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Home >> Kia >> 2019 >> Optima S >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System Diagnosis (5 Of 6) (PHEV) >> DTC P2123-00: Accelerator Position Sensor 1 Signal Circuit High Input >> Wiring Inspection >> APS 1 Circuit Inspection >> Power Circuit Inspection
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Power Circuit Inspection

  1. Ignition "OFF"
  2. Refer to ACCELERATOR POSITION SENSOR (APS) "service information" and disconnect Accel Pedal Position Sensor connector.
  3. Ignition "ON"
  4. Measure voltage between Pin No. 4 (Power) terminal of Accel Pedal Position Sensor harness connector and chassis ground.

    Specification:  Approx. 5V

  5. Is measured value within specification?

    YES 

    NO