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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 >> Signal Circuit Inspection
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Signal Circuit Inspection

  1. Ignition "ON" & Engine "OFF"
  2. Install Scantool and monitor the "MASS AIR FLOW (V)" parameter on the Scantool data list.

    Specification:  Approx. 0.1V

  3. Is "MASS AIR FLOW (V) 11 within specification?

    YES 

    NO 

    • Fault is intermittent caused by poor contact in the sensor's and/or ECM's connector or was repaired and ECM memory was not cleared. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.
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