Content .. 15 16 17 18 ..

Nissan Murano Z50 (2004 year). Manual - part 17

INTEGRATED DISPLAY SYSTEM

AV-83

Revision: 2004 November

2004 Murano

TKWA1730E

AV-84

INTEGRATED DISPLAY SYSTEM

Revision: 2004 November

2004 Murano

Wiring Diagram — COMM —

AKS004Z2

TKWA1731E

INTEGRATED DISPLAY SYSTEM

AV-85

Revision: 2004 November

2004 Murano

TKWA1732E

AV-86

INTEGRATED DISPLAY SYSTEM

Revision: 2004 November

2004 Murano

Terminals and Reference Value for Display Unit

AKS004XW

Terminal

(Wire color)

Item

Signal

input/

output

Condition

Reference value

Example of

symptom

–

Ignition

switch

Operation

1 (Y)

Ground

Battery power
supply

Input

OFF

–

Battery voltage

System does not
work properly.

2 (P/B)

Ground

ACC power
supply

Input

ACC

–

Battery voltage

System does not
work properly.

3 (G)

Ground

Ignition signal

Input

–

Battery voltage

A/C operation is
not possible.
Vehicle informa-
tion setting is not
possible.

4 (R/L)

Ground

Illumination
signal

Input

Lighting switch
ON

Approx. 12V

Screen does not
switch to night-
time mode after
the lighting
switch is turned
ON.

Lighting switch
OFF

Approx. 0V

6 (B)

Ground

–

Approx. 0V

–

7 (V/W)

Ground

Vehicle speed
signal
(8-pulse)

Input

When vehicle
speed is
approx. 25
MPH (40 km/h)

NOTE:
Maximum voltage may be 5 V
due to specifications (connected
units).

Drive computer
item is not dis-
played correctly.

8 (R/G)

Ground

Audio TX

Output

Operate audio
volume switch

Audio unit does
not operate
properly.

Ground

Shield

–

Approx. 0V

–

10 (R/Y)

Ground

Audio RX

Input

Operate audio
volume switch

Audio unit does
not operate
properly.

11 (L/G)

Ground

Communica-
tion signal (+)

Input/

Output

Operate A/C
and AV switch

System does not
work properly.

Ground

Shield

–

Approx. 0V

–

PKIA1935E

SKIA4402E

SKIA4403E

SKIA0175E

INTEGRATED DISPLAY SYSTEM

AV-87

Revision: 2004 November

2004 Murano

Terminals and Reference Value for A/C and AV Switch

AKS004XX

13 (L/R)

Ground

Communica-
tion signal (–)

Input/

Output

Operate A/C
and AV switch

System does not
work properly.

14 (L)

–

CAN-H

–

16 (Y)

–

CAN-L

–

Terminal

(Wire color)

Item

Signal

input/

output

Condition

Reference value

Example of

symptom

–

Ignition

switch

Operation

SKIA0176E

Terminal

(Wire color)

Item

Signal

input/

output

Condition

Reference value

Example of

symptom

–

Ignition

switch

Operation

1 (Y)

Ground

Battery power
supply

Input

OFF

–

Battery voltage

System does not
work properly.

2 (P/B)

Ground

ACC power
supply

Input

ACC

–

Battery voltage

System does not
work properly.

3 (R/L)

Ground

Illumination
signal

Input

Lighting switch
ON

Approx. 12V

A/C and AV
switch illumina-
tion does not
function when
lighting switch is
ON.

Lighting switch
OFF

Approx. 0V

4 (R/W)

Ground

Illumination
control signal

Input

Illumination
control switch
is operated by
lighting switch
in ON position

Changes between approx. 0 and
approx. 12V

A/C and AV
switch illumina-
tion cannot be
controlled.

5 (B)

Ground

–

Approx. 0V

–

6 (L/G)

Ground

Communica-
tion signal (+)

Input/

Output

Operate A/C
and AV switch

System does not
work properly.

Ground

Shield

–

Approx. 0V

–

8 (L/R)

Ground

Communica-
tion signal (–)

Input/

Output

Operate A/C
and AV switch

System does not
work properly.

SKIA0175E

SKIA0176E

AV-88

INTEGRATED DISPLAY SYSTEM

Revision: 2004 November

2004 Murano

12 (R)

Ground

Remote control
A

Input

Push MODE
switch

Approx. 0V

Audio steering
wheel switch
controls do not
function.

Push SEEK
UP switch

Approx. 1.7V

Push VOL UP
switch

Approx. 3.3V

Except for
above

Approx. 5V

13 (G)

Ground

Remote control
B

Input

Push POWER
switch

Approx. 0V

Audio steering
wheel switch
controls do not
function.

Push SEEK
DOWN switch

Approx. 1.7V

Push VOL
DOWN switch

Approx. 3.3V

Except for
above

Approx. 5V

14 (B/W)

Ground

Remote control
ground

–

Approx. 0V

Audio steering
wheel switch
controls do not
function.

16 (G/W)

Ground

Rear window
defogger switch
signal

Output

Push rear win-
dow defogger
switch

Approx. 0V

Rear window
defogger does
not operate.

–

Approx. 5V

Terminal

(Wire color)

Item

Signal

input/

output

Condition

Reference value

Example of

symptom

–

Ignition

switch

Operation

INTEGRATED DISPLAY SYSTEM

AV-89

Revision: 2004 November

2004 Murano

On Board Self-Diagnosis Function

AKS004XY

DESCRIPTION

●

Diagnosis function consists of the self-diagnosis mode performed automatically.

●

Self-diagnosis mode checks for connections between the units constituting this system, analyzes each
individual unit at the same time, and displays the results on the LCD screen.

DIAGNOSIS ITEM

Self-Diagnosis Mode

AKS004XZ

OPERATION PROCEDURES

Start the engine.

Turn the audio system OFF.

While pushing the “PAUSE/MUTE” switch, turn the volume con-
trol dial clockwise or counterclockwise for 30 clicks or more.
(When the self-diagnosis mode is started, a short beep will be
heard.)

Display unit connection check screen.

Select each connecting unit (IVCS, CHANGER, SATELLITE
RADIO).

Self-diagnosis screen is displayed.

●

Using the joystick, select each item, and perform diagnosis.

CAUTION:

If self-diagnosis cannot activated, refer to

AV-93, "Trouble

Diagnosis Chart by Symptom"

Mode

Item

Description

Reference page

Self-diagnosis

NETWORK CHECK

Check network between control unit and switch connected
from display unit via communication line.

AV-90, "NETWORK CHECK"

PARTS CHECK

●

Perform diagnosis and setting of display unit.

●

Perform self-diagnosis for auto air conditioner system.

AV-90, "PARTS CHECK"

VERSION CHECK

Displays version of each unit.

AV-91, "VERSION CHECK"

CAN DIAG MNTR

Display unit displays CAN communication status.

AV-91, "CAN DIAG MNTR
(CAN DIAG MONITOR)"

SKIA4376E

SKIA7773E

SKIA7774E

AV-90

INTEGRATED DISPLAY SYSTEM

Revision: 2004 November

2004 Murano

NETWORK CHECK

Selecting NETWORK CHECK on self-diagnosis screen, display self-
diagnostic results.

PARTS CHECK

●

Selecting PARTS CHECK on self-diagnosis screen, display
selection screen.

●

Select DISPLAY, indicate DISPLAY DETAIL screen. Display
diagnosis and setting can be performed.

●

Select HVAC, Indicate HVAC DETAIL screen. Auto air condi-
tioner system self-diagnosis can be performed.

Display Detail Screen

SKIA7775E

Diagnosis item

Contents

DTC return condition

Reference at error

HVAC

OK/NG

Communication error between unified meter and A/C amp. and dis-
play unit.

AV-101, "CAN Communica-
tion Line Check"

SWITCH

OK/NG

Communication error between A/C and AV switch and display unit.

AV-100, "A/C and AV Switch
Does Not Operate"

AUDIO

OK/NG

Communication error between audio and display unit.

AV-98, "Audio Communica-
tion Line Check"

SKIA7776E

Items

Description

FULL BLINK

All display unit segments turn ON.

BLANK–ADJ

Adjust the display timeout.

WARNING

Select warning indication ON/OFF.

SKIA7777E

INTEGRATED DISPLAY SYSTEM

AV-91

Revision: 2004 November

2004 Murano

HVAC DETAIL SCREEN

Push the joystick, start auto air conditioner system self-diagnosis.
Refer to

ATC-47, "Self-Diagnosis Function"

VERSION CHECK

Check ID and version of display, A/C and AV switch, and audio.

CAN DIAG MNTR (CAN DIAG MONITOR)

Display CAN communication status.

SKIA7778E

Items shown

Contents

CANCOMM

OK/NG

CAN1

OK/UNKWN

CAN2

OK/UNKWN

CAN3

OK/UNKWN

CAN4

OK/UNKWN

CAN5

OK/UNKWN

CAN6

OK/UNKWN

CAN7

OK/UNKWN

CAN8

OK/UNKWN

CAN9

OK/UNKWN

SKIA7779E

AV-92

INTEGRATED DISPLAY SYSTEM

Revision: 2004 November

2004 Murano

A/C and AV Switch Self-Diagnosis Function

AKS005FY

It can check ON/OFF operation of each switch in the A/C and AV switch and diagnose the input signals to the
audio steering wheel switch.

STARTING THE SELF-DIAGNOSIS MODE

Turn ignition switch from OFF to ACC.

Within 10 seconds push and hold the witches “PAUSE/MUTE”
and “PREV” simultaneously for 3 seconds.

DIAGNOSIS FUNCTION

The following are checked:

●

All the indicators (LED) in the A/C and AV switch.

●

Continuity of the switches by sounding the buzzer when the A/C and AV switch is pushed.

●

Continuity of harness between A/C and AV switch and audio steering wheel switch.

NOTE:

●

Indicators (LED) of REC/FRE switch change to “FRE”

→

“REC”

→

“FRE” every time the REC/FRE switch is

pushed. (These two do not turn on at a time.)

●

Impossible to check rear window defogger switch operation (No beep sound even under normal status).

EXITING THE SELF-DIAGNOSIS MODE

●

Turn ignition switch OFF.

SKIA4385E

INTEGRATED DISPLAY SYSTEM

AV-93

Revision: 2004 November

2004 Murano

Trouble Diagnosis Chart by Symptom

AKS005IF

Symptom

Check item

No screen is shown.

●

Display unit power supply and ground circuit. Refer to

AV-94, "Power Supply

and Ground Circuit Check for Display Unit"

●

Display unit

Screen does not switch to nighttime mode after the
lighting switch is turned ON.

●

Illumination signal. Refer to

AV-97, "Illumination Signal Check"

●

Display unit

TRIP and FUEL ECON screen do not appear.

●

Ignition signal. Refer to

AV-97, "Ignition Signal Check"

●

Display unit

●

Trip odometer (DIST) is not added up.

●

Average vehicle speed (AVG) is not displayed.

●

Vehicle speed signal. Refer to

AV-96, "Vehicle Speed Signal Check"

●

Display unit

Average fuel consumption (AVG) is not displayed.

●

Vehicle speed signal. Refer to

AV-96, "Vehicle Speed Signal Check"

●

CAN communication line. Refer to

AV-101, "CAN Communication Line Check"

●

Display unit

Distance to empty (DTE) is not displayed.

●

Check if speedometer operates. If it does not operate, go to

DI-19, "Vehicle

Speed Signal Inspection"

●

Check if fuel gauge operates. If it does not operate, go to

DI-22, "Fuel Level

Sensor Signal Inspection 1"

●

CAN communication line. Refer to

AV-101, "CAN Communication Line Check"

●

Display unit

Tire pressure is not displayed.

●

Ignition signal. Refer to

AV-97, "Ignition Signal Check"

●

Low tire pressure warning control unit. Refer to

WT-17, "Self-Diagnosis"

●

CAN communication line. Refer to

AV-101, "CAN Communication Line Check"

●

Display unit

Door warning screen does not appear.

●

Ignition signal. Refer to

AV-97, "Ignition Signal Check"

●

Vehicle speed signal. Refer to

AV-96, "Vehicle Speed Signal Check"

●

CAN communication line. Refer to

AV-101, "CAN Communication Line Check"

●

Display unit

A/C and AV switch and all switch operation are not
possible.
(Do not start self-diagnosis.)

Refer to

AV-100, "A/C and AV Switch Does Not Operate"

Air conditioner operation is not possible.

●

Ignition signal. Refer to

AV-97, "Ignition Signal Check"

●

A/C and AV switch. Refer to

AV-98, "A/C and AV Switch Check"

●

CAN communication line. Refer to

AV-101, "CAN Communication Line Check"

AV-94

INTEGRATED DISPLAY SYSTEM

Revision: 2004 November

2004 Murano

Power Supply and Ground Circuit Check for Display Unit

AKS005FF

CHECK FUSE

Make sure that the following fuses of the display unit are not blown.

OK or NG

>> GO TO 2.

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

PG-

3, "POWER SUPPLY ROUTING CIRCUIT"

CHECK POWER SUPPLY CIRCUIT

Check voltage between display unit harness connector terminals
and ground.

OK or NG

>> GO TO 3.

>> Repair harness or connector.

CHECK GROUND CIRCUIT

Turn ignition switch OFF.

Disconnect display unit connector.

Check continuity between display unit harness connector M39
terminal 6 (B) and ground.

OK or NG

>> INSPECTION END

>> Repair harness or connector.

Unit

Signal

Fuse No.

Display unit

Battery power supply

Ignition switch ACC or ON

Terminals

OFF

ACC

(+)

(–)

Connector

Terminal

(Wire color)

M39

1 (Y)

Ground

Battery
voltage

2 (P/B)

Ground

Battery
voltage

SKIB0373E

6 – Ground

: Continuity should exist.

SKIA9483E

INTEGRATED DISPLAY SYSTEM

AV-95

Revision: 2004 November

2004 Murano

Power Supply and Ground Circuit Check for A/C and AV Switch

AKS005FG

CHECK FUSE

Make sure that the following fuses of the A/C and AV switch are not blown

OK or NG

>> GO TO 2.

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

PG-

3, "POWER SUPPLY ROUTING CIRCUIT"

CHECK POWER SUPPLY CIRCUIT

Check voltage between A/C and AV switch harness connector termi-
nals and ground.

OK or NG

>> GO TO 3.

>> Repair harness or connector.

CHECK GROUND CIRCUIT

Turn ignition switch OFF.

Disconnect A/C and AV switch connector.

Check continuity between A/C and AV switch harness connector
M48 terminal 5 (B) and ground.

OK or NG

>> INSPECTION END

>> Repair harness or connector.

Unit

Signal

Fuse No.

A/C and AV switch

Battery power supply

Ignition switch ACC or ON

Terminals

OFF

ACC

(+)

(–)

Connector

Terminal

(Wire color)

M48

1 (Y)

Ground

Battery
voltage

2 (P/B)

Ground

Battery
voltage

SKIA9396E

5 – Ground

: Continuity should exist.

SKIA4988E

AV-96

INTEGRATED DISPLAY SYSTEM

Revision: 2004 November

2004 Murano

Vehicle Speed Signal Check

AKS005G9

VEHICLE SPEED OPERATION CHECK

Does speedometer is operated normally?
YES or NO

YES

>> GO TO 2.

>> Check combination meter trouble diagnosis. Refer to

DI-19, "Vehicle Speed Signal Inspection"

CHECK HARNESS

Turn ignition switch OFF.

Disconnect display unit, unified meter and A/C amp., combination meter, audio unit and shift lock control
unit connectors.

Check continuity between display unit harness connector M39
terminal 7 (V/W) and unified meter and A/C amp. harness con-
nector M50 terminal 26 (V/W).

Check continuity between display unit harness connector M39
terminal 7 (V/W) and ground.

OK or NG

>> GO TO 3.

>> Repair harness or connector.

CHECK DISPLAY UNIT

Connect display unit connector.

Turn ignition switch ON.

Check voltage between display unit harness connector M39 ter-
minal 7 (V/W) and ground.

OK or NG

>> GO TO 4.

>> Replace display unit.

7 – 26

: Continuity should exist.

7 – Ground

: Continuity should not exist.

SKIA4989E

7 – Ground

: Approx. 5V

SKIA4990E

INTEGRATED DISPLAY SYSTEM

AV-97

Revision: 2004 November

2004 Murano

CHECK VEHICLE SPEED SIGNAL

Turn ignition switch OFF.

Connect unified meter and A/C amp., combination meter, audio unit and shift lock control unit connectors.

Drive vehicle at a constant speed.

Check voltage waveform between display unit harness connec-
tor M39 terminal 7 (V/W) and ground using CONSULT-II or oscil-
loscope.

OK or NG

>> INSPECTION END

>> Replace unified meter and A/C amp. Refer to

DI-38,

"Removal and Installation of Unified Meter and A/C
Amp."

Illumination Signal Check

AKS005GA

CHECK ILLUMINATION SIGNAL

Turn ignition switch ON.

Check voltage between display unit harness connector terminals
and ground.

OK or NG

>> INSPECTION END

>> Repair harness or connector.

Ignition Signal Check

AKS005GB

CHECK IGNITION SIGNAL

Turn ignition switch ON.

Check voltage between display unit harness connector M39 ter-
minal 3 (G) and ground.

OK or NG

>> INSPECTION END

>> Repair harness or connector.

7 – Ground

: Refer to

AV-86, "Terminals

and Reference Value for Dis-
play Unit"

SKIA4991E

Terminals

Lighting switch position

(+)

(–)

Connector

Terminal

(Wire color)

OFF

M39

4 (R/L)

Ground

Approx. 12V

Approx. 0V

SKIA4393E

3 – Ground

: Battery voltage

SKIA9482E

AV-98

INTEGRATED DISPLAY SYSTEM

Revision: 2004 November

2004 Murano

A/C and AV Switch Check

AKS00AS1

CHECK A/C AND AV SWITCH SELF-DIAGNOSIS FUNCTION

Start A/C and AV switch self-diagnosis function. Refer to

AV-92, "A/C and AV Switch Self-Diagnosis Func-

tion"

Operate voluntary switch.

Does A/C and AV switch operate normally?

YES

>> INSPECTION END

>> GO TO 2.

CHECK A/C AND AV SWITCH POWER SUPPLY AND GROUND CIRCUIT

Check A/C and AV switch power supply and ground circuit. Refer to

AV-95, "Power Supply and Ground Circuit

Check for A/C and AV Switch"

OK or NG

>> Replace A/C and AV switch.

>> Repair malfunctioning parts.

Audio Communication Line Check

AKS005FK

CHECK HARNESS

Turn ignition switch OFF.

Disconnect audio unit and display unit connectors.

Check continuity between audio unit harness connector termi-
nals and display unit harness connector terminals.

Check continuity between display unit harness connector termi-
nals and ground.

OK or NG

>> GO TO 2.

>> Repair harness or connector.

Terminals

Continuity

Display unit

Audio unit

Connector

Terminal

(Wire color)

Connector

Terminal

(Wire color)

M39

8 (R/G)

M46

23 (R/G)

Yes

10 (R/Y)

21 (R/Y)

SKIA9935E

Terminals

Continuity

Display unit

Ground

Connector

Terminal (Wire color)

M39

8 (R/G)

10 (R/Y)

SKIA9936E

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