Nissan Altima 2007-2012 Service Manual: Function diagnosis

NOISE, VIBRATION, AND HARSHNESS (NVH) TROUBLESHOOTING

NVH Troubleshooting - Engine Noise

1. Camshaft bearing noise

2. Piston pin noise

3. Piston slap noise

4. Main bearing noise

5. Connecting rod bearing noise

6. Drive belt noise (Sticking/Slipping)

7. Drive belt noise (Slipping)

8. Water pump noise

9. Timing chain and chain tensioner noise

10. Tappet noise

A. Valve

B. Valve mechanism

C. Rotation mechanism

D. Drive belt

E. Timing chain

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. Repair or replace the identified part as necessary.

A: Closely related

B: Related

C: Sometimes related —: Not related

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

    Other materials:

    Power supply and ground circuit
    SUNROOF MOTOR ASSEMBLY  Description • BCM supplies power. • CPU is integrated in sunroof motor assembly. • Tilts up/down & slides open/close by sunroof switch operation. • In order to close sunroof lid certainly with the signal from combination meter at the time of hig ...

    Main line between DLC and ABS circuit
    Diagnosis Procedure INSPECTION PROCEDURE 1.CHECK CONNECTOR 1. Turn the ignition switch OFF. 2. Disconnect the battery cable from the negative terminal. 3. Check the following terminals and connectors for damage, bend and loose connection (connector side and harness side). - Harness co ...

    POWER supply and ground circuit
    BCM Diagnosis Procedure 1. CHECK FUSE AND FUSIBLE LINK Check if the following BCM fuse or fusible link are blown. Is the fuse or fusible link blown? YES >> Replace the blown fuse or fusible link after repairing the affected circuit. NO >> GO TO 2 2. CHECK POWER SUPPLY CIRC ...