SOUND DISTORTS OR TOO LOUD [CAR-NAVIGATION SYSTEM (DISPLAY-INTEGRATED TYPE)]

id0903l4103700

Description

Sound distorts or it is too loud, or noise occurs

POSSIBLE CAUSE

•  Radio wave interference from a commercially-available electrical device (such as radio set, TV, car-navigation, or mobile phone)

•  Improper installation of speaker

•  Door trim vibration

•  Speaker malfunction (such as foreign matter adhering, damage)

•  Noise occurring from vehicle electrical device (such as generator)

•  Car-navigation unit malfunction

Description	Sound distorts or it is too loud, or noise occurs
POSSIBLE CAUSE	• Radio wave interference from a commercially-available electrical device (such as radio set, TV, car-navigation, or mobile phone) • Improper installation of speaker • Door trim vibration • Speaker malfunction (such as foreign matter adhering, damage) • Noise occurring from vehicle electrical device (such as generator) • Car-navigation unit malfunction

Note

• “iPod” is a registered trademark of Apple Inc. in the United States and other countries.

Diagnostic Procedure

Step

Inspection

Action

1

VERIFY MALFUNCTION SYMPTOM

•  Verify the malfunction symptom in all modes.

•  Does the malfunction occur in only radio mode?

Yes

Go to the next step.

No

Go to Step 5.

2

VERIFY RECEPTION CONDITION

•  Tune radio frequency to a local radio station and verify the reception condition.

•  Is the reception condition normal?

Yes

Go to the next step.

No

Move the vehicle to a good reception area and verify the malfunction symptom.

3

VERIFY LOCATION WHERE MALFUNCTION OCCURS

•  Can the location where the malfunction occurs be specified?

Yes

System is normal (explain to the customer that the noise is caused by radio wave interference or external broadcast wave conditions).

No

Go to the next step.

4

VERIFY IF MALFUNCTION CAUSE IS ANTENNA

•  Inspect the antenna feeder and antenna amplifier.
(See ANTENNA FEEDER NO.1 INSPECTION.)

(See ANTENNA FEEDER NO.2 INSPECTION.)

(See ANTENNA AMPLIFIER INSPECTION.)

•  Are the antenna feeder and antenna amplifier normal?

Yes

Go to Step 10.

No

Replace the malfunctioning part.

(See ANTENNA FEEDER NO.1 REMOVAL/INSTALLATION.)

(See ANTENNA FEEDER NO.2 REMOVAL/INSTALLATION.)

(See ANTENNA AMPLIFIER REMOVAL/INSTALLATION.)

5

VERIFY IF MALFUNCTION CAUSE IS MUSIC DEVICE

•  Replace the music device such as a USB device or iPod with a music device not used when the malfunction occurred.

•  Has the malfunction been eliminated?

Yes

Explain to the customer that the cause is the music device such as a UBS device or iPod.

No

Go to the next step.

6

VERIFY SPEAKER INSTALLATION CONDITION

•  Inspect the speaker installation condition.

•  Is the installation condition normal?

Yes

Go to the next step.

No

Repair the speaker installation.

7

VERIFY SPEAKER

•  Remove the speaker.

•  Is there foreign matter penetration, adhering, or damage to the speaker?

Yes

Repair or replace the malfunctioning location.

No

Go to the next step.

8

VERIFY IF MALFUNCTION CAUSE IS DOOR TRIM VIBRATION

•  Verify the sound distortion with the speaker removed.

•  Is there sound distortion?

Yes

Go to the next step.

No

Inspect for vibration from the door trim. If vibration occurrence can be verified, repair or replace the malfunctioning part.

9

DETERMINE IF MALFUNCTION CAUSE IS SPEAKER

•  Replace (replace left and right speakers) with speakers having no distortion and verify the malfunction symptom.

•  Does the sound distortion occur from the speaker at the same location before the replacement?

Yes

Replace the car-navigation unit.

(See TBD.)

No

Replace the speaker.

(See FRONT DOOR SPEAKER REMOVAL/INSTALLATION.)

(See REAR DOOR SPEAKER REMOVAL/INSTALLATION.)

(See FRONT CENTER SPEAKER REMOVAL/INSTALLATION.)

(See FRONT SIDE SPEAKER REMOVAL/INSTALLATION.)

(See REAR SPEAKER REMOVAL/INSTALLATION.)

(See TWEETER REMOVAL/INSTALLATION.)

10

VERIFY IF COMMERCIALLY-AVAILABLE ELECTRICAL DEVICE IS INSTALLED

•  Has a commercially-available electrical device (such as radio set, TV, car-navigation, or mobile phone) been installed

Yes

Go to the next step.

No

Go to Step 13.

11

VERIFY IF MALFUNCTION CAUSE IS COMMERCIALLY-AVAILABLE ELECTRICAL DEVICE

•  Remove the installed electrical device.

•  Turn the car-navigation unit power on and verify the reception condition again.

•  Has the malfunction symptom been eliminated?

Yes

The system is normal (explain to the customer that the cause is the commercially-available electrical device).

No

Go to the next step.

12

VERIFY IF MALFUNCTION CAUSE IS VEHICLE ELECTRICAL DEVICE

•  Does a malfunction occur while a vehicle electrical device such as the generator is operating?

Note

•  Remove the fuse and specify the electrical device in which noise occurs when switched on/off or connector insertion/removal.

Yes

Replace the electrical device which a malfunction occurs.

No

Replace the car-navigation unit.

(See CAR-NAVIGATION UNIT REMOVAL/INSTALLATION.)

(See CAR-NAVIGATION UNIT DISASSEMBLY/ASSEMBLY.)

Step	Inspection		Action
1	VERIFY MALFUNCTION SYMPTOM • Verify the malfunction symptom in all modes. • Does the malfunction occur in only radio mode?	Yes	Go to the next step.
1		No	Go to Step 5.
2	VERIFY RECEPTION CONDITION • Tune radio frequency to a local radio station and verify the reception condition. • Is the reception condition normal?	Yes	Go to the next step.
2		No	Move the vehicle to a good reception area and verify the malfunction symptom.
3	VERIFY LOCATION WHERE MALFUNCTION OCCURS • Can the location where the malfunction occurs be specified?	Yes	System is normal (explain to the customer that the noise is caused by radio wave interference or external broadcast wave conditions).
3		No	Go to the next step.
4	VERIFY IF MALFUNCTION CAUSE IS ANTENNA • Inspect the antenna feeder and antenna amplifier. (See ANTENNA FEEDER NO.1 INSPECTION.) (See ANTENNA FEEDER NO.2 INSPECTION.) (See ANTENNA AMPLIFIER INSPECTION.) • Are the antenna feeder and antenna amplifier normal?	Yes	Go to Step 10.
4		No	Replace the malfunctioning part. (See ANTENNA FEEDER NO.1 REMOVAL/INSTALLATION.) (See ANTENNA FEEDER NO.2 REMOVAL/INSTALLATION.) (See ANTENNA AMPLIFIER REMOVAL/INSTALLATION.)
5	VERIFY IF MALFUNCTION CAUSE IS MUSIC DEVICE • Replace the music device such as a USB device or iPod with a music device not used when the malfunction occurred. • Has the malfunction been eliminated?	Yes	Explain to the customer that the cause is the music device such as a UBS device or iPod.
5		No	Go to the next step.
6	VERIFY SPEAKER INSTALLATION CONDITION • Inspect the speaker installation condition. • Is the installation condition normal?	Yes	Go to the next step.
6		No	Repair the speaker installation.
7	VERIFY SPEAKER • Remove the speaker. • Is there foreign matter penetration, adhering, or damage to the speaker?	Yes	Repair or replace the malfunctioning location.
7		No	Go to the next step.
8	VERIFY IF MALFUNCTION CAUSE IS DOOR TRIM VIBRATION • Verify the sound distortion with the speaker removed. • Is there sound distortion?	Yes	Go to the next step.
8		No	Inspect for vibration from the door trim. If vibration occurrence can be verified, repair or replace the malfunctioning part.
9	DETERMINE IF MALFUNCTION CAUSE IS SPEAKER • Replace (replace left and right speakers) with speakers having no distortion and verify the malfunction symptom. • Does the sound distortion occur from the speaker at the same location before the replacement?	Yes	Replace the car-navigation unit. (See TBD.)
9		No	Replace the speaker. (See FRONT DOOR SPEAKER REMOVAL/INSTALLATION.) (See REAR DOOR SPEAKER REMOVAL/INSTALLATION.) (See FRONT CENTER SPEAKER REMOVAL/INSTALLATION.) (See FRONT SIDE SPEAKER REMOVAL/INSTALLATION.) (See REAR SPEAKER REMOVAL/INSTALLATION.) (See TWEETER REMOVAL/INSTALLATION.)
10	VERIFY IF COMMERCIALLY-AVAILABLE ELECTRICAL DEVICE IS INSTALLED • Has a commercially-available electrical device (such as radio set, TV, car-navigation, or mobile phone) been installed	Yes	Go to the next step.
10		No	Go to Step 13.
11	VERIFY IF MALFUNCTION CAUSE IS COMMERCIALLY-AVAILABLE ELECTRICAL DEVICE • Remove the installed electrical device. • Turn the car-navigation unit power on and verify the reception condition again. • Has the malfunction symptom been eliminated?	Yes	The system is normal (explain to the customer that the cause is the commercially-available electrical device).
11		No	Go to the next step.
12	VERIFY IF MALFUNCTION CAUSE IS VEHICLE ELECTRICAL DEVICE • Does a malfunction occur while a vehicle electrical device such as the generator is operating? Note • Remove the fuse and specify the electrical device in which noise occurs when switched on/off or connector insertion/removal.	Yes	Replace the electrical device which a malfunction occurs.
12		No	Replace the car-navigation unit. (See CAR-NAVIGATION UNIT REMOVAL/INSTALLATION.) (See CAR-NAVIGATION UNIT DISASSEMBLY/ASSEMBLY.)