vehicle 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/GDS. (Refer to IMMOBILIZER SYSTEM )
     2. After finishing "PCM Neutral mode", perform "Key teaching" procedure with KDS/GDS. (Refer to IMMOBILIZER SYSTEM )

     
     [In the case of installing new PCM]
     Perform "Key teaching" procedure with KDS/GDS. (Refer to IMMOBILIZER SYSTEM )
     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/GDS. (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 the Throttle Body and then go to "Verification of Vehicle Repair " procedure.
     CAUTION:

     • Install the component with the specified torques.
     • Note that internal damage may occur when the component is dropped or mistreated.