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Home >> Hyundai >> 2003 >> XG350 Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis (2 Of 2) >> Diagnostic Tests >> DTC P2127: Acceleration Position Sensor 2 Circuit Low Input >> Scantool Diagnostics >> Monitor DTC Status
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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 Display - APS Signal Output With Throttle Valve Fully Closed
    G07378333
    Fig 2: Scantool Display - APS Signal Output With Throttle Valve Fully Open
    G07378334
  4. Is Current data displayed correctly?

    YES

    • Fault is intermittent caused by poor contact in the related sensor's and/or PCM 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

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