Nissan Xterra. Instruction — part 12
AV-40
< SYMPTOM DIAGNOSIS >
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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.
.
• Audio unit power supply and ground cir-
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:
-
tweeter).
-
(front door
speaker).
-
(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.
.
AV
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:
-
(front
tweeter).
-
(front door
speaker).
-
(rear door
speaker).
• Malfunction in speaker.
• Poor Installation of speaker (e.g. back-
lash and looseness).
Refer to:
-
AV-49, "Removal and Installation"
tweeter).
-
AV-50, "Removal and Installation"
door speaker).
-
AV-51, "Removal and Installation"
door speaker).
• Malfunction in audio unit.
Refer to
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
.
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
.
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.
c.
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
.
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
.
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
Steering switch’s
, VOL UP and VOL
DOWN switches do not work.
Steering switch signal circuit malfunction.
Refer to
.
All steering switches do not work.
Steering switch ground circuit malfunction.
Refer to
.
AV
NORMAL OPERATING CONDITION
AV-43
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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
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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