Nissan Pathfinder (2006 year). Manual - part 68

AUDIO

AV-35

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AV

2006 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

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-37, "Power Supply Circuit 

Inspection"

 .

●

Audio unit

Symptom

Possible cause

CD cannot be inserted.

●

CD

●

Audio unit

CD cannot be ejected.

The CD cannot be played.

The sound skips, stops suddenly, or is distorted.

AV-36

AUDIO

2006 Pathfinder

FOR SATELLITE RADIO TUNER (FACTORY INSTALLED) ONLY

NOTE:
In vehicles equipped with NAVI, when pressing the SAT button, the display unit will display `NO SAT' when the
following conditions exist:

●

Loss of power to the satellite radio tuner

●

Open or short in the REQ1, TXD, or RXD circuits.

If the satellite antenna is disconnected or inoperative, the display unit will display ANTENNA.

Noise Inspection

EKS00G5L

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 

Symptom

Possible cause

Inoperative

●

Satellite radio tuner (factory installed) power and ground circuit inspection. 
Refer to 

AV-39, "Satellite Radio Tuner (Factory Installed) Power and Ground 

Supply Circuit Inspection"

 .

●

Satellite radio tuner (factory installed) communication circuit inspection. 
Refer to 

AV-40, "Satellite Radio Tuner (Factory Installed) Communication 

Circuit Inspection"

 .

If above check is OK, replace satellite radio tuner. Refer to 

AV-64, "SATEL-

LITE RADIO TUNER"

 .

Right or left channel does not sound

●

Satellite radio tuner (factory installed) right channel audio signal circuit 
inspection. Refer to 

AV-43, "Satellite Radio Tuner (Factory Installed) Right 

Channel Audio Signal Circuit Inspection"

 .

●

Satellite radio tuner (factory installed) left channel audio signal circuit 
inspection. Refer to 

AV-42, "Satellite Radio Tuner (Factory Installed) Left 

Channel Audio Signal Circuit Inspection"

 .

If above check is OK, replace satellite radio tuner. Refer to 

AV-64, "SATEL-

LITE RADIO TUNER"

 .

Poor reception

●

Location of vehicle. Make certain vehicle is in an open area.

●

Satellite radio antenna or antenna feeder. Refer to 

AV-68, "Location of 

Antenna"

 .

Noisy

●

Satellite radio tuner (factory installed) ground.

●

Satellite radio tuner (factory installed) harness shield wires.

●

Electrical equipment (generator, bonding wire, etc.). Refer to 

AV-36, "Noise 

Inspection"

 .

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

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

AUDIO

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AV

2006 Pathfinder

Power Supply Circuit Inspection

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1. 

CHECK FUSES

Check that the following fuses are not blown.

OK or NG

OK

>> GO TO 2.

NG

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

PG-4,

"POWER SUPPLY ROUTING CIRCUIT"

 .

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

6

Battery power

29

10

Ignition switch ACC or ON

4

AV switch

1

Battery power

29

2

Ignition switch ACC or ON

4

BOSE speaker amp. (with BOSE)

1

Battery power

29

Display control unit

12

Ignition switch ON or START

12

Subwoofer (BOSE system)

6

Battery power

17

AV-38

AUDIO

2006 Pathfinder

2. 

POWER SUPPLY CIRCUIT CHECK

1.

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

2.

Check voltage between the audio unit and ground.

3.

Check voltage between subwoofer (BOSE system) and ground.

4.

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

OK or NG

OK

>> GO TO 3.

NG

>>

●

Check connector housings for disconnected or loose
terminals.

●

Repair harness or connector.

3. 

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

OK

>> Inspection End.

NG

>>

●

Check connector housings for disconnected or loose
terminals.

●

Repair harness or connector.

Unit

Terminal No.

OFF

ACC

ON

(+)

(-)

Connector

Terminal

Audio unit

M43

6

Ground

Battery 
voltage

Battery 
voltage

Battery 
voltage

10

Ground

0V

Battery 
voltage

Battery 
voltage

WKIA3228E

Unit

Terminal No.

OFF

ACC

ON

(+)

(-)

Connector

Terminal

Sub-
woofer

B72

6

Ground

Battery 
voltage

Battery 
voltage

Battery 
voltage

WKIA3229E

Unit

Terminal No.

OFF

ACC

ON

(+)

(-)

Connector

Terminal

BOSE 
speaker 
amp.

B74

1

Ground

Battery 
voltage

Battery 
voltage

Battery 
voltage

WKIA3230E

Continuity should exist.

WKIA3231E

AUDIO

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2006 Pathfinder

Satellite Radio Tuner (Factory Installed) Power and Ground Supply Circuit 
Inspection

EKS00HK9

1. 

CHECK FUSES

●

Check that the following fuses are not blown.

OK or NG

OK

>> GO TO 2.

NG

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

PG-4,

"POWER SUPPLY ROUTING CIRCUIT"

 .

2. 

POWER SUPPLY CIRCUIT CHECK

1.

Turn ignition switch OFF.

2.

Disconnect satellite radio tuner (factory installed) M41 connector. 

3.

Check voltage between the satellite radio tuner (factory installed) and ground.

OK or NG

OK

>> GO TO 3.

NG

>>

●

Check connector housings for disconnected or loose
terminals.

●

Repair harness or connector.

3. 

GROUND CIRCUIT CHECK

1.

Turn ignition switch OFF.

2.

Inspect satellite radio tuner (factory installed) case ground.

3.

Disconnect satellite radio tuner (factory installed) connector M41 (A) and audio unit connector M42 (B).

4.

Check continuity between satellite radio tuner (factory installed) and audio unit.

OK or NG

OK

>> Inspection End.

NG

>>

●

Check connector housings for disconnected or loose
terminals.

●

Repair harness, connector or satellite radio tuner (fac-
tory installed) case ground.

Unit

Terminals

Signal name

Fuse No.

Satellite radio tuner (factory 
installed)

32

Battery power

17

36

Ignition switch ACC or ON

4

Unit

Terminal No.

OFF

ACC

ON

(+)

(-)

Connector

Terminal

Satellite 
radio tuner 
(factory 
installed)

M41

32

Ground

Battery 
voltage

Battery 
voltage

Battery 
voltage

36

Ground

0V

Battery 
voltage

Battery 
voltage

WKIA4539E

Terminals

Continuity

Satellite radio tuner

Audio unit

Connector

Terminal

Connector

Terminal

A: M41

25

B: M42

45

Yes

26

46

WKIA4540E

AV-40

AUDIO

2006 Pathfinder

Satellite Radio Tuner (Factory Installed) Communication Circuit Inspection

EKS00HKA

1. 

CHECK HARNESS - 1

1.

Turn ignition switch OFF.

2.

Disconnect satellite radio tuner (factory installed) connector M41 and audio unit connector M42.

3.

Check continuity between satellite radio tuner (factory installed)
harness connector M41 (A) terminal 28 and audio unit harness
connector M42 (B) terminal 48

4.

Check continuity between satellite radio tuner (factory installed)
harness connector M41 (A) terminal 28 and ground.

OK or NG

OK

>> GO TO 2.

NG

>> Repair harness or connector.

2. 

CHECK HARNESS - 2

1.

Check continuity between satellite radio tuner (factory installed)
harness connector M41 (A) terminal 29 and audio unit harness
connector M42 (B) terminal 49

2.

Check continuity between satellite radio tuner (factory installed)
harness connector M41 (A) terminal 29 and ground.

OK or NG

OK

>> GO TO 3.

NG

>> Repair harness or connector.

3. 

CHECK HARNESS - 3

1.

Check continuity between satellite radio tuner (factory installed)
harness connector M41 (A) terminal 30 and audio unit harness
connector M42 (B) terminal 50

2.

Check continuity between satellite radio tuner (factory installed)
harness connector M41 (A) terminal 30 and ground.

OK or NG

OK

>> GO TO 4.

NG

>> Repair harness or connector.

Continuity should exist.

Continuity should not exist.

WKIA4541E

Continuity should exist.

Continuity should not exist.

WKIA4542E

Continuity should exist.

Continuity should not exist.

WKIA4543E

AUDIO

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AV

2006 Pathfinder

4. 

CHECK REQ1 SIGNAL

1.

Connect satellite radio tuner (factory installed) connector and audio unit connector.

2.

Turn ignition switch to ACC

3.

Check signal between satellite radio tuner (factory installed) har-
ness connector M41 terminal 28 and ground with CONSULT-ll or
oscilloscope.

OK or NG

OK

>> GO TO 5.

NG

>> Replace audio unit. Refer to .

AV-61, "AUDIO UNIT -

WITH NAVI"

  or 

AV-61, "AUDIO UNIT - WITHOUT NAVI"

.

5. 

CHECK TXD SIGNAL

1.

Check signal between satellite radio tuner (factory installed) har-
ness connector M41 terminal 29 and ground with CONSULT-ll or
oscilloscope.

OK or NG

OK

>> GO TO 6.

NG

>> Replace audio unit. Refer to 

AV-61, "AUDIO UNIT -

WITH NAVI"

  or 

AV-61, "AUDIO UNIT - WITHOUT NAVI"

.

6. 

CHECK RXD SIGNAL

1.

Check signal between satellite radio tuner (factory installed) har-
ness connector M41 terminal 30 and ground with CONSULT-ll or
oscilloscope.

OK or NG

OK

>> Replace satellite radio tuner. Refer to 

AV-64, "SATEL-

LITE RADIO TUNER"

 .

NG

>> Replace audio unit. Refer to 

AV-61, "AUDIO UNIT -

WITH NAVI"

  or 

AV-61, "AUDIO UNIT - WITHOUT NAVI"

.

28 - Ground

: Refer to 

AV-31, "Terminals 

and Reference Value for Sat-
ellite Radio Tuner"

 .

WKIA4544E

29 - Ground

: Refer to 

AV-31, "Terminals 

and Reference Value for Sat-
ellite Radio Tuner"

 .

WKIA4545E

30 - Ground

: Refer to 

AV-31, "Terminals 

and Reference Value for Sat-
ellite Radio Tuner"

 .

WKIA4546E

AV-42

AUDIO

2006 Pathfinder

Satellite Radio Tuner (Factory Installed) Left Channel Audio Signal Circuit 
Inspection

EKS00HKB

1. 

CHECK HARNESS

1.

Turn ignition switch OFF.

2.

Disconnect satellite radio tuner (factory installed) connector M41 (A) and audio unit connector M42 (B).

3.

Check continuity between satellite radio tuner (factory installed) and audio unit.

4.

Check continuity between satellite radio tuner (factory installed)
and ground.

OK or NG

OK

>> GO TO 2.

NG

>> Repair harness or connector.

2. 

CHECK LEFT CHANNEL AUDIO SIGNAL

1.

Connect satellite radio tuner (factory installed) and audio unit.

2.

Turn ignition switch ON.

3.

Check signal between satellite radio tuner (factory installed)
connector M41 terminals 21 and 22 with CONSULT-ll or oscillo-
scope.

OK or NG

OK

>> Replace satellite radio tuner. Refer to 

AV-64, "SATEL-

LITE RADIO TUNER"

 .

NG

>> Replace audio unit. Refer to 

AV-61, "AUDIO UNIT -

WITH NAVI"

  or 

AV-61, "AUDIO UNIT - WITHOUT NAVI"

. 

Terminals

Continuity

Satellite radio tuner

Audio unit

Connector

Terminal

Connector

Terminal

A: M41

21

B: M42

41

Yes

22

42

Terminals

Continuity

Satellite radio tuner

—

Connector

Terminal

A: M41

21

Ground

No

22

WKIA4547E

21 - 22

: Refer to 

AV-31, "Terminals 

and Reference Value for Sat-
ellite Radio Tuner"

 .

WKIA4548E