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Home >> Nissan-Datsun >> 2014 >> Maxima SV >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS P0196 To P0607 >> DTC P0506: ISC System >> Diagnosis Procedure
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Diagnosis Procedure

  1. CHECK INTAKE AIR LEAKAGE 
    1. Start engine and let it idle.
    2. Listen for an intake air leakage after the mass air flow sensor.

      Is intake air leakage detected? 

      YES: Discover air leakage location and repair.

      NO: GO TO 2.

  2. REPLACE ECM 
    1. Stop engine.
    2. Replace ECM.
    3. Go to "ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT: SPECIAL REPAIR REQUIREMENT ".

      : INSPECTION END

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