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Home >> Hyundai >> 2004 >> 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 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. Engine "ON" & Warm up the engine to normal operating temperature.
  3. Monitor the "MAFS VOLTAGE" parameter on scantool.
    1. Specification:
      VOLTAGE SPECIFICATION

      Check Item Check Condition Test Specification
      MAFS output voltage Idle rpm 1.1~1.8V
      2100 rpm at WOT (D-range) 3.0~3.5 V

      Voltage increases in response to racing.

      Fig 1: Scantool Display MAFS Voltage Parameter - Sensor Data At Idle
      G07703402
      Fig 2: Scantool Display MAFS Voltage Parameter - Sensor Data At 2000 rpm
      G07703403
      Fig 3: Scantool Display MAFS Voltage Parameter - Sensor Data At 3000 rpm
      G07703404
      Fig 4: Scantool Display MAFS Voltage Parameter - Sensor Data At Open In Signal Circuit
      G07703405
  4. Is the MAF sensor parameter displayed 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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