LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Hyundai >> 2002 >> XG350 Base >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System Diagnosis (2 Of 2) >> Diagnostic Tests >> DTC P2123: Acceleration Position Sensor 1 Circuit High Input >> Scantool Diagnostics >> Monitor DTC Status
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Monitor DTC Status

  1. Connect scantool to Data Link Connector (DLC).
  2. Warm up the engine to normal operating temperature.
  3. Monitor the "TPS1", "TPS1", "APS1" and "APS2" parameter on the scantool.
    1. Specification:

      Approx. 0.3~1.0V at idle & No load (TPS1 or TPS ETS)

      Approx. 4.2~4.8V at idle & No load (TPS2 or TPS EMS)

      Approx. 0.3~1.0V at idle & No load (APS1 or APS ETS)

      Approx. 0.3~0.9V at idle & No load (APS2 or APS EMS)

      Fig 1: Scantool Screen Display - APS Signal Output With Throttle Valve Fully Closed
      G07326192Courtesy of HYUNDAI MOTOR CO.
      Fig 2: Scantool Screen Display - APS Signal Output With Throttle Valve
      G07326193Courtesy of HYUNDAI MOTOR CO.
  4. Is Current data displayed correctly?

    YES

    • Fault is intermittent caused by poor contact in the related sensor's and/or ETS unit connector or was repaired and PCM memory was not cleared. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.

    NO

scientia non olet · About LEMON Manuals