Noise Occurs

AUDIO / VISUAL: AUDIO AND VISUAL SYSTEM: Noise Occurs
- Noise Occurs

DESCRIPTION

The audio system emits unwanted noise, such as that caused by interference, static, or a damaged speaker.

INSPECTION PROCEDURE

PROCEDURE

1. NOISE CONDITION

(a) Check which direction the noise comes from (front left or right, rear left or right).

OK:

The location of the noise source can be determined.

NG -- CHECK NOISE CONDITIONS
OK -- Continue to next step.

2. CHECK SPEAKERS

(a) Check the installation conditions of the speaker units that are located near the noise source and that there are no cracks, scratches, deformation, or other problems.

Result





C -- REPLACE SPEAKER

B -- REMOVE FOREIGN OBJECT

A -- REINSTALL SPEAKER
D -- Continue to next step.

3. CHECK NOISE CONDITIONS

(a) Check the noise condition.

HINT
The radio has a noise prevention function to reduce noise when listening to the radio. If a loud noise occurs, check whether the ground at the antenna mounting base and the noise prevention unit are installed and wired correctly.





HINT
* In the chart's left column, find the situation that matches the customer's complaint. Then, in the right column, find the part that is causing the noise. Check the noise filter on the part.
* To save time and avoid a misdiagnosis, first make sure that the noise is not coming from outside the vehicle.
* Noise should be removed in descending order of loudness.
* Setting the radio to a frequency where no signal is received may make recognition of the noise problem easier.

OK:

The noise source cannot be determined.

NG -- REPAIR OR REPLACE NOISE SOURCE

OK -- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Problem Symptoms Table