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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

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