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Nissan Titan A60. Manual - part 96

DIAGNOSIS SYSTEM (NAVI CONTROL UNIT)

AV-209

< SYSTEM DESCRIPTION >

[PREMIUM WITH NAVIGATION]

DIAGNOSIS SYSTEM (NAVI CONTROL UNIT)

Diagnosis Description

INFOID:0000000006166571

DESCRIPTION

• Diagnosis function consists of the self-diagnosis mode performed automatically and the CONFIRMATION/

ADJUSTMENT mode operated manually.

• Self-diagnosis mode checks for connections between the units constituting this system, analyzes each indi-

vidual unit at the same time, and displays the results on the LCD screen.

• CONFIRMATION/ADJUSTMENT mode is used to perform trouble diagnosis that require operation and judg-

ment by an operator (trouble that cannot be automatically judged by the system), to check/change the set

value, and to display the Error History of the navigation system.

Work Flow

INFOID:0000000006166572

ON BOARD SELF-DIAGNOSIS FUNCTION

Diagnosis Item

NOTE:

Make the status that is set by D/N function be shown.

SELF-DIAGNOSIS MODE (DCU)

1. Start the engine.
2. Turn the audio system off.

Mode

Description

Self-diagnosis (DCU)

Display control unit diagnosis.

Self-diagnosis (NAVI)

• NAVI Control unit diagnosis (DVD-ROM drive) will not be diagnosed

when no map DVD-ROM is in it.

• Analyzes connection between the NAVI control unit and the GPS anten-

na and operation of each unit.

CONFIRMATION/
ADJUSTMENT

Display diagnosis

On display control unit mode, color tone and shading of the screen can be
checked by the display of a color bar and a gray scale.

Vehicle signals

On display control unit mode, analyzes the following vehicle signals: Vehi-
cle speed signal, light signal

NOTE

, ignition switch signal, and reverse sig-

nal.

Auto Climate Control (if equipped)

A/C self-diagnosis of A/C system.

Navigation

Display diagnosis

On NAVI C/U mode, color tone and shading of the screen can be checked
by the display of a color bar and a gray scale.

Vehicle signals

On NAVI C/U mode, analyzes the following vehicle signals: Vehicle speed
signal, light signal, ignition switch signal, and reverse signal.

Error History

Diagnosis results previously stored in the memory (before turning ignition
switch ON) are displayed in this mode. Time and location when/where the
errors occurred are also displayed.

Naviga-
tion

Speed Cali-
bration

Under ordinary conditions, the navigation system distance measuring func-
tion will automatically compensate for minute decreases in wheel and tire
diameter caused by tire wear or low-pressure. Speed calibration immedi-
ately restores system accuracy in cases such as when distance calibration
is needed because of the use of tire chains in inclement weather.

Steering An-
gle Adjust-
ment

Corrects difference between actual turning angle of a vehicle and turning
angle of the car mark on the display.

CAN DIAG SUPPORT MONITOR

Display status of CAN communication.

AV-210

< SYSTEM DESCRIPTION >

[PREMIUM WITH NAVIGATION]

DIAGNOSIS SYSTEM (NAVI CONTROL UNIT)

3. While pressing the “MEMORY 4” button, turn the volume control

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 “BACK” button.

4. The initial self-diagnosis screen will be shown, and items “Self-

Diagnosis (DCU)”, “Self-Diagnosis (NAVI)”, “Confirmation/

Adjustment” and “CAN DIAG SUPPORT MONITOR” will

become selective.

5. Perform self-diagnosis by selecting the “Self-Diagnosis”.

• Self-diagnosis subdivision screen will be shown and the oper-

ation enters the self-diagnosis mode.

• A bar graph shown below the self-diagnosis subdivision

screen indicates progress of the diagnosis.

6. When the self-diagnosis completes, optional part confirmation

screen will be shown.

• When connection of an optional part is judged error, a screen

to check if the optional part is actually fitted on the vehicle or

not will be shown. When fitted, select the switch of the part on

the screen and press “End”. Then the “SELF DIAGNOSIS”

screen will be shown.

• When the optional part is connected normally, the switch for

the part will not appear on the screen.

7. 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.

ALNIA0749GB

SKIA4207E

SKIA4208E

SKIA4209E

Green

: Not malfunctioning.

Yellow

: Cannot be judged by self-diagnosis results.

Red

: Unit is malfunctioning.

Gray

: Diagnosis has not been done.

ALNIA0750GB

DIAGNOSIS SYSTEM (NAVI CONTROL UNIT)

AV-211

< SYSTEM DESCRIPTION >

[PREMIUM WITH NAVIGATION]

8. 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/

adjustment” 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.

“DCU is abnormal”.

SELF–DIAGNOSIS RESULT

Quick reference table

1. Select a malfunctioning diagnosis No. in the diagnosis result quick reference table.
2. Find estimated malfunctioning system in the diagnosis No. table and perform check.
3. Turn the ignition switch OFF and perform self-diagnosis again.

*: DCU = Display control unit

CAUTION:

• When AV switch has a malfunction, you cannot start. Refer to

AV-208, "AV SWITCH : Component

Function Check"

• When display unit has a malfunction, you cannot start. Refer to

AV-224, "DISPLAY CONTROL UNIT :

Diagnosis Procedure"

Self-Diagnosis Codes

SELF-DIAGNOSIS MODE (NAVI)

1. Start the engine.
2. Turn the audio system off.
3. While pressing the “MEMORY 4” button, turn the volume control

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 “BACK” button.

SKIA4211E

Screen switch

Diagnosis No.

Switch color

DCU*

DISPLAY

Audio unit

Navigation

GPS an-

tenna

Red

Gray

Diagnosis

No.

Possible cause

Reference

page

Display control unit malfunction

Refer to

AV-224

Display communication line between display control unit and display unit

Refer to

AV-274

Audio unit power supply and ground circuit
Audio communication line between display control unit and audio unit

Refer to

AV-222

NAVI control unit power supply and ground circuit
AV communication line between display control unit and NAVI control unit

Refer to

AV-222

ALNIA0749GB

AV-212

< SYSTEM DESCRIPTION >

[PREMIUM WITH NAVIGATION]

DIAGNOSIS SYSTEM (NAVI CONTROL UNIT)

4. The initial self-diagnosis screen will be shown, and items “Self-

Diagnosis (DCU)”, “Self-Diagnosis (NAVI)”, “Confirmation/

Adjustment” and “CAN DIAG SUPPORT MONITOR” will

become selective.

5. Perform self-diagnosis by selecting the “Self-diagnosis (NAVI)”.

• Self-diagnosis subdivision screen will be shown and the oper-

ation enters the self-diagnosis mode.

• A bar graph will be shown on the screen to indicate progress

of the diagnosis.

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 did not detect any error. Please refer to

the Confirmation / Adjustment function or service manual for

more detailed diagnosis information."

• 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.

“Detected connection error(s) are the following. Please refer to the confirmation/adjustment function or

service manual for more detailed diagnosis information.”

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

SKIA4207E

WKIA4440E

Green

: Not malfunctioning.

Yellow

: Cannot be judged by self-diagnosis results.

Red

: Unit is malfunctioning.

Gray

: Diagnosis has not been done.

WKIA4649E

ALNIA0751GB

Content .. 94 95 96 97 ..