Audio system sound is weak or distorted (display is normal) (With Navigation)

NOTE: 

• Check the vehicle 12 volt battery condition first .
• Check the connectors for poor connections or loose terminals.

1. Problem verification 1:

   - 1. Turn the vehicle to the ON mode.

   - 2. Go into the System Diagnostic Mode , and use the speaker check mode.

   Is there tone from the speakers, and is the tone quality normal in each channel?

   YES 

   Go to step 5. 5

   NO 

   The failure is duplicated, go to step 2.

2. Speaker visual check:

   - 1. Turn the vehicle to the OFF (LOCK) mode.

   - 2. Remove the speaker that is duplicating the failure, and check the speaker for any damage.

   Is there any damage?

   YES 

   Replace the speaker .

   NO 

   Go to step 3.

3. Determine possible failure area (audio-navigation unit, others):

   - 1. Disconnect the following connectors.

   NOTE:  Eject the disc before disconnecting the audio-navigation unit to prevent damaging the CD player's load mechanism.

   Audio-navigation unit connector A (24P)

   Left tweeter 2P connector

   Right tweeter 2P connector

   - 2. Measure the resistance between test points 1 and 2.

   Test condition	Vehicle OFF (LOCK) mode
   	Audio-navigation unit connector A (24P): disconnected
   	Left tweeter 2P connector: disconnected
   	Right tweeter 2P connector: disconnected

   Test point 1:Audio-navigation unit connector A (24P)	Test point 2:Audio-navigation unit connector A (24P)	Resistance
   No. 15	No. 16	About 4 Ω
   No. 19	No. 20	About 4 Ω
   No. 5	No. 6	About 4 Ω
   No. 9	No. 10	About 4 Ω

   Is the resistance OK?

   YES 

   Replace the audio-navigation unit .

   NO 

   Go to step 4.

4. Speaker check:

   - 1. Test the speaker(s) on the faulty speaker lines .

   Is the speaker(s) OK?

   YES 

   Repair a faulty SPKR wire(s) between the audio unit and the speaker(s).

   NO 

   Replace the speaker(s) .

5. Problem verification 2:

   - 1. Turn the vehicle to the OFF (LOCK) mode.

   - 2. Disconnect the following connectors.

   Left front door speaker 2P connector

   Right front door speaker 2P connector

   - 3. Turn the vehicle to the ON mode.

   - 4. Go into the System Diagnostic Mode , and use the speaker check mode.

   Is there tone from the tweeters, and is the tone quality normal in each channel?

   YES 

   Intermittent failure, the system is OK at this time. Check for loose connections at the audio-navigation unit and speakers.

   NO 

   The failure is duplicated, go to step 6.

6. Tweeter visual check:

   - 1. Turn the vehicle to the OFF (LOCK) mode.

   - 2. Remove the tweeter that is duplicating the failure, and check the tweeter for any damage.

   Is there any damage?

   YES 

   Replace the tweeter .

   NO 

   Go to step 7.

7. Tweeter check:

   - 1. Test the tweeter .

   Is the tweeter OK?

   YES 

   Repair an open or high resistance in the wire(s) between the audio-navigation unit and the tweeter.

   NO 

   Replace the tweeter .