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Home >> Hyundai >> 2004 >> Elantra GLS, Automatic >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Fuel System >> DTC Trouble Shooting Procedures >> DTC P0123: Throttle Position Sensor Circuit High Input >> Inspection Procedures >> 4. Check Power To TPS
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4. Check Power To TPS

  1. Turn ignition switch to ON position
  2. Measure TPS voltage between terminal 3 of the TPS harness connector and chassis ground.
    Fig 1: Checking TPS Power Supply
    G00749208Courtesy of HYUNDAI MOTOR CO.
    • Specification: approximately 5 V 

Is voltage within specification? 

Yes: Go to next step.

No: Repair open or short to chassis ground in harness.