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HOMESERVICE MANUALSHYUNDAI2014SANTA FE XL PREMIUMREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMENGINE CONTROL SYSTEM DIAGNOSIS (1 OF 3)DTC P0121: THROTTLE POSITION SENSOR 1 SIGNAL CIRCUIT RANGE/PERFORMANCECOMPONENT INSPECTION
2014 Hyundai Santa Fe XL Premium

Component Inspection

2014 Hyundai Santa Fe XL PremiumSECTION Component Inspection
  • Check TPS 
    1. IG "ON"
    2. Monitor signal waveform and output voltage of TPS by stepping on and off the accelerator pedal in GDS.
      VOLTAGE SPECIFICATION

      Throttle Opening (°) Output Voltage (V) [Vref=5.0]
      TPS1 TPS2
      0 0.5 4.5
      10 0.96 4.05
      20 1.41 3.59
      30 1.87 3.14
      40 2.32 2.68
      50 2.78 2.23
      60 3.23 1.77
      70 3.69 1.32
      80 4.14 0.86
      90 4.6 0.41
      98 4.65 0.35
      C.T (0) 0.5 4.5
      W.O.T (86) 4.41 0.59
      Fig 1: Display - Normal Waveform Of TPS1 & TPS2 (With Acceleration Pedal Not Depressed And IG ON)
      G09272963Courtesy of HYUNDAI MOTOR AMERICA
RENDER: 1.0x

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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.