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HOMESERVICE MANUALSHYUNDAI2002SANTA FE BASE, AUTOMATICREPAIR AND DIAGNOSISENGINE PERFORMANCETESTING & DIAGNOSISENGINE CONTROLS - SELF-DIAGNOSTICS - 2.4LDIAGNOSTIC TESTSDTC P0102: MASS OR VOLUME AIR FLOW CIRCUIT LOW INPUTINSPECTION/REPAIRCOMPONENT INSPECTION
2002 Hyundai Santa Fe Base, Automatic

Component Inspection

2002 Hyundai Santa Fe Base, AutomaticSECTION Component Inspection
  1. Visual Inspection.
    1. Check the MAF for contamination, deterioration, or damage.
    2. Is the MAF contaminated, deteriorated or damaged?

      YES

      NO

      • Go to " 2 Check MAF" as below.
  2. Check MAFS.
    1. Engine "ON".
    2. Connect Scantool and select the "MAF SENSOR" parameter on the CURRENT DATA.
    3. Monitor signal waveform of the "MAF SENSOR" on the Scantool.

      Specification: Check that MAF value is increased correspondingly with TPS when pressing accelerator pedal.

      Fig 1: MAF Sensor Signal Waveform
      G07324446
    4. Is the measured signal waveform of MAF sensor displaying correctly?

      YES

      • Go to " 3 Check PCM" as below.

      NO

      • Substitute with a known - good MAF and check for proper operation.
      • If the problem is corrected, replace MAF and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
  3. Check PCM.
    1. Ignition "OFF".
    2. Connect Scantool and Ignition "ON".
    3. Select simulation function on scantool.
    4. Simulate voltage at terminal 1 of MAF sensor signal connector.
      Fig 2: Scan Tool Screen Display - MAF Sensor Simulation Of Voltage (2.50 V)
      G07324447
    5. Does the signal value of MAF sensor changes according to simulation voltage?

      YES

      • Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration damage. Repair or replace as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.

      NO

      • Substitute with a known - good PCM and check for proper operation.

        If the problem is corrected, replace PCM and go to "VERIFICATION OF VEHICLE REPAIR " procedure.

RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.