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Nissan Pathfinder (2005 year). Manual - part 69

AUDIO

AV-27

2005 Pathfinder

21 (W)

5 (G)

Subwoofer

Output

Receive audio
signal

No sound from
subwoofer.

22 (Y)

Ground

Subwoofer ON
signal

Output

–

More than 6.5V

Subwoofer does
not work properly.

24 (L)

23 (B/W)

Audio sound
signal rear RH

Input

Receive audio
signal

No sound from
rear door speaker
RH or rear door
tweeter RH.

26 (BR)

25 (B/R)

Audio sound
signal rear LH

Input

Receive audio
signal

No sound from
rear door speaker
LH or rear door
tweeter LH.

28 (Y)

27 (BR)

Audio sound
signal front RH

Input

Receive audio
signal

No sound from
front door speaker
RH or front tweeter
RH.

30 (W)

29 (B)

Audio sound
signal front LH

Input

Receive audio
signal

No sound from
front door speaker
LH or front tweeter
LH.

31 (G)

Ground

Amp. ON sig-
nal

Input

–

More than 6.5V

System does not
work properly.

Terminal

(wire color)

Item

Signal

input/

output

Condition

Reference value

(Approx.)

Example of

symptom

–

Ignition

switch

Operation

SKIA0177E

AV-28

AUDIO

2005 Pathfinder

Terminals and Reference Value for AV Switch

EKS009U6

Terminal No.

(Wire color)

Item

Signal

input/

output

Condition

Voltage

(Approx.)

Example of

symptom

–

Ignition

switch

Operation

1 (Y)

Ground

Battery

power

Input

–

Battery voltage

System does not
work properly.

2 (G/B)

Ground

ACC power

Input

ACC

–

Battery voltage

System does not
work properly.

3 (R)

Ground

Illumination

signal

Input

OFF

Lighting switch is
ON (position 1).

Battery voltage

AV switch illumi-
nation does not
come on when
lighting switch is
ON (position 1).

Turn lighting switch
OFF.

Approx. 3.0V or less

4 (BR)

Ground

Illumination

control signal

Input

Illumination control

switch is operated

by lighting switch in

1st position.

Changes between 0 and 12V.

AV switch illumi-
nation cannot be
controlled.

5 (B)

Ground

–

6 (V)

Ground

Communica-

tion signal (+)

Input/

output

–

System does not
work properly.

–

Shield

ground

–

8 (LG)

Ground

Communica-

tion signal (-)

Input/

output

–

System does not
work properly.

12 (R)

Ground

Remote con-

trol A

Input

Press MODE switch

Steering wheel
audio controls
do not function.

Press SEEK UP

switch

0.75V

Press VOL UP

switch

Except for above

13 (GR)

Ground

Remote con-

trol B

Input

Press POWER

switch

Steering wheel
audio controls
do not function.

Press SEEK DOWN

switch

0.75V

Press VOL DOWN

switch

Except for above

14 (L)

–

Remote con-

trol ground

–

Steering wheel
audio controls
do not function.

SKIA0175E

SKIA0176E

AUDIO

AV-29

2005 Pathfinder

AV Switch Self-Diagnosis Function

EKS009U7

It can check ON/OFF operation of each switch in the AV switch (with NAVI) or audio unit (without NAVI) and
diagnose the input signals from the steering switch.

STARTING THE SELF-DIAGNOSIS MODE (BOSE SYSTEM WITHOUT NAVI)

Turn ignition switch from OFF to ACC.

Press and hold the “CLOCK” switch and turn the volume control dial clockwise or counterclockwise for 30
clicks or more.

Then the self-diagnosis operates. A single beep indicates self-diagnosis mode is active.

Initially, all display segments will be illuminated.

Press each switch. When each switch is pressed, its name and communication code will be displayed.
NOTE:
CD player LOAD and EJECT buttons are not included in this test and will not change the display when
pressed.

STARTING THE SELF-DIAGNOSIS MODE (BOSE SYSTEM WITH NAVI)

Turn ignition switch from OFF to ACC.

Within 10 seconds press and hold the switches “PAUSE/MUTE”
and “PREV” simultaneously for 3 seconds.
Then the self-diagnosis operates. A single beep indicates self-
diagnosis mode is active.

Press each switch and listen for beep.

NOTE:
CD player LOAD and EJECT buttons are not included in this test
and will not beep when pressed.

WKIA3226E

WKIA3227E

AV-30

AUDIO

2005 Pathfinder

EXITING THE SELF-DIAGNOSIS MODE

Turn ignition switch OFF. Then the self-diagnosis ends.

DIAGNOSIS FUNCTION

●

It can check for continuity of the switches by sounding the beep when each AV switch and steering switch
is pressed.

●

It can check for continuity of harness between AV switch and steering switch.

AUDIO

AV-31

2005 Pathfinder

Trouble Diagnosis

EKS009U8

The majority of the audio troubles are the result of outside causes (bad CD, electromagnetic interference,
etc.). Check the inspection items below to diagnose the malfunction.

MALFUNCTION WITH RADIO AND CD (BASE AND MID LEVEL SYSTEM)

MALFUNCTION WITH RADIO AND CD (BOSE SYSTEM)

Before proceeding on models with NAVI, confirm that other AV switch functions (except audio functions) oper-
ate. If not, refer to

AV-153, "Unable to Operate All of AV Switches (Unable to Start Self-Diagnosis)"

Symptom

Possible cause

Inoperative

●

Audio unit power circuit check. Refer to

AV-33, "Power Supply Circuit

Inspection"

If above check is OK, replace audio unit.

Steering switch does not operate (with mid level
audio system)

●

Steering switch check. Refer to

AV-35, "Steering Switch Check (With NAVI)"

If above check is OK, replace audio unit.

All speakers do not sound

●

Audio unit

One or several speakers do not sound

●

Front door speaker check. Refer to

AV-38, "Sound Is Not Heard From Front

Door Speaker or Front Tweeter (Base and Mid Level System)"

●

Rear door speaker check. Refer to

AV-40, "Sound Is Not Heard From Rear

Door Speaker or Rear Door Tweeter (Base and Mid Level System)"

Poor sound

●

Audio unit

●

Speaker

Noisy

●

Audio unit

●

Electrical equipment (generator, bonding wire, etc.)

Symptom

Possible cause

Inoperative

●

Audio unit power circuit check. Refer to

AV-33, "Power Supply Circuit

Inspection"

●

Audio communication line check (with Navigation System). Refer to

AV-134,

"Audio Communication Line Check (Between Display Control Unit and
Audio Unit)"

●

AV switch check. Refer to

AV-37, "AV Switch Check (With NAVI)"

If above check is OK, replace audio unit.

Steering switch does not operate

●

Steering switch check. Refer to

AV-35, "Steering Switch Check (With NAVI)"

●

AV switch check. Refer to

AV-37, "AV Switch Check (With NAVI)"

●

Audio communication line check (with Navigation System). Refer to

AV-134,

"Audio Communication Line Check (Between Display Control Unit and
Audio Unit)"

If above check is OK, replace audio unit.

Audio information is not displayed on screen (with
NAVI)

●

Display unit check. Refer to

AV-109, "Self-Diagnosis Mode (DCU)"

All speakers do not sound

●

Audio unit

●

BOSE speaker amp. power supply and ground circuit check. Refer to

AV-33,

"Power Supply Circuit Inspection"

●

BOSE speaker amp. ON signal

●

BOSE speaker amp.

One or several speakers do not sound

●

Front door speaker check. Refer to

AV-42, "Sound Is Not Heard From Front

Door Speaker or Front Tweeter (BOSE System)"

●

Rear door speaker check. Refer to

AV-46, "Sound Is Not Heard From Rear

Door Speaker or Rear Door Tweeter (BOSE System)"

●

Subwoofer check. Refer to

AV-49, "Sound Is Not Heard From Subwoofer

(BOSE System)"

AV-32

AUDIO

2005 Pathfinder

FOR RADIO ONLY

NOTE:
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.

FOR CD ONLY

Noise Inspection

EKS009U9

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

Poor sound

●

Audio unit

●

BOSE speaker amp.

●

Speaker

Noisy

●

Audio unit

●

BOSE speaker amp.

●

Electrical equipment (generator, bonding wire, etc.)

Symptom

Possible cause

Symptom

Possible cause

No sound

●

Audio unit

●

Antenna feeder, wiring or connections

●

Antenna amplifier, power supply, wiring or connections

Noisy

●

Audio unit

●

Audio unit case ground

●

Antenna feeder, wiring or connections

●

Antenna amplifier, power supply, wiring or connections

●

Noise prevention parts

●

Electrical equipment

●

Wire harness of each piece of electrical equipment

All radio stations stored in memory are deleted

●

Audio unit power circuit. Refer to

AV-33, "Power Supply Circuit

Inspection"

●

Audio unit

Symptom

Possible cause

CD cannot be inserted.

●

Audio unit

CD cannot be ejected.

The CD cannot be played.

The sound skips, stops suddenly, or is distorted.

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

A whistling noise occurs while the engine speed is
high. A booming noise occurs while the engine is
running and the lighting switch is ON.

●

Generator

AUDIO

AV-33

2005 Pathfinder

Power Supply Circuit Inspection

EKS009UA

CHECK FUSES

Check that the following fuses are not blown.

OK or NG

>> GO TO 2.

>> If fuse is blown, be sure to eliminate cause of problem before installing new fuse. Refer to

PG-4,

"POWER SUPPLY ROUTING CIRCUIT"

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
operation 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 amplifier or
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

Occurrence condition

Possible cause

Unit

Terminals

Signal name

Fuse No.

Audio unit

Battery power

Ignition switch ACC or ON

AV switch

Battery power

Ignition switch ACC or ON

BOSE speaker amp. (with BOSE)

Battery power

Display control unit

Ignition switch ON or START

Subwoofer (BOSE system)

Battery power

AV-34

AUDIO

2005 Pathfinder

POWER SUPPLY CIRCUIT CHECK

Disconnect audio unit connector M43, subwoofer connector B72 (with BOSE) and BOSE speaker amp.
connector B74 (with BOSE).

Check voltage between the audio unit and ground.

Check voltage between subwoofer (BOSE system) and ground.

Check voltage between BOSE speaker amp. (with BOSE) and ground.

OK or NG

>> GO TO 3.

●

Check connector housings for disconnected or loose
terminals.

●

Repair harness or connector.

GROUND CIRCUIT CHECK

Check continuity between subwoofer (BOSE system) harness con-
nector B72 terminal 5 and BOSE speaker amp. (with BOSE) harness
connector B74 terminal 17 and ground.

OK or NG

>> Inspection End.

●

Check connector housings for disconnected or loose
terminals.

●

Repair harness or connector.

Unit

Terminal No.

OFF

ACC

(+)

(-)

Connector

Terminal

Audio unit

M43

Ground

Battery
voltage

Ground

Battery
voltage

WKIA3228E

Unit

Terminal No.

OFF

ACC

(+)

(-)

Connector

Terminal

Sub-
woofer

B72

Ground

Battery
voltage

WKIA3229E

Unit

Terminal No.

OFF

ACC

(+)

(-)

Connector

Terminal

BOSE
speaker
amp.

B74

Ground

Battery
voltage

WKIA3230E

Continuity should exist.

WKIA3231E

Content .. 67 68 69 70 ..