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Home >> Hyundai >> 2005 >> XG350 Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis (1 Of 2) >> Trouble Shooting For DTC >> DTC P0102: Mass Air Flow Circuit Low Input >> Scantool Diagnostics >> Monitor Scantool Data
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Monitor Scantool Data

  1. Connect scantool to Data Link Connector (DLC).
  2. Warm up the engine to normal operating temperature.
  3. Monitor the "MAF VOLTAGE" parameter on scantool.

    Specification:

    Approx. 0~2V at idle

    Fig 1: Screen Display - MAF Voltage Parameter (Sensor Data At Idle)
    G07374916
    Fig 2: Screen Display - MAF Voltage Parameter (Sensor Data At 2000 RPM)
    G07374917
    Fig 3: Screen Display - MAF Voltage Parameter (Sensor Data At 3000 RPM)
    G07374918
    Fig 4: Screen Display - MAF Voltage Parameter (Sensor Data At Open In Signal Circuit)
    G07374919
  4. Is the measured sensor's signal within specifications?

    YES

    • Fault is intermittent caused by poor contact in the sensor's and/or PCM's 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 go to "VERIFICATION OF VEHICLE REPAIR " procedure.

    NO