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Home >> Hyundai >> 2003 >> Santa Fe Base, Standard >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System Diagnosis (3.5L) (1 Of 2) >> Troubleshooting For DTC >> DTC P0103: Mass Air Flow Circuit High Input >> Scantool Diagnostics >> Monitor Scantool Data
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Monitor Scantool Data

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

    Check Item Check Condition Test Specification
    MAFS output voltage Idle rpm 1.1~1.8V
    2100 rpm at WOT (D-range) 3.0~3.5V
    Fig 1: Scantool Display MAFS Voltage Parameter - Sensor Data At Idle
    G07703414
    Fig 2: Scantool Display MAFS Voltage Parameter - Sensor Data At 2000 rpm
    G07703415
    Fig 3: Scantool Display MAFS Voltage Parameter - Sensor Data At 3000 rpm
    G07703416
    Fig 4: Scantool Display MAFS Voltage Parameter - Sensor Data At Open In Signal Circuit
    G07703417
  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

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