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HOMESERVICE MANUALSHYUNDAI2005SANTA FE GLS, 2.7 D, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 4 (ENGINE CONTROL SYSTEM DIAGNOSIS (3.5L) (1 OF 2))DTC TROUBLESHOOTING PROCEDURESDTC P0101: MASS OR VOLUME AIR FLOW CIRCUIT RANGE/PERFORMANCECOMPONENT INSPECTION
2005 Hyundai Santa Fe GLS, 2.7 D, AWD

Component Inspection

2005 Hyundai Santa Fe GLS, 2.7 D, AWDSECTION Component Inspection
WARNING: This page is about a different variant/trim than selected.
  1. Visual Inspection
    1. Check the MAFS for contamination, deterioration, or damage.
    2. Is the MAFS contaminated, deteriorated or damaged?

      YES 

      NO 

      • Go to next step .
  2. Check MAFS.
    1. Engine "ON"
    2. Connect Scan tool and select the "MAF SENSOR" parameter on the CURRENT DATA.
    3. Monitor signal waveform of the "MAF SENSOR" on the Scan tool.

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

      Fig 1: MAF Sensor Parameter On Current Data
      G03845381Courtesy of HYUNDAI MOTOR CO.
    4. Is the measured signal waveform of MAF sensor displaying correctly?

      YES 

      • Go to next step .

      NO 

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

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

  3. Check PCM
    1. Ignition "OFF"
    2. Connect Scan tool and Ignition "ON"
    3. Select simulation function on scan tool
    4. Simulate voltage at terminal 1 of MAF sensor signal connector.
      Fig 2: Displaying Scan Tool Simulation Function
      G03845382Courtesy of HYUNDAI MOTOR CO.
    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, or 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

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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.