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Home >> Kia >> 2019 >> Optima EX >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System Diagnosis - 1.6L (5 Of 6) (Except HEV) >> DTC P2127: Throttle/Pedal Position Sensor/Switch 'E' Circuit Low Input >> Wiring Inspection >> Ground Circuit Inspection

Ground Circuit Inspection

  1. Ignition "OFF" and disconnect APS connector.
  2. Ignition "ON"
  3. Measure voltage between Pin No. 5 (power) terminal APS harness connector and chassis ground.(A)
  4. Measure voltage between Pin No. 5 (power) terminal and Pin No. 1 (Ground) terminal of the APS.(B)

    Specification:  "A" - "B" = Below 200mV

  5. Is the measured voltage within specification?

    YES 

    NO 

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