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Home >> Hyundai >> 2017 >> Sonata Base >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 32 (Engine Control System Diagnosis - 2.0L (1 Of 3) (Except HEV)) >> DTC P0123: Throttle Pedal Position Sensor Switch 'A' Circuit High Input >> Wiring Inspection >> Ground Circuit Inspection

Ground Circuit Inspection

WARNING: This page is about a different variant/trim than selected.

■ Check open in harness 

  1. IG "OFF". Disconnect ETC Motor & TPS connector and PCM connector.
  2. Measure resistance between both ends of TPS ground line.

    Specification:  below 1 Ω

    • During 'ETC Motor' test, TPS 1 and TPS 2 show symmetrical movements.
  3. Is resistance within specification?

    YES 

    • Go to next step below.

    NO