Hyundai Kona: AVN System / Speaker Repair procedures

Inspection
1.
Troubleshooting for Speaker
(1)
Basic inspection of speaker
Inspect the sound from speaker after verifying that the speaker mounting screws is removed and the wiring connector is connected precisely to remove vibration transmitted from body trims and surrounding parts.

(2)
Case Troubleshooting
No
Case
Inspection/Remedy
1
Trembling sound
1)
Before replacing the speaker, inspect that the mounting screw is installed normally.
2)
After re-installing the speaker, verify that no trembling sound is heard.
3)
When hearing a trembling sound again, replace the speaker with new one.
2
Noise
1)
Check if the wiring connector is connected normally. If not, reconnect the wiring connector.
2)
In case of radio static, check if there is a noise from CD player.
3)
When a noise is heard on turning radio and CD on, replace the speaker with new one.
  
In case there is only radio static, this causes from poor radio reception. Thus the speaker needs no repair and replacement.
3
Poor working
Inspection of the wiring connection between the battery and the speaker
1)
Before replacing the speaker, inspect the wiring and connections in the speaker circuit.
2)
Check the supplying power to the speaker and the resistance, and then inspect the sound quality.

3)
If the speaker works poorly, replace it with new one.

  
During dealing of speaker
Dropping or rough handling of the speaker can cause damage.
Be careful not to cover water and oil over the speaker.
Caution during dealing of speaker because the material of diaphragm is paper which is easy to be torn by impact and external force.
When modifying audio system as customer pleases, this does electric damage to speaker.
And, in this case the speakers are not covered by the manufacturer's warranty.
Removal
[Front Door Speakers]
1.
Disconnect the negative (-) battery terminal.
2.
Remove the front door trim.
(Refer to Body - "Front Door Trim")
3.
Remove the front door speaker (B) after disconnecting the connector (A) and loosening the screws.

[Front Door Tweeter Speaker]
1.
Disconnect the negative (-) battery terminal.
2.
Remove the front door trim.
(Refer to Body - "Front Door Trim")
3.
Remove the tweeter speaker (A) after loosening the screws.

[Rear Door Speakers ]
1.
Disconnect the negative (-) battery terminal.
2.
Remove the rear door trim.
(Refer to Body - "Rear Door Trim")
3.
Remove the rear door speaker (B) after disconnecting the connector (A) and loosening the screws.

[Crash Pad Center Speaker]
  
Take care not to scratch the crash pad and related parts.
1.
Using a screwdriver or remover, remove the crash pad center speaker grille (A).

2.
Remove the center speaker (A) after disconnect the connector and loosening the screws.

[Sub Woofer Speaker]
1.
Disconnect the negative (-) battery terminal.
2.
Remove the tailgate luggage side trim.
(Refer to Body - " Luggage Side Trim")
3.
Remove the sub woofer speaker (A) after disconnect the connector (B) and loosening the nuts.

Installation
Front Door Speaker
1.
Install the front door speaker.
2.
Install the front door trim.
3.
Connect the negative (-) battery terminal.
Front Door Tweeter Speakers
1.
Install the front door tweeter speaker.
2.
Install the front door trim.
3.
Connect the negative (-) battery terminal.
Rear Door Speaker
1.
Install the rear door speaker.
2.
Install the front door trim.
3.
Connect the negative (-) battery terminal.
  
Make sure the speaker connectors are plugged in properly.
Crash Pad Center Speaker
1.
Install the center speaker.
2.
Install the center speaker grille.
Sub Woofer Speaker
1.
Install the subwoofer speaker.
2.
Install the liggage side trim.
AVN Antenna Repair procedures
Removal Roof Antenna 1. Disconnect the negative (-) battery terminal. 2. Remove the roof trim assembly. (Refer to Body - " ...

AUX jack Schematic diagrams
Circuit Diagram ...

Other information:

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Hyundai Kona (OS) 2018-2020 Service Manual: CVVT & Camshaft Components and components location
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