Nissan Altima 2007-2012 Service Manual: Normal operating condition

Description

The majority of the audio concerns are the result of outside causes (bad CD, electromagnetic interference, etc.).

NOISE

The following noise results from variations in field strength, such as fading noise and multi-path noise, or external noise from trains and other sources. It is not a malfunction.

• Fading noise: This noise occurs because of variations in the field strength in a narrow range due to mountains or buildings blocking the signal.

• Multi-path noise: This noise results from the waves sent directly from the broadcast station arriving at the antenna at a different time from the waves which reflect off mountains or buildings.

The vehicle itself can be a source of noise if noise prevention parts or electrical equipment is malfunctioning.

Check if noise is caused and/or changed by engine speed, ignition switch turned to each position, and operation of each piece of electrical equipment, and determine the cause.

NOTE: The source of the noise can be found easily by listening to the noise while removing the fuses of electrical components, one by one.

Type of Noise and Possible Cause

    Audio system (sedan)
    Symptom Table AUDIO SYSTEM CD SATELLITE RADIO HANDS-FREE PHONE ...

    Precaution
    Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT PRE-TENSIONER" The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used alo ...

    Other materials:

    Oil seal
    Removal and Installation of Valve Oil Seal REMOVAL 1. Turn crankshaft until the cylinder requiring new oil seals is at TDC. This will prevent valve from dropping into cylinder. CAUTION: When rotating crankshaft, be careful to avoid scarring the front cover with the timing chain. 2. Remove ...

    Rear LH
    Description Door glass moves UP/DOWN by receiving the signal from main power window and door lock/unlock switch or rear power window switch LH.  Component Function Check 1. CHECK REAR POWER WINDOW MOTOR LH CIRCUIT Does rear power window motor LH operate with main power window and door ...

    Front wiper and washer system
    System Diagram System Description OUTLINE The front wiper is controlled by each function of BCM and IPDM E/R. Control by BCM • Combination switch reading function • Front wiper control function Control by IPDM E/R • Front wiper control function • Relay control function FRONT WIP ...