Diagnosis Procedure

WARNING: This page is about a different car, the 2012 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.

CHECK PCV HOSE CONNECTION
Confirm that PCV hose is connected correctly.

OK or NG

OK: GO TO 2.

NG: Repair or replace malfunctioning part.
CHECK INTAKE AIR LEAKAGE
1. Start engine and let it idle.
2. Listen for an intake air leakage after the mass air flow sensor.
OK or NG

OK: GO TO 3.

NG: Discover air leakage location and repair.
REPLACE ECM
1. Stop engine.
2. Replace ECM.
3. Perform initialization of NVIS(NATS) system and registration of all NVIS(NATS) ignition key IDs. Refer to "ECM RE-COMMUNICATING FUNCTION: SPECIAL REPAIR REQUIREMENT " (with intelligent key system) or "ECM RE-COMMUNICATING FUNCTION: SPECIAL REPAIR REQUIREMENT " (without intelligent key system).
4. Perform "VIN REGISTRATION ".
5. Perform "ACCELERATOR PEDAL RELEASED POSITION LEARNING ".
6. Perform "THROTTLE VALVE CLOSED POSITION LEARNING ".
7. Perform "IDLE AIR VOLUME LEARNING ".
>> INSPECTION END