Mazda 1996 626, Руководство по обслуживанию

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AUDIO
(2) Ambient noise
1. Fading (AM radio)
Fading occurs when AM sound waves, which are reflected by the ionosphere during transmission,
are obstructed.
2. Fast fading and multipath noise (FM radio)
Fast fading occurs when FM sound waves are obstructed by mountains or buildings.
Multipath noise occurs when the radio on a vehicle picks up a direct wave and a reflected wave at
the same time.
(3) Vehicle-induced noise
Name of noise
Condition
Noise when engine is
started
Fuel pump noise
Noise occurs immediately after ignition switch is turned to ON
Ignition noise Consecutive noise
Tone changes when acceleration pedal is depressed
Alternator noise Whizzing noise occurs when acceleration pedal is depressed
Noise when electrical
parts are operated
W iper motor noise Howling noise occurs synchronized with w iper operation
W asher motor noise Noise occurs when window w asher is operated
Power window noise Noise occurs when power window is operated
Fan motor noise Noise occurs when fan is operated
Brake noise Noise occurs at beginning or end of brake operation
Turn signal noise
Clicking noise occurs synchronized with signal flash
Horn switch noise W hizzing noise occurs when acceleration pedal is depressed
Air conditioner noise Howling noise occurs when air conditioner is operated
Although it is difficult to eliminate these noises, they can
be reduced by installing a noise suppressor or noise-pre-
ventive capacitor near the electrical system which emits
the noise current. For example, to reduce wiper motor
noise, install the noise preventive capacitors near the
wiper motor. If the noise preventive device does not work,
check for a proper ground connection.
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