Nissan Murano Z50 (2003 year). Manual - part 24

NAVIGATION SYSTEM

AV-177

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6.

On the “SELF DIAGNOSIS” screen, each unit name will be col-
ored according to the diagnosis result, as follows.

●

If several malfunctions are present in a unit, color of its switch
on the screen will be either red, yellow, or gray, determined by
the malfunction of the highest priority.

7.

Select a switch on the “SELF DIAGNOSIS” screen and com-
ments for the diagnosis results will be shown.

●

When the switch is green, the following comment will be
shown. “Self-diagnosis was successful. Further diagnosis and
adjustments are recommended. Follow the “confirmation and
adjustments” menu or refer to the service manual.”.

●

When the switch is yellow, the following comment will be
shown. “Connection to the following unit is abnormal. See the
service manual for further details”.

●

When the switch is red, the following comment will be shown.
“Center Control Unit is abnormal”.

●

When the switch is gray, the following comment will be shown. “Self-diagnosis for DVD-ROM DRIVER
of NAVI was not conducted because no DVD-ROM was available.”.

SELF–DIAGNOSIS RESULT 
Quick Reference Table

1.

Select an malfunctioning diagnosis No. in the diagnosis result quick reference table.

2.

Find estimated malfunctioning system in the diagnosis No. table and perform check by referring to 

AV-

161, "Wiring Diagram — COMM —"

 .

3.

Turn the ignition switch OFF and perform self-diagnosis again.

*: Navigation = NAVI control unit

CAUTION:

●

When A/C and AV switch has a malfunction, you cannot start.

●

When display has a malfunction, you cannot start.

●

Check the following when the self-diagnosis mode cannot be used.

–

AV communication line between display control unit and A/C and AV switch. Refer to 

AV-202, "AV

Communication Line Check (Between Display Control Unit and A/C and AV Switch)"

 .

–

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

AV-192, "Power Supply and Ground

Circuit Check for A/C and AV Switch"

 .

–

Display communication line between display control unit and display. Refer to 

AV-200, "Display

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

 .

–

Display power supply and ground circuit. Refer to 

AV-190, "Power Supply and Ground Circuit

Check for Display"

 .

Green

: No malfunctioning.

Yellow

: Cannot be judged by self-diagnosis results.

Red

: Unit is malfunctioning.

Gray

: Diagnosis has not been done.

SKIA4214E

SKIA4211E

Screen switch

Diagnosis No.

Switch color

Navigation*

GPS antenna

Red

×

1

Gray

×

2

Yellow

×

3

×

4

×

×

5

AV-178

NAVIGATION SYSTEM

Revision; 2004 April

2003 Murano

Self-diagnosis Codes

CONFIRMATION/ADJUSTMENT Mode

AKS005R5

OPERATION PROCEDURE

1.

Start the engine.

2.

Turn the audio system off.

3.

While pressing the “PAUSE/MUTE” button, 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.)

●

Shifting from current screen to previous screen is performed
by pressing “PREV” button.

4.

The initial trouble diagnosis screen will be shown, and items
“Self-Diagnosis (DCU)”,“Self-Diagnosis (NAVI)”,“Confirmation/
Adjustment” and “CAN DIAG SUPPORT MONITOR” will
become selective.

Diagnosis 

No.

Possible cause

Reference 

page

1

NAVI control unit malfunction

Refer to

AV-230

2

No map DVD-ROM is inserted in the NAVI control unit.

Refer to

AV-203

3

When “DVD-ROM error. Please check disc.” is shown.

1. Eject map DVD-ROM and check if it is compatible with the system.

2. Check ejected DVD-ROM for dirt, damage, and warpage.

3. If no error is found, insert a known good map DVD-ROM of the same type and perform self-diagno-

sis again. If same result is shown, the NAVI control unit is malfunctioning. If result is normal, the map 
DVD-ROM is malfunctioning.

Refer to

AV-203

4

If “Error found in DVD-ROM or DVD-ROM driver in control unit. Please perform diagnosis in accor-
dance with service manual” is shown, carry out same inspection as diagnosis No. 3.

Refer to

AV-203

5

GPS antenna system

1. Visually check for a broken wire in the GPS antenna coaxial cable.

2. Disconnect GPS antenna connector, and make sure approximately 5V is supplied from the NAVI 

control unit. If not, the NAVI control unit is malfunctioning. If 5V is supplied, replace the GPS 
antenna. If the connection is still malfunction after the replacement of the GPS antenna, the NAVI 
control unit is malfunctioning.

Refer to

AV-204

SKIA4206E

SKIA4207E

NAVIGATION SYSTEM

AV-179

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5.

When “Confirmation/Adjustment” is selected on the initial trouble
diagnosis screen, the operation will enter the CONFIRMATION/
ADJUSTMENT mode. In this mode, check and adjustment of
each item will become possible.

6.

The initial trouble diagnosis screen will be shown, and items
“Display Diagnosis”,“Vehicle Signals”,“Auto Climate Control”
and “Navigation” will become selective.

7.

Select each switch on “CONFIRMATION/ADJUSTMENT”
screen to display the relevant diagnosis screen.

DISPLAY DIAGNOSIS 

●

When RGB signal error occurred in the RGB system, tone of the color bar will change as follows.

●

When the color of the screen looks unusual, refer to 

AV-208, "Color of RGB Image is Not Proper (Except-

ing NAVI Screen Looks Bluish)"

  ,

AV-209, "Color of RGB Image is Not Proper (Excepting NAVI Screen

Looks Reddish)"

  and 

AV-210, "Color of RGB Image is Not Proper (Excepting NAVI Screen Looks Yellow-

ish)"

 .

VEHICLE SIGNALS 

●

A comparison check can be made of each actual vehicle signal
and the signals recognized by the system.

CAUTION:

In case of confirming light signal, set D/N mode to ON/OFF
of lighting switch (normal setting).

●

OFF: D (Day mode)

●

ON: N (Night mode)

Unless above setting, light signal (ON/OFF) may not be
accurately displayed.

SKIA4220E

SKIA4602E

R (red) signal error

: Screen looks bluish

G (green) signal error

: Screen looks reddish

B (blue) signal error

: Screen looks yellowish

SKIA5628E

AV-180

NAVIGATION SYSTEM

Revision; 2004 April

2003 Murano

●

If vehicle speed is NG, refer to 

AV-193, "Vehicle Speed Signal Check for Display Control Unit"

 .

●

If light is NG, refer to 

AV-195, "Illumination Signal Check for Display Control Unit"

 .

●

If IGN is NG, refer to 

AV-196, "Ignition Signal Check for Display Control Unit"

 .

●

If reverse is NG, refer to 

AV-196, "Reverse Signal Check for Display Control Unit"

 .

AUTO CLIMATE CONTROL

●

Refer to ATC Automatic Air Conditioner 

ATC-68, "Self-diagnosis Function"

  for details.

NAVIGATION

1.

The initial trouble diagnosis screen will be shown, and items
“Display Diagnosis”, “Vehicle Signals”, “History of Errors” and
“Navigation” will become selective.

2.

Select each switch on “CONFIRMATION/ADJUSTMENT”
screen to display the relevant diagnosis screen.

DISPLAY DIAGNOSIS 

●

When RGB signal error occurred in the RGB system, tone of the color bar will change as follows.

Diagnosis item

Display

Condition

Remarks

Vehicle speed

ON

Vehicle speed > 0 km/h  (0 MPH)

Changes in indication may be delayed by 
approx. 1.5 seconds. This is normal.

OFF

Vehicle speed = 0 km/h  (0 MPH)

–

Ignition switch in ACC position

Light

ON

Lighting switch ON

–

OFF

Lighting switch OFF

IGN

ON

Ignition switch ON

–

OFF

Ignition switch ACC or OFF

Reverse

ON

Selector lever in R position

Changes in indication may be delayed by 
approx. 1.5 seconds. This is normal.

OFF

Selector lever in other than R position

–

Ignition switch in ACC position

SKIA4226E

SKIA0362E

NAVIGATION SYSTEM

AV-181

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●

When the color of the screen looks unusual, refer to 

AV-205, "Color of RGB Image is Not Proper (NAVI

Screen Looks Bluish)"

 ,

AV-206, "Color of RGB Image is Not Proper (NAVI Screen Looks Reddish)"

  and

AV-207, "Color of RGB Image is Not Proper (NAVI Screen Looks Yellowish)"

 .

VEHICLE SIGNALS 

●

A comparison check can be made of each actual vehicle signal
and the signals recognized by the system.

CAUTION:

In case of confirming light signal, set D/N mode to ON/OFF
of light switch (normal setting).

●

OFF: D (Day mode)

●

ON: N (Night mode)

Unless above setting, light signal (ON/OFF) may not be
accurately displayed.

●

If vehicle speed is NG, refer to 

AV-192, "Vehicle Speed Signal Check for NAVI Control Unit"

 .

●

If light is NG, refer to 

AV-195, "Illumination Signal Check for NAVI Control Unit"

 .

●

If IGN is NG, refer to 

AV-195, "Ignition Signal Check for NAVI Control Unit"

 .

●

If reverse is NG, refer to 

AV-196, "Reverse Signal Check for NAVI Control Unit"

 .

R (red) signal error

: Screen looks bluish

G (green) signal error

: Screen looks reddish

B (blue) signal error

: Screen looks yellowish

SKIA5628E

Diagnosis item

Display

Condition

Remarks

Vehicle speed

ON

Vehicle speed > 0 km/h  (0 MPH)

Changes in indication may be delayed by 
approx. 1.5 seconds. This is normal.

OFF

Vehicle speed = 0 km/h  (0 MPH)

–

Ignition switch in ACC position

Light

ON

Lighting switch ON

–

OFF

Lighting switch OFF

IGN

ON

Ignition switch ON

–

OFF

Ignition switch ACC or OFF

Reverse

ON

Selector lever in R position

Changes in indication may be delayed by 
approx. 1.5 seconds. This is normal.

OFF

Selector lever in other than R position

–

Ignition switch in ACC position

AV-182

NAVIGATION SYSTEM

Revision; 2004 April

2003 Murano

HISTORY OF ERRORS 

DIAGNOSIS BY HISTORY OF ERRORS

The “Self-diagnosis” results indicate whether an error occurred during the period from when the ignition switch
is turned to ON until “Self-diagnosis” is completed.
If an error occurred before the ignition switch was turned to ON and does not occur again until the “Self-diag-
nosis” is completed, the diagnosis result will be judged normal. Therefore, those errors in the past, which can-
not be found by the “Self-diagnosis”, must be found by diagnosing the “History of Errors”.
The History of Errors displays the time and place of the most recent occurrence of that error. However, take
note of the following points.

●

Correct time of the error occurrence may not be displayed when the GPS antenna substrate within the
NAVI control unit has malfunctioned.

●

Place of the error occurrence is represented by the position of the current-location mark at the time when
the error occurred. If the current-location mark has deviated from the correct position, then the place of
the error occurrence max be located correctly.

●

The maximum number of occurrences which can be stored is 50. For the 51st and later occurrences, the
displayed number remains 50.

When a reproducible malfunction occurred but its cause cannot be identified because several errors are
present, record the item, number and place (longitude/latitude) of error occurrence (or delete the History of
Errors), then turn the ignition switch from OFF to ON to reproduce the malfunction. Check the History of Errors
to find the items which show an increased number of occurrences, and diagnose the item.

SKIA0366E

Error item

Possible causes

Example of symptom

Action/symptom

Gyro sensor 
disconnected

Communications malfunction between NAVI control unit and inter-
nal gyro

●

Navigation location detection performance 
has deteriorated.
(Angular velocity cannot be detected.)

●

Perform self-diagnosis.

●

When the NAVI control unit is judged normal by self-diagnosis, 
the symptom may be intermittent, caused by strong radio inter-
ference.

GPS discon-
nected

Communication error between NAVI control unit and internal GPS 
substrate

●

Navigation location detection performance 
has deteriorated.
(Location correction using GPS is not per-
formed.)

●

GPS receiving status remains gray.

●

Perform self-diagnosis.

●

When the NAVI control unit is judged normal by self-diagnosis, 
the symptom may be intermittent, caused by strong radio inter-
ference.

NAVIGATION SYSTEM

AV-183

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GPS trans-
mission cable 
malfunction

Malfunctioning transmission wires to NAVI control unit and internal 
GPS substrate

●

During self-diagnosis, GPS diagnosis is not 
performed.

●

Perform self-diagnosis.

●

When the NAVI control unit is judged normal by self-diagnosis, 
the symptom may be intermittent, caused by strong radio inter-
ference.

GPS input 
line connec-
tion error

Malfunctioning receiving wires to NAVI control unit and internal 
GPS substrate

●

Navigation location detection performance 
has deteriorated.
(Location correction using GPS is not per-
formed.)

●

GPS receiving status remains gray.

●

Perform self-diagnosis.

●

When the NAVI control unit is judged normal by self-diagnosis, 
the symptom may be intermittent, caused by strong radio inter-
ference.

GPS TCX0 
over
GPS TCX0 
under

Oscillating frequency of the GPS substrate frequency synchroniz-
ing oscillation circuit exceeded (or below) the specification

●

Navigation location detection performance 
has deteriorated.
(Location correction using GPS is not per-
formed.)

●

GPS receiving status remains gray.

●

Perform self-diagnosis.

●

When the NAVI control unit is judged normal by self-diagnosis, 
the symptom may be intermittent, caused by strong radio inter-
ference, or the control unit may have been subjected to exces-
sively high or low temperatures.

GPS ROM 
malfunction
GPS RAM 
malfunction

Contents of ROM (or RAM) in GPS substrate are malfunctioning.

●

Location detection accuracy of the navigation 
system will deteriorate, depending on the error 
area in the memory, because GPS cannot 
make correct positioning.
(Location correction using GPS is not per-
formed.)

●

Perform self-diagnosis.

●

When the NAVI control unit is judged normal by self-diagnosis, 
the symptom may be intermittent, caused by strong radio inter-
ference.

GPS RTC 
malfunction

Clock IC in GPS substrate is malfunctioning.

●

Correct time may not be displayed.

●

After the power is turned on, the system 
always takes some time until GPS positioning 
becomes possible. (The GPS receiver starts 
positioning without re-collecting the whole sat-
ellite information when it judged the data 
stored in the receiver is correct.)

●

Correct time of error occurrence may not be 
stored in the 

″

History of Errors

″

.

●

Perform self-diagnosis.

●

When the NAVI control unit is judged normal by self-diagnosis, 
the symptom may be intermittent, caused by strong radio inter-
ference.

GPS antenna 
disconnected

Malfunctioning connection between GPS substrate in NAVI control 
unit and GPS antenna.

●

Navigation location detection performance 
has deteriorated.
(Location correction using GPS is not per-
formed.)

●

GPS receiving status remains gray.

●

Perform self-diagnosis.

●

When connection between NAVI control unit and GPS antenna 
is judged normal by self-diagnosis, the symptom may be inter-
mittent, caused by impact or vibration.

Low voltage 
of GPS

The power voltage supplied to the GPS circuit board has 
decreased.

●

Navigation location detection performance 
has deteriorated.
(Location correction using GPS is not per-
formed.)

●

GPS receiving status remains gray.

●

Perform self-diagnosis.

●

When connection between NAVI control unit and GPS antenna 
is judged normal by self-diagnosis, the symptom may be inter-
mittent, caused by impact or vibration.

Error item

Possible causes

Example of symptom

Action/symptom

AV-184

NAVIGATION SYSTEM

Revision; 2004 April

2003 Murano

NAVIGATION

1.

The initial trouble diagnosis screen will be shown, and items
“Display Longitude & Latitude”,“Speed Calibration”,“Angle
Adjustment” and “Initialize Location” will become selective.

2.

Select each switch on “NAVIGATION” screen to display the rele-
vant diagnosis screen.

Display Longitude & Latitude 

●

Able to confirm/adjust longitude and latitude.

Angle adjustment 

●

Adjusts turning angle output detected by the gyroscope.

DVD-ROM 
Malfunction
DVD-ROM 
Read error
DVD-ROM 
Response 
Error

Malfunctioning NAVI control unit

-

Dedicated map DVD-ROM is in the system, but the data cannot be 
read.

●

The map of a particular location cannot be dis-
played.

●

Specific guidance information cannot be dis-
played.

●

Map display is slow.

●

Guidance information display is slow.

●

System has been affected by vibration.

●

Is map DVD-ROM damaged, warped, or dirty?

–

If damaged or warped, the map DVD-ROM is malfunctioning.

–

If dirty, wipe the DVD-ROM clean with a soft cloth.

●

Perform self-diagnosis.

●

When NAVI control unit is judged normal by self-diagnosis, the 
symptom is judged intermittent, caused by vibration.

Error item

Possible causes

Example of symptom

Action/symptom

SKIA4576E

SKIA4575E

SKIA0364E

NAVIGATION SYSTEM

AV-185

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Speed Calibration

●

During normal driving, distance error caused by tire wear and
tire pressure change is automatically adjusted for by the auto-
matic distance correction function. This function, on the other
hand, is for immediate adjustment, in cases such as driving with
tire chain fitted on tires.

Initialize Location

●

This mode is for initializing the current location.

SKIA0365E

AV-186

NAVIGATION SYSTEM

Revision; 2004 April

2003 Murano

CAN DIAG SUPPORT MONITOR

AKS005R6

OPERATION PROCEDURE 

1.

Start the engine.

2.

Turn the audio system off.

3.

While pressing the “PAUSE/MUTE” button, 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.)

●

Shifting from current screen to previous screen is performed
by pressing “PREV” button.

4.

The initial trouble diagnosis screen will be shown, and items
“Self-Diagnosis (DCU)”, “Self-Diagnosis (NAVI)”, “Confirmation/
Adjustment” and “CAN DIAG SUPPORT MONITOR” will
become selective.

5.

Select “CAN DIAG SUPPORT MONITOR”.

6.

Display status of CAN communication.

NOTE:
Counter shows the status of CAN communication.

SKIA4206E

SKIA4207E

Item

Content

Error counter

(Reference value)

CANCOMM

OK/NG

0-50

CAN_CIRC_1

OK/UNKWN

0-50

CAN_CIRC_2

OK/UNKWN

0-50

CAN_CIRC_3

OK/UNKWN

0-50

CAN_CIRC_4

OK/UNKWN

0-50

CAN_CIRC_5

OK/UNKWN

0-50

CAN_CIRC_6

OK/UNKWN

0-50

CAN_CIRC_7

OK/UNKWN

0-50

CAN_CIRC_8

OK/UNKWN

0-50

CAN_CIRC_9

OK/UNKWN

0-50

SKIA4288E

NAVIGATION SYSTEM

AV-187

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A/C and AV Switch Self-Diagnosis Function

AKS005R7

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

STARTING THE SELF-DIAGNOSIS MODE

1.

Turn ignition switch from OFF to ACC.

2.

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

Then the self-diagnosis operates.

EXITING THE SELF-DIAGNOSIS MODE

●

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

DIAGNOSIS FUNCTION

●

It can illuminate all the indicators (LED) in the A/C and AV switch.

●

It can check for continuity of the switches by sounding the buzzer when the A/C and AV switch is pressed.

●

It can check for continuity of harness between A/C and AV switch and steering switch (audio).

SKIA4385E

AV-188

NAVIGATION SYSTEM

Revision; 2004 April

2003 Murano

Power Supply and Ground Circuit Check for NAVI Control Unit

AKS004RH

1. 

CHECK FUSE

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

OK or NG

OK

>> GO TO 2.

NG

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

PG-3,

"POWER SUPPLY ROUTING CIRCUIT"

 .

2. 

CHECK POWER SUPPLY CIRCUIT

Check voltage between connector terminals and ground as follows.

OK or NG

OK

>> GO TO 3.

NG

>> Check harness for open or short between NAVI control unit and fuse.

3. 

CHECK GROUND CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect NAVI control unit connector.

3.

Check continuity between the following NAVI control unit and
ground.

OK or NG

OK

>> INSPECTION END

NG

>> Repair or replace harness.

Terminals

Power source

Fuse No.

Connector

Terminal (Wire color)

M62

2 (Y), 3 (Y)

Battery power

38

6 (P/B)

ACC power

6

Terminals

Ignition switch position

(+)

(–)

OFF

ACC

ON

Connector

Terminal

 (Wire color)

M62

2 (Y), 3 (Y)

Ground

Battery 
voltage

Battery 
voltage

Battery 
voltage

6 (P/B)

0V

Battery 
voltage

Battery 
voltage

SKIA8932E

Terminals

Ignition switch

Continuity

(+)

(–)

Connector

Terminal (Wire color)

M62

1 (B), 4 (B)

Ground

OFF

Yes

PKIA2853E

NAVIGATION SYSTEM

AV-189

C

D

E

F

G

H

I

J

L

M

A

B

AV

Revision; 2004 April

2003 Murano

Power Supply and Ground Circuit Check for Display Control Unit

AKS005G3

1. 

CHECK FUSE

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

OK or NG

OK

>> GO TO 2.

NG

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

PG-3,

"POWER SUPPLY ROUTING CIRCUIT"

 .

2. 

CHECK POWER SUPPLY CIRCUIT

Check voltage between connector terminals and ground as follows.

OK or NG

OK

>> GO TO 3.

NG

>> Check harness for open or short between display control unit and fuse.

3. 

CHECK GROUND CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect display control unit connector.

3.

Check continuity between the following display control unit and
ground.

OK or NG

OK

>> INSPECTION END

NG

>> Repair or replace harness.

Terminals

Power source

Fuse No.

Connector

Terminal (Wire color)

M42

1 (Y)

Battery power

38

10 (P/B)

ACC power

6

Terminals

Ignition switch position

(+)

(–)

OFF

ACC

ON

Connector

Terminal

 (Wire color)

M42

1 (Y)

Ground

Battery 
voltage

Battery 
voltage

Battery 
voltage

10 (P/B)

0V

Battery 
voltage

Battery 
voltage

SKIA8930E

Terminals

Ignition switch

Continuity

(+)

(–)

Connector

Terminal (Wire color)

M42

3 (B)

Ground

OFF

Yes

PKIA2855E

AV-190

NAVIGATION SYSTEM

Revision; 2004 April

2003 Murano

Power Supply and Ground Circuit Check for Display

AKS005G4

1. 

CHECK POWER SUPPLY AND GROUND CIRCUIT FOR DISPLAY CONTROL UNIT

Check power supply and ground circuit for display control unit. Refer to 

AV-189, "Power Supply and Ground

Circuit Check for Display Control Unit"

 .

OK or NG

OK

>> GO TO 2.

NG

>> Repair malfunctioning parts.

2. 

 CHECK1: POWER SUPPLY CIRCUIT

1.

Turn ignition switch ON.

2.

Check voltage between display  unit harness connector M38 ter-
minals 2 (L/W), 3 (L/Y) and ground.

OK or NG

OK

>> GO TO 3.

NG

>> GO TO 4.

3. 

CHECK GROUND CIRCUIT

Check continuity between display and ground as follows.

1.

OK or NG

OK

>> INSPECTION END

NG

>> Repair harness.

Approx. 9 V

SKIA8934E

Terminals

Ignition 

switch

Continuity

 (+)

(–)

Connector

Terminal (Wire color)

M38

1 (B)

Ground

OFF

Yes

SKIA5953E

NAVIGATION SYSTEM

AV-191

C

D

E

F

G

H

I

J

L

M

A

B

AV

Revision; 2004 April

2003 Murano

4. 

CHECK HARNESS

1.

Turn ignition switch OFF.

2.

Disconnect display connector and display control unit connector.

3.

Check continuity between display control unit harness connector
M42 terminals 2(L/W), 4(L/Y) and display harness connector
M38 terminals 2(L/W), 3(L/Y).

4.

Check continuity between display and ground.

OK or NG

OK

>> Replace display control unit.

NG

>> Repair harness.

Continuity should exist.

Terminals

Continuity

display (+)

(–)

Connector

Terminal (Wire color)

M38

2 (L/W)

Ground

No

3 (L/Y)

SKIA4471E

AV-192

NAVIGATION SYSTEM

Revision; 2004 April

2003 Murano

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

AKS005LU

1. 

CHECK FUSE

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

OK or NG

OK

>> GO TO 2.

NG

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

PG-3,

"POWER SUPPLY ROUTING CIRCUIT"

 .

2. 

CHECK POWER SUPPLY CIRCUIT

Check voltage between connector terminals and ground as follows.

OK or NG

OK

>> GO TO 3.

NG

>> Check harness for open or short between A/C and AV switch and fuse.

3. 

CHECK GROUND CIRCUIT

1.

Turn ignition switch OFF. 

2.

Disconnect A/C and AV switch connector.

3.

Check continuity between A/C and AV switch and ground as fol-
lows.

OK or NG

OK

>> INSPECTION END

NG

>> Repair or replace harness.

Vehicle Speed Signal Check for NAVI Control Unit

AKS004RI

1. 

SPEEDOMETER FUNCTION CHECK

Does speedometer is operated normally?

Yes or No

Yes

>> GO TO 2.

No

>> Check combination meter trouble diagnosis. Refer to 

DI-15, "Diagnosis Flow"

 .

Terminals

Power source

Fuse No.

Connector

Terminal (Wire color)

M48

1 (Y)

Battery power

38

2 (P/B)

ACC power

6

Terminals

Ignition switch position

(+)

(–)

OFF

ACC

ON

Connector

Terminal 

(Wire color)

M48

1 (Y)

Ground

Battery 
voltage

Battery 
voltage

Battery 
voltage

2 (P/B)

0V

Battery 
voltage

Battery 
voltage

SKIA9396E

Terminals

Ignition switch

Continuity

(+)

(–)

Connector

Terminal (Wire color)

M48

5 (B)

Ground

OFF

Yes

PKIA2860E