Diagnosis Procedure

WARNING: This page is about a different car, the 2013 Infiniti M56. However, it is still accessible from the selected car via links, so may be relevant.

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.
REPLACE ECM
1. Stop engine.
2. Replace ECM. Refer to "REMOVAL AND INSTALLATION ".
3. Perform additional service when replacing ECM. Refer to "WORK PROCEDURE ".
  : INSPECTION END