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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 >> Signal Circuit Inspection
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Signal Circuit Inspection

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

    Specification:  Infinite

    Fig 1: Measuring Resistance Between APS1 Signal Terminal Of APS Connector And Chassis Ground.
    G07272800Courtesy of HYUNDAI MOTOR CO.
  5. Is resistance within specification?

    YES 

    • Go to next procedure.

    NO 

  1. IG KEY OFF.
  2. Disconnect APS harness connector and PCM harness connector.
  3. Measure resistance between both ends of APS1 signal line.

    Specification:  Below 1Ω.

    Fig 2: Measuring Resistance Between Both Ends Of APS1 Signal Line.
    G07272801Courtesy of HYUNDAI MOTOR CO.
  4. Is resistance within specification?

    YES 

    • Go to next procedure.

    NO