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Home >> Hyundai >> 2006 >> Azera Limited >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis (1 Of 2) >> DTC Troubleshooting Procedures >> DTC P0300 Random/Multiple Cylinder Misfire Detected >> Monitor SCANTOOL Data
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Monitor SCANTOOL Data

  1. Is the power balance test done?

    YES 

    • If injector connector for power balance test is disconnect for over 46 sec, this can cause DTC relating to misfire. Stop the test and connect it and delete DTC and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.
    • If power balance test is finished within 46 sec, go to next procedure.

    NO 

    • Go to  2 "Monitor scantool data" as follows.
  2. Monitor scantool data
    1. Ignition "OFF"
    2. Connect Scantool and Engine "ON"
    3. Monitor parameters related to "Random Misfire Detected" on CURRENT DATA
      SCANTOOL DATA

      Ignition BTDC 10° ± 5°
      Idle speed N-range 720 ± 100 rpm
      D-range 650 ± 100 rpm
      Fig 1: Scan Tool Display - Current Data
      G04879831Courtesy of HYUNDAI MOTOR CO.
    4. Are the parameters related to "Random/Multi Misfire Detected" displayed correctly on Current Data ?

      YES 

      • Fault is intermittent caused by poor contact in the sensor' s and/or PCM' s connector or was repaired and PCM memory was not cleared. 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 

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