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Home >> Kia >> 2016 >> Forte5 SX, Automatic Trans >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis - 1.6L (1 Of 3) >> DTC P0122: Throttle Position Sensor 1 Signal Circuit Low Input >> Component Inspection
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Component Inspection

■ Check TPS performance 

  1. IG KEY "OFF".
  2. Connect CH A probe to signal terminal MAPS and CH B probe to signal terminal of TPS connector.
  3. Warm up the engine to normal operating temperature.
  4. Measure signal waveform of MAPS and TPS together by stepping on and off the accelerator pedal.

    Specification:  Refer to SIGNAL WAVEFORM & DATA 

    Fig 1: Screen Display - Signal Waveform Of MAPS And TPS
    G11796315Courtesy of KIA MOTORS AMERICA, INC.

■ Confirm Part Inspection 

  1. Does the TPS operate properly? (Check variation)

    YES 

    NO 

    • Substitute with a known-good TPS and check for proper operation. If the problem is corrected, replace TPS and then go to "Verification Of Vehicle Repair " procedure.