Nissan Altima 2007-2012 Service Manual: Normal operating condition


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


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)

    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:

    Fuel pressure
    Inspection FUEL PRESSURE RELEASE 1. Turn ignition switch ON. 2. Perform “FUEL PRESSURE RELEASE” in “WORK SUPPORT” mode with CONSULT-III. 3. Start engine. 4. After engine stalls, crank it two or three times to release all fuel pressure. 5. Turn ignition switch OFF. 1. Re ...

    P0500 VSS
    Description The vehicle speed signal is sent to the combination meter from the “ABS actuator and electric unit (control unit)” by CAN communication line. The combination meter then sends a signal to the ECM by CAN communication line. DTC Logic DTC DETECTION LOGIC NOTE: • If DTC P0 ...

    Audio antenna (coupe)
    Location of Antenna 1. In-line connectors M87, M501 2. AV control unit harness 3. AV control unit 4. Satellite antenna 5. AV control unit antenna feeder 6. Satellite radio antenna feeder 7. Window Antenna 8. Antenna amp. 9. Satellite radio tuner Window Antenna Repair ELEMENT CHECK 1. ...