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Nissan Pathfinder (2008 year). Manual - part 36

AV-128

< ECU DIAGNOSIS >

[MID AUDIO]

REAR VIEW CAMERA CONTROL UNIT

(W)

Ground

Composite image output (-)

Output

Ignition

switch

A/T selector lever R
position

(B)

Ground

Composite image output (+)

Output

Ignition

switch

A/T selector lever R
position

Terminal

Description

Condition

Reference value

(Approx.)

–

Signal name

Input/

Output

SKIA4896E

DVD PLAYER

AV-129

< ECU DIAGNOSIS >

[MID AUDIO]

DVD PLAYER

Reference Value

INFOID:0000000001450834

PHYSICAL VALUES

AWNIA0151ZZ

Terminal

Description

Condition

Reference value

(Approx.)

–

Signal name

Input/

Output

(W)

(B)

DVD audio signal LH

Output

Ignition

switch

With operation of the DVD
player

(B)

—

Shield

—

(B)

Ground

—

Ignition

switch

—

(BR)

Ground

Illumination control (pulse
width modulated)

—

With lighting switch ON

—

(L)

Ground

CAN communication

Input/

Output

Ignition

switch

—

(BR)

Ground

Video monitor power sup-
ply

Output

Ignition

switch

With DVD player operation

12V

(GR)

Ground

Switch power

Output

Ignition

switch

With DVD player operation

(W/L)

Ground

VTR (+)

Output

Ignition

switch

With DVD player operation

—

(O/L)

Ground

VTR (-)

Output

Ignition

switch

With DVD player operation

—

(Y)

Ground

Display ground

—

Ignition

switch

With DVD player operation

(V)

—

Data receive

Input

—

SKIB3609E

AV-130

< ECU DIAGNOSIS >

[MID AUDIO]

DVD PLAYER

(R)

(G)

DVD audio signal RH

Output

Ignition

switch

With DVD player operation

(Y)

Ground

Battery power

Input

—

12V

(SB)

Ground

Illumination power

Input

—

With instrument illumination

12V

(P)

Ground

CAN communication

Input/

Output

Ignition

switch

—

(G/B)

Ground

ACC power

Input

Ignition

switch

ACC or

—

12V

(P)

Ground

Input

Ignition

switch

—

(G)

Ground

Video out

Input

Ignition

switch

ACC or

—

Shield —

—

(LG)

—

Data transmit

Output

—

Terminal

Description

Condition

Reference value

(Approx.)

–

Signal name

Input/

Output

SKIB3609E

SKIB2251J

AUDIO SYSTEM

AV-131

< SYMPTOM DIAGNOSIS >

[MID AUDIO]

SYMPTOM DIAGNOSIS

AUDIO SYSTEM

Symptom Table

INFOID:0000000001450835

AUDIO SYSTEM

SATELLITE RADIO

DVD PLAYER

Symptom

Possible cause

Reference page

Inoperative

• AV control unit power circuit
• AV control unit

•

AV-66

•

AV-47

Steering switch does not operate

• Steering switch
• AV control unit

•

AV-87

•

AV-47

All speakers do not sound

• AV control unit
• AV control unit power circuit

•

AV-47

•

AV-66

One or several speakers do not sound

• Front door speaker
• Front tweeter
• Rear door speaker

•

AV-81

•

AV-83

•

AV-85

Symptom

Possible cause

Reference page

CD cannot be inserted.

AV control unit

AV-47

CD cannot be ejected.

The CD cannot be played.

The sound skips, stops suddenly, or is distorted.

Symptom

Possible cause

Reference page

Inoperative

• Satellite radio tuner power or ground circuit
• Satellite radio tuner communication circuit
• Satellite radio tuner

•

AV-69

•

AV-89

•

AV-69

Right or left channel does not sound

• Satellite radio tuner right channel audio signal circuit
• Satellite radio tuner left channel audio signal circuit
• Satellite radio tuner

•

AV-92

•

AV-92

•

AV-69

Symptom

Possible cause

Reference page

DVD player inoperative

• Power supply and ground circuits
• DVD player

•

AV-72

•

AV-129

No sound when playing a DVD

• Audio signal circuits
• AV control unit
• DVD player

•

AV-94

•

AV-47

•

AV-129

Video monitor is inoperative/does not display properly

• Power supply and ground circuits
• Video out circuit
• DVD player
• Video monitor

•

•

•

•

DVD remote control is inoperative/does not operate
properly

• DVD player
• Video monitor

•

AV-72

•

AV-73

Headphones inoperative

• Headphone batteries
• Headphone audio signal circuits from AV control unit
• AV control unit
• Video monitor

•

AV-129

•

AV-94

•

AV-94

AV-132

< SYMPTOM DIAGNOSIS >

[MID AUDIO]

NORMAL OPERATING CONDITION

NORMAL OPERATING CONDITION

Description

INFOID:0000000001450836

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, and 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

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.

• Rear defogger coil malfunction
• Open circuit in printed heater
• 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

PRECAUTIONS

AV-133

< PRECAUTION >

[MID AUDIO]

PRECAUTION

PRECAUTIONS

Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"

INFOID:0000000001731052

The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the “SRS AIRBAG” and “SEAT BELT” of this
Service Manual.

WARNING:

• To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in

the event of a collision which would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.

• Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal

injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag
Module, see the “SRS AIRBAG”.

• Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this

Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or har-
ness connectors.

AV-134

< ON-VEHICLE REPAIR >

[MID AUDIO]

AV CONTROL UNIT

ON-VEHICLE REPAIR

AV CONTROL UNIT

Removal and Installation

INFOID:0000000001316034

AUDIO UNIT - WITHOUT NAVI

Cluster lid C

AV switch assembly

AV control unit

AV control unit brackets

Tuner knob switch

AC switch assembly

Volume knob switch

Volume knob

Temp knobs RH and LH

10. Enter button

11.

Tuner knob

ALNIA0361ZZ

AV CONTROL UNIT

AV-135

< ON-VEHICLE REPAIR >

[MID AUDIO]

CAUTION:

Only remove and replace the A/C or AV switch assembly knobs if damaged or missing. The knobs
must not be removed from switches when removing and installing the A/C or AV switch assembly to
prevent damage to the switch assembly.

REMOVAL

Disconnect the battery negative terminal.

Remove the cluster lid C. Refer to

IP-10, "Removal and Installation"

Remove the AV control unit screws, using a power tool.

Remove the AV control unit.

Remove the A/C and AV switch assembly screws, then remove the A/C and AV switch assemblies as nec-
essary.

INSTALLATION

Installation is in the reverse order of removal.

Content .. 34 35 36 37 ..