Nissan Titan A60. Instruction — part 96
AV
DIAGNOSIS SYSTEM (NAVI CONTROL UNIT)
AV-209
< SYSTEM DESCRIPTION >
[PREMIUM WITH NAVIGATION]
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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 instructionly.
• 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
AV
DIAGNOSIS SYSTEM (NAVI CONTROL UNIT)
AV-211
< SYSTEM DESCRIPTION >
[PREMIUM WITH NAVIGATION]
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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 instruction.”
• When the switch is yellow, the following comment will be
shown. “Connection to the following unit is abnormal. See the
service instruction 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
.
• When display unit has a malfunction, you cannot start. Refer to
AV-224, "DISPLAY CONTROL UNIT :
.
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
×
1
Gray
×
x
2
x
x
3
×
×
×
4
Diagnosis
No.
Possible cause
Reference
page
1
Display control unit malfunction
Refer to
2
Display communication line between display control unit and display unit
Refer to
3
Audio unit power supply and ground circuit
Audio communication line between display control unit and audio unit
Refer to
4
NAVI control unit power supply and ground circuit
AV communication line between display control unit and NAVI control unit
Refer to
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 instruction 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 instruction 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 instruction 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
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