Nissan Pathfinder (2008 year). Manual - part 55

AV-280

< BASIC INSPECTION >

[BOSE AUDIO WITH NAVIGATION]

DIAGNOSIS AND REPAIR WORKFLOW

BASIC INSPECTION

DIAGNOSIS AND REPAIR WORKFLOW

Work Flow

INFOID:0000000001450528

OVERALL SEQUENCE

• Reference 1··· Refer to 

AV-306, "AV CONTROL UNIT : CONSULT-III Function"

.

• Reference 2··· Refer to 

AV-411, "Symptom Table"

.

DETAILED FLOW

1.

CHECK SYMPTOM

Check the malfunction symptoms by performing the following items. 
• Interview the customer to obtain the malfunction information (conditions and environment when the malfunc-

tion occurred).

• Check the symptom. 

>> GO TO 2

2.

SELF-DIAGNOSIS (CONSULT-III)

1.

Connect CONSULT-III and perform “SELF-DIAGNOSIS” for “MULTI AV”.
NOTE:
Skip to step 4 of the diagnosis procedure if “MULTI AV” is not displayed.

2.

Check if any DTC No. is displayed in the self-diagnosis results.

AWNIA0030GB

AV

DIAGNOSIS AND REPAIR WORKFLOW

AV-281

< BASIC INSPECTION >

[BOSE AUDIO WITH NAVIGATION]

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

Is any DTC No. displayed?

YES

>> GO TO 3

NO

>> GO TO 4

3.

CHECK SELF-DIAGNOSIS RESULTS (CONSULT-III)

1.

Check the DTC No. indicated in the self-diagnosis results.

2.

Perform the relevant diagnosis referring to the DTC No. list. Refer to 

AV-400, "DTC Index"

.

NOTE:
Start with the diagnosis for the CAN communication system if “CAN COMM CIRCUIT [U1000] or CONTROL
UNIT (CAN) [U1010]” is displayed.

>> GO TO 5

4.

PERFORM DIAGNOSIS BY SYMPTOM

Perform the relevant diagnosis referring to the diagnosis chart by symptom. Refer to 

AV-411, "Symptom

Table"

.

>> GO TO 5

5.

REPAIR OR REPLACE MALFUNCTIONING PARTS

Repair or replace the identified malfunctioning parts.
NOTE:
Erase the stored self-diagnosis results after repairing or replacing the relevant components if any DTC No. has
been indicated in the self-diagnosis results. 

>> GO TO 6

6.

CHECK AFTER REPAIR

1.

Perform self-diagnosis for “MULTI AV” with CONSULT-III after repairing or replacing the malfunctioning
parts.

2.

Check if any DTC No. is displayed in the self-diagnosis results.

Is any DTC No. displayed?

YES

>> GO TO 3

NO

>> GO TO 7

7.

FINAL CHECK

Perform the operation check to confirm that the malfunction symptom is solved or that any other symptoms
are present.

Are any symptoms present?

YES

>> GO TO 4

NO

>> Inspection End.

AV-282

< FUNCTION DIAGNOSIS >

[BOSE AUDIO WITH NAVIGATION]

AUDIO SYSTEM

FUNCTION DIAGNOSIS

AUDIO SYSTEM

System Diagram

INFOID:0000000001450529

System Description

INFOID:0000000001450530

AUDIO SYSTEM

ALNIA0563GB

AV

AUDIO SYSTEM

AV-283

< FUNCTION DIAGNOSIS >

[BOSE AUDIO WITH NAVIGATION]

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

The audio system consists of the following components
• AV control unit
• Display unit
• BOSE speaker amp.
• Window antenna
• Steering wheel audio control switches
• A/C and AV switch assembly
• Front door speakers
• Front tweeters
• Rear door speakers
• Rear tweeters
• Subwoofer
When the audio system is on, radio signals are received by the window antenna. The AV control unit then
sends audio signals to the BOSE speaker amp. The BOSE speaker amp. amplifies the audio signals before
sending them to the front door speakers, front tweeters, rear door speakers, rear tweeters and the subwoofer.
Refer to Owner's Manual for audio system operating instructions.

SATELLITE RADIO SYSTEM

The satellite radio system consists of the following components
• Satellite antenna
• AV control unit
When the satellite radio system is on, radio signals are supplied to the AV control unit from the satellite
antenna. The AV control unit then sends audio signals to the BOSE speaker amp.
Refer to Owner's Manual for satellite radio system operating instructions.

SPEED SENSITIVE VOLUME SYSTEM

Volume level of this system goes up and down automatically in proportion to the vehicle speed. The control
level can be selected by the customer. Refer to Owner's Manual for operating instructions.

AV-284

< FUNCTION DIAGNOSIS >

[BOSE AUDIO WITH NAVIGATION]

AUDIO SYSTEM

Component Parts Location

INFOID:0000000001450531

1.

Steering wheel audio control switch-
es

2.

Front tweeter LH M109

3.

AV control unit M42, M45, M46, M71, 
M72

4.

A/C and AV switch assembly M98

5.

Display unit M93

6.

Front tweeter RH M111

ALNIA0562GB

AV

AUDIO SYSTEM

AV-285

< FUNCTION DIAGNOSIS >

[BOSE AUDIO WITH NAVIGATION]

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

Component Description

INFOID:0000000001450532

7.

Aux. jack M85

8.

Compact Flash insert slot

9.

Front door speaker
LH D12
RH D112

10. Rear door speaker

LH D207
RH D307

11. Rear tweeter

LH D208
RH D308

12. Subwoofer B72

13. BOSE speaker amp B74, B75 (locat-

ed under driver seat)

14. Rear camera control unit B176 (locat-

ed behind luggage finisher RHl)

15. Rear view camera  D551

16. Microphone R8

Part name

Description

AV control unit

Controls audio system and satellite radio system functions

Display unit

• Touch screen controls all audio and A/C operations
• Displays all audio and climate control related information

BOSE speaker amp.

Receives power (amp ON) and audio signals from AV control unit and out-
puts audio signals to each speaker.

Steering switches

• Audio operation can be operated
• Steering switch signal is output to AV control unit

Front door speakers

• Outputs audio signal from BOSE speaker amp.
• Outputs high, mid and low range sounds

Front tweeters

• Outputs audio signal from BOSE speaker amp.
• Outputs high range sounds

Rear door speakers

• Outputs audio signal from BOSE speaker amp.
• Outputs high, mid and low range sounds

Rear tweeters

• Outputs audio signal from BOSE speaker amp.
• Outputs high range sounds

Subwoofer

• Outputs audio signal from BOSE speaker amp.
• Outputs low range sounds

Satellite antenna

Audio signal (satellite radio) is received and output to AV control unit.

AV-286

< FUNCTION DIAGNOSIS >

[BOSE AUDIO WITH NAVIGATION]

NAVIGATION SYSTEM

NAVIGATION SYSTEM

System Diagram

INFOID:0000000001450533

System Description

INFOID:0000000001450534

NOTE:
Refer to NAVI System Owner's Manual for system operation.

The navigation system periodically calculates the vehicle's current
position according to the following three signals: Travel distance of
the vehicle as determined by the vehicle speed sensor, turning angle
of the vehicle as determined by the gyroscope (angular velocity sen-
sor), and the direction of vehicle travel as determined by the GPS
antenna (GPS information).
The current position of the vehicle is then identified by comparing the
calculated vehicle position with map data read from the map DVD-
ROM, which is stored in the DVD-ROM drive (map-matching), and
indicated on the screen with a current-location mark.

By comparing the vehicle position detection results found by the
GPS and by map-matching, more accurate vehicle position data can
be used.
The current vehicle position will be calculated by detecting the dis-
tance the vehicle moved from the previous calculation point and its
direction.

TRAVEL DISTANCE 

Travel distance calculations are based on the vehicle speed input signal. Therefore, the calculation may
become incorrect as the tires wear down. To prevent this, an automatic distance fine adjustment function has
been adopted.

TRAVEL DIRECTION 

Change in the travel direction of the vehicle is calculated by a gyroscope (angular velocity sensor) and a GPS
antenna (GPS information). As the gyroscope and GPS antenna have both merit and demerit, input signals

ALNIA0424GB

AWNIA0054GB

SEL684V

AV

NAVIGATION SYSTEM

AV-287

< FUNCTION DIAGNOSIS >

[BOSE AUDIO WITH NAVIGATION]

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

from them are prioritized in each situation. However, this order of priority may change in accordance with more
detailed travel conditions so that the travel direction is detected more accurately.

MAP–MATCHING

Map–matching is a function that repositions the vehicle on the road
map when a new location is judged to be the most accurate. This is
done by comparing the current vehicle position, calculated by the
method described in the position detection principle, with the road
map data around the vehicle, read from the map DVD-ROM stored in
the DVD-ROM drive.
Therefore, the vehicle position may not be corrected after the vehicle
is driven over a certain distance or time in which GPS information is
hard to receive. In this case, the current-location mark on the display
must be corrected manually.

CAUTION:

The road map data is based on data stored in the map DVD-
ROM.
• In map-matching, alternative routes to reach the destination will be

shown and prioritized, after the road on which the vehicle is cur-
rently driven has been judged and the current-location mark has
been repositioned.
If there is an error in distance and/or direction, the alternative
routes will be shown in different order of priority, and the wrong
road can be avoided.
If two roads are running in parallel, they are of the same priority.
Therefore, the current-location mark may appear on either of them
alternately, depending on maneuvering of the steering wheel and
configuration of the road.

• Map-matching does not function correctly when the road on which

the vehicle is driving is new and not recorded in the map DVD-
ROM, or when the road pattern stored in the map data and the
actual road pattern are different due to repair.
When driving on a road not present in the map, the map-matching
function may find another road and position the current-location
mark on it. Then, when the correct road is detected, the current-
location mark may leap to it.

• Effective range for comparing the vehicle position and travel direc-

tion calculated by the distance and direction with the road data
read from the map DVD-ROM is limited. Therefore, when there is
an excessive gap between the current vehicle position and the
position on the map, correction by map-matching is not possible.

GPS (GLOBAL POSITIONING SYSTEM)

Type

Advantage

Disadvantage

Gyroscope (angular velocity sensor)

• Can detect the vehicle's turning angle quite 

accurately.

• Direction errors may accumulate when the ve-

hicle is driven for long distances without stop-
ping.

GPS antenna (GPS information)

• Can detect the vehicle's travel direction 

(North/South/East/West).

• Correct direction cannot be detected when the 

vehicle speed is low.

SEL685V

SEL686V

SKIA0613E