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Home >> Hyundai >> 2012 >> Elantra GLS, Automatic Trans >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis (1 Of 2) >> DTC P0122: Throttle/Pedal Position Sensor/Switch A Circuit Low Input >> Inspection/Repair >> W/Harness Inspection >> Signal Circuit Inspection
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Signal Circuit Inspection

  1. IG KEY OFF.
  2. Disconnect ETC connector and PCM connector.
  3. Measure resistance between TPS1 signal terminal of ETC harness connector and chassis ground.

    Specification:  Infinite

    Fig 1: Measuring Resistance Between TPS1 Signal Terminal Of ETC Connector And Chassis Ground (1 Of 2)
    G07272260Courtesy of HYUNDAI MOTOR CO.
    Fig 2: Measuring Resistance Between TPS1 Signal Terminal Of ETC Connector And Chassis Ground (2 Of 2)
    G07272261Courtesy of HYUNDAI MOTOR CO.
  4. Is resistance within specification?

    YES 

    • Go to next procedure.

    NO 

  1. IG KEY OFF.
  2. Disconnect ETC connector and PCM connector.
  3. Measure resistance between both ends of TPS1 signal line.

    Specification:  Below 1Ω.

    Fig 3: Measuring Resistance Between Both Ends Of TPS1 Signal Line (1 Of 2)
    G07272262Courtesy of HYUNDAI MOTOR CO.
    Fig 4: Measuring Resistance Between Both Ends Of TPS1 Signal Line (2 Of 2)
    G07272263Courtesy of HYUNDAI MOTOR CO.
  4. Is resistance within specification?

    YES 

    • Go to next procedure.

    NO