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Nissan Xterra. Manual - part 12

AV-40

< SYMPTOM DIAGNOSIS >

[BASE AUDIO]

AUDIO SYSTEM

SYMPTOM DIAGNOSIS

AUDIO SYSTEM

Symptom Table

INFOID:0000000010247125

AUDIO SYSTEM

Symptoms

Check items

Probable malfunction location

The disk cannot be removed.

Audio unit

Malfunction in audio unit.
Refer to

AV-48, "Removal and Installation"

No sound comes out or the level of the
sound is low.

No sound from all speakers.

• Speaker circuit shorted to ground.

Refer to

AV-14, "Wiring Diagram"

• Audio unit power supply and ground cir-

cuits malfunction.
Refer to

AV-27, "AUDIO UNIT : Diagno-

sis Procedure"

Only a certain speaker (front tweeter LH,
front tweeter RH, front door speaker LH,
front door speaker RH, rear door speaker
LH, rear door speaker RH) does not output
sound.

• Poor connector connection of speaker.
• Sound signal circuit malfunction between

audio unit and speaker.
Refer to:

AV-32, "Diagnosis Procedure"

(front

tweeter).

AV-30, "Diagnosis Procedure"

(front door

speaker).

AV-34, "Diagnosis Procedure"

(rear door

speaker).

• Malfunction in speaker.

Refer to:

AV-49, "Removal and Installation"

(front

tweeter).

AV-50, "Removal and Installation"

(front

door speaker).

AV-51, "Removal and Installation"

(rear

door speaker).

• Malfunction in audio unit.

Refer to

AV-48, "Removal and Installa-

tion"

AUDIO SYSTEM

AV-41

< SYMPTOM DIAGNOSIS >

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RELATED TO HANDS-FREE PHONE

• Before performing diagnosis, confirm that the cellular phone being used by the customer is compatible with

the vehicle.

• It is possible that a malfunction is occurring due to a version change of the phone even though the phone is

a compatible type. This can be confirmed by changing the cellular phone to another compatible type, and

check that it operates normally. It is important to determine whether the cause of the malfunction is the vehi-

cle or the cellular phone.

Check Compatibility

1. Make sure the customer’s Bluetooth

related concern is understood.

2. Verify the customer’s concern.

NOTE:

The customer’s phone may be required, depending upon their concern.

3. Write down the customer’s phone brand, model and service provider.

NOTE:

It is necessary to know the service provider. On occasion, a given phone may be on the approved list with

one provider, but may not be on the approved list with other providers.

4. Go to “www.nissanusa.com/bluetooth/”.
a. Using the website’s search engine, find out if the customer’s phone is on the approved list.

Noise is mixed with audio.

Noise comes out from all speakers.

Malfunction in audio unit.
Refer to

AV-48, "Removal and Installation"

Noise comes out only from a certain speak-
er (front tweeter LH, front tweeter RH, front
door speaker LH, front door speaker RH,
rear door speaker LH, rear door speaker
RH).

• Poor connector connection of speaker.
• Sound signal circuit malfunction between

audio unit and speaker.
Refer to:

AV-32, "Diagnosis Procedure"

(front

tweeter).

AV-30, "Diagnosis Procedure"

(front door

speaker).

AV-34, "Diagnosis Procedure"

(rear door

speaker).

• Malfunction in speaker.
• Poor Installation of speaker (e.g. back-

lash and looseness).
Refer to:

AV-49, "Removal and Installation"

(front

tweeter).

AV-50, "Removal and Installation"

(front

door speaker).

AV-51, "Removal and Installation"

(rear

door speaker).

• Malfunction in audio unit.

Refer to

AV-48, "Removal and Installa-

tion"

Noise is mixed with radio only (when the ve-
hicle hits a bump or while driving over bad
roads)

Poor connector connection of antenna or
antenna feeder.
Refer to

AV-56, "Location of Antenna"

No radio reception or poor reception.

• Other audio sounds are normal.
• Any radio station cannot be received or

poor reception is caused even after mov-
ing to a service area with good reception
(e.g. a place with clear view and no ob-
stacles generating external noises).

• Rod antenna is not fully connected to an-

tenna base.

• Antenna base/rod connection (thread

zone) has foreign material or corrosion
inside.

• Poor connector connection of antenna or

antenna feeder.

Refer to

AV-56, "Location of Antenna"

Buzz/rattle sound from speaker

The majority of buzz/rattle sounds are not
indicative of an issue with the speaker, usu-
ally something nearby the speaker is caus-
ing the buzz/rattle.

Refer to "SQUEAK AND RATTLE TROU-
BLE DIAGNOSIS" in the appropriate interi-
or trim section.

Symptoms

Check items

Probable malfunction location

AV-42

< SYMPTOM DIAGNOSIS >

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AUDIO SYSTEM

b. If the customer’s phone is NOT on the approved list:

Stop diagnosis here. The customer needs to obtain a Bluetooth

phone that is on the approved list before

any further action.

If the feature related to the customer’s concern shows as “N” (not compatible):

Stop diagnosis here. If the customer still wants the feature to function, they will need to get an approved

phone showing the feature as “Y” (compatible) in the “Basic Features”.

d. If the feature related to the customer’s concern shows as “Y” (compatible):

Perform diagnosis as per the following table.

Symptoms

Check items

Probable malfunction location

Does not recognize cellular phone connec-
tion (no connection is displayed on the dis-
play at the guide).

Repeat the registration of cellular phone.

Malfunction in audio unit.
Replace audio unit. Refer to

AV-48, "Re-

moval and Installation"

Hands-free phone cannot be established.

• Hands-free phone operation can be

made, but the communication cannot be
established.

• Hands-free phone operation can be per-

formed, however, voice between each
other cannot be heard during the conver-
sation.

The other party’s voice cannot be heard by
hands-free phone.

Check the “microphone speaker” in Inspec-
tion & Adjustment Mode if sound is heard.

Originating sound is not heard by the other
party with hands-free phone communica-
tion.

Sound operation function is normal.

Sound operation function does not work.

Microphone signal circuit malfunction.
Refer to

AV-38, "Diagnosis Procedure"

The system cannot be operated.

• The voice recognition can be controlled.
• Steering switch’s VOL UP and VOL

DOWN switch works, but

does not

work.

Steering switch malfunction.
Replace steering switch. Refer to

AV-52,

"Removal and Installation"

Steering switch’s

, VOL UP and VOL

DOWN switches do not work.

Steering switch signal circuit malfunction.
Refer to

AV-36, "Diagnosis Procedure"

All steering switches do not work.

Steering switch ground circuit malfunction.
Refer to

AV-36, "Diagnosis Procedure"

NORMAL OPERATING CONDITION

AV-43

< SYMPTOM DIAGNOSIS >

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NORMAL OPERATING CONDITION

Description

INFOID:0000000010247126

The majority of the audio concerns are the result of outside causes (bad CD, electromagnetic interference,

etc.).

NOISE

The following noise results from variations in field strength, such as fading noise and multi-path noise, or

external noise from trains and other sources. It is not a malfunction.

• Fading noise: This noise occurs because of variations in the field strength in a narrow range due to moun-

tains or buildings blocking the signal.

• Multi-path noise: This noise results from the waves sent directly from the broadcast station arriving at the

antenna at a different time from the waves which reflect off mountains or buildings.

The vehicle itself can be a source of noise if noise prevention parts or electrical equipment is malfunctioning.

Check if noise is caused and/or changed by engine speed, ignition switch turned to each position, and opera-

tion of each piece of electrical equipment to determine the cause.

NOTE:

The source of the noise can be found easily by listening to the noise while removing the fuses of electrical

components, one by one.

Type of Noise and Possible Cause

RELATED TO HANDS-FREE PHONE

Occurrence condition

Possible cause

Occurs only when engine is ON.

A continuous growling noise occurs. The speed of
the noise varies with changes in the engine speed.

• Ignition components

The occurrence of the noise is linked with the operation of the fuel pump.

• Fuel pump condenser

Noise only occurs when various
electrical components are oper-
ating.

A cracking or snapping sound occurs with the op-
eration of various switches.

• Relay malfunction, audio unit malfunction

The noise occurs when various motors are operat-
ing.

• Motor case ground
• Motor

The noise occurs constantly, not just under certain conditions.

Poor ground of antenna feeder line

A cracking or snapping sound occurs while the vehicle is being driven, especially when
it is vibrating excessively.

• Ground wire of body parts
• Ground due to improper part installation
• Wiring connections or a short circuit

Symptom

Cause and Counter measure

Does not recognize cellular phone connection (No connection is
displayed on the display at the guide).

Some Bluetooth

enabled cellular phones may not be recognized

by the in-vehicle phone module.
Refer to “RELATED TO HANDS-FREE PHONE (Check Compati-
bility)” in

AV-40, "Symptom Table"

Cannot use hands-free phone.

Customer will not be able to use a hands-free phone under the fol-
lowing conditions:
• The vehicle is outside of the telephone service area.
• The vehicle is in an area where it is difficult to receive radio

waves; such as in a tunnel, in an underground parking garage,
near a tall building or in a mountainous area.

• The cellular phone is locked to prevent it from being dialed.
NOTE:
While a cellular phone is connected through the Bluetooth

wire-

less connection, the battery power of the cellular phone may dis-
charge quicker than usual. The Bluetooth

Hands-Free Phone

System cannot charge cellular phones.

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