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 ...

    Other materials:

    Engine control system symptoms
    Symptom Table SYSTEM — BASIC ENGINE CONTROL SYSTEM 1 - 6: The numbers refer to the order of inspection. (continued on next page) SYSTEM — ENGINE MECHANICAL & OTHER 1 - 6: The numbers refer to the order of inspection. ...

    ASCD Brake switch
    Description When the brake pedal is depressed, ASCD brake switch is turned OFF and stop lamp switch is turned ON. ECM detects the state of the brake pedal by those two types of input (ON/OFF signal). Refer to EC-1090, "System Diagram" for the ASCD function. Component Function C ...

    Vehicle load capacity
    Do not exceed the load limit of your vehicle shown as “The combined weight of occupants and cargo” on the Tire and Loading Information label. Do not exceed the number of occupants shown as “Seating Capacity” on the Tire and Loading Information label. To get “the combined weight of ...