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Home >> Hyundai >> 2012 >> Elantra GLS, Automatic Trans >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis (2 Of 2) >> DTC P2122: Throttle/Pedal Position Sensor/Switch D Circuit Low Input >> Inspection/Repair >> W/Harness Inspection >> Power Circuit Inspection
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Power Circuit Inspection

  1. IG KEY OFF.
  2. Disconnect PCM and APS harness connector.
  3. IG KEY ON.
  4. Measure resistance between APS1 power terminal of APS harness connector and chassis ground.

    Specification:  Infinite

    Fig 1: Measuring Resistance Between APS1 Power Terminal Of APS Connector And Chassis Ground.
    G07272798Courtesy of HYUNDAI MOTOR CO.
  5. Is resistance within specification?

    YES 

    • Go to next procedure.

    NO 

  1. IG KEY OFF.
  2. Disconnect APS harness connector.
  3. IG KEY ON.
  4. Measure voltage between APS1 power terminal of APS harness connector and chassis ground.

    Specification:  Approx. 5V

    Fig 2: Measuring Voltage Between APS1 Power Terminal Of APS Connector And Chassis Ground.
    G07272799Courtesy of HYUNDAI MOTOR CO.
  5. Is voltage within specification?

    YES 

    • Go to next procedure.

    NO