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Home >> Hyundai >> 2017 >> Sonata Base >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 34 (Engine Control System Diagnosis - 1.6L (1 Of 3) (Except HEV)) >> DTC P0123: Throttle Position Sensor 1 Signal Circuit High Input >> Wiring Inspection >> Ground Circuit Inspection

Ground Circuit Inspection

WARNING: This page is about a different variant/trim than selected.
  1. IG "OFF".
  2. Disconnect ETC Motor & TPS connector.
  3. IG "ON" & ENG "OFF".
  4. Measure voltage between TPS1 power terminal of ETC Motor & TPS harness connector and chassis ground. (Measurement "A")
  5. Measure voltage between TPS1 power and TPS1 ground terminals of ETC Motor & TPS harness connector.(Measurement "B")

    Specification:  Voltage difference between measurement "A" and "B" is below 200mV.

  6. Is the measured voltage within specification?

    YES 

    NO