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Home >> Hyundai >> 2009 >> Elantra GLS, Standard >> Repair and Diagnosis >> Engine Performance >> System >> DTC Troubleshooting Procedures >> DTC P0102 Mass Or Volume Air Flow Circuit Low Input >> Power Circuit Inspection
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Power Circuit Inspection

  1. Ignition "OFF"
  2. Disconnect MAF sensor connector
  3. Ignition "ON" & Engine "OFF"
  4. Measure voltage between terminal 2 of the sensor harness connector and chassis ground

    Specification:  Approx. B+

  5. Is voltage within the specification?

    YES 

    NO 

    • Check for an open or short to ground in the power supply circuit between the MAF sensor and main relay. Repair as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure
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