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Home >> Kia >> 2012 >> Optima SX >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis (2 Of 3) - 2.0L >> DTC P050A: Cold Start Idle Air Control System Performance >> Inspection/Repair >> Component Inspection

Component Inspection

  1. Select 'Actuation Test' mode and execute 'ETC motor' item.
    Fig 1: Screen Display - TPS Voltage Waveform & ETC Motor Test
    G07382682Courtesy of KIA MOTORS AMERICA, INC.
    • During 'ETC Motor' test, TPS1 and TPS2 show symmetrical movements.
  2. Is the waveform normal?

    YES 

    • Check for poor connection between PCM and component: backed out terminal, improper mating, broken locks or poor terminal to wire connection. Repair as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.

    NO 

    • Check ETC for contamination, deterioration, or damage. Substitute with a known-good ETC and check for proper operation. If the problem is corrected, replace TPS and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.