Nissan Altima 2007-2012 Service Manual: Function diagnosis

NOISE, VIBRATION, AND HARSHNESS (NVH) TROUBLESHOOTING

NVH Troubleshooting - Engine Noise

Use the Chart Below to Help You Find the Cause of the Symptom

1. Locate the area where noise occurs.

2. Confirm the type of noise.

3. Specify the operating condition of engine.

4. Check specified noise source.

If necessary, repair or replace these parts.

    Preparation
    Special Service Tool The actual shapes of the Kent-Moore tools may differ from those of the special service tools illustrated here. Commercial Service Tool ...

    On-vehicle maintenance
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    Other materials:

    Microphone
    Diagnosis Procedure 1.CHECK POWER SUPPLY CIRCUIT (MICROPHONE SIDE) Check voltage between microphone harness connector and ground. Is proper voltage present? YES >> GO TO 4 NO >> GO TO 2 2.CHECK POWER SUPPLY CIRCUIT (CONTINUITY) 1. Turn ignition switch OFF. 2. Disconnect mic ...

    Air breather hose
    Exploded View 1. Clip 2. Air cleaner case 3. Transaxle assembly 4. Clip 5. Air breather hose A. Set paint mark and clip at front side 1. Air cleaner case 2. Transaxle assembly 3. Clip 4. Air breather hose 5. Clip A. Set paint mark and clip at front side Removal and Installation ...

    Evaporative emission system
    System Diagram EVAPORATIVE EMISSION LINE DRAWING 1. Intake manifold collector 2. EVAP service port 3. EVAP canister purge volume control solenoid valve A. From next figure 1. EVAP control system pressure sensor 2. EVAP canister vent control valve 3. EVAP canister A. To previous figu ...