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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 P0103: MASS OR VOLUME AIR FLOW CIRCUIT HIGH INPUTCOMPONENT 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. Ignition "OFF" & Connect Scan tool
    2. Engine "ON" & monitor 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: Scan Tool Data Parameter And Wave Form Signal Graph
      G03845396Courtesy 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 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 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: Scan Tool Data Parameter And Wave Form Signal Graph
      G03845397Courtesy 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

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.