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Home >> Infiniti >> 2004 >> M45 >> Repair and Diagnosis >> Engine Performance >> Engine Control System >> DTC P0507: ISC System >> Diagnostic Procedure >> 2. Check Intake Air Leak

2. Check Intake Air Leak

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  1. Start engine and let it idle.
  2. Listen for an intake air leak after the mass air flow sensor.

OK or NG 

  1. OK: GO TO 3.
  2. NG: Discover air leak location and repair.
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