Noise Occurs

NAVIGATION: NAVIGATION SYSTEM: Noise Occurs
- Noise Occurs

INSPECTION PROCEDURE

PROCEDURE

1. NOISE CONDITION

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

(1) Check from which direction the noise comes.

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 failures.

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 respective noise filter.
* To save time and avoid a misdiagnosis, first make sure that the noise is not coming from outside the vehicle.
* Troubleshoot noises 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 CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE Symptom Related Diagnostic Procedures