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Home >> Hyundai >> 2014 >> Accent GLS, Standard Trans >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis (1 Of 2) >> DTC P0123: Throttle Position Sensor 1 Signal Circuit High Input >> Wiring Inspection >> Ground Circuit Inspection

Ground Circuit Inspection

  1. IG "OFF" and disconnect ECTS connector and then IG "ON".
  2. Measure voltage between TPS1 power terminal of ETC Motor & TPS harness connector and chassis ground. (Measurement "A")
  3. 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

  4. Is the measured voltage within specification?

    YES 

    NO 

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