NISSAN TEANA 2003 Service Manual

INTEGRATED COLOR DISPLAY SYSTEM
AV-83
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Terminals and Reference Value for Rear View Camera Control UnitBKS0027U
Terminal
(Wire color)
ItemSignal
input/
outputCondition
Reference value
+–Ignition
switchOperation
1 (Y) Ground Battery power supply Input OFF — Battery voltage
2 (V) Ground ACC power supply Input ACC — Battery voltage
3 (B) Ground Ground — ON — Approx. 0 V
4 (G/W) Ground Reverse signal Input ONSelector lever in R position Approx. 12 V
Other than selector lever in
R positionApprox. 0 V
5 (BR/W) GroundCamera-connection
recognition signalOutput ON — Approx. 0 V
6 (O) —Data transmit/receive
signal—— — —
8 (P) Ground Camera power supply Output ONSet the selector lever in R
position, and then display
the rear view imageApprox. 6 V
9 — Shield — — — —
10 (W) GroundRear view image
signalInput ONSet the selector lever in R
position, and then display
the rear view image
11 — Shield — — — —
12 (BR) GroundRear view image
signalOutput ONSet the selector lever in R
position, and then display
the rear view image
SKIB3608E
SKIB3608E

AV-84
INTEGRATED COLOR DISPLAY SYSTEM

Special Note for Trouble DiagnosisBKS0027V
Prior to performing trouble diagnosis, make sure there are no corresponding description in the “Example of
Symptoms Possible No Malfunction”. Refer to AV- 111 , "
Example of Symptoms Possible No Malfunction" .
A/C and AV Switch Self-Diagnosis FunctionBKS00280
Performing self-diagnosis makes it possible to check operation of A/C and AV switch indicator (LED) and other
switches.
STARTING THE SELF-DIAGNOSIS MODE
1. Turn ignition switch OFF.
2. With three switches (DEF, REC/FRE and MODE) pressed simul-
taneously, turn the ignition switch to ACC.
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 pressing the A/C and AV switch.

Continuity of the switches by sounding the buzzer when pressing the rear audio control switch.
NOTE:

Indicators (LED) of REC/FRE switch change to “FRE” → “REC” → “FRE” every time the REC/FRE switch
is pressed. (These two do not turn on at the same 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.
SKIB1188E

INTEGRATED COLOR DISPLAY SYSTEM
AV-85
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On Board Self-Diagnosis FunctionBKS0027W
DESCRIPTION

Trouble diagnosis function of system has a self-diagnosis mode by automatic operation and a confirma-
tion mode by manual operation.

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 display.

Confirmation mode displays trouble diagnosis that require an operation and a judgment by a human
(auto-decision cannot be performed by the system), and an error history of system.
DIAGNOSIS ITEM
Mode Description
DCU Failure Diagnosis

Display control unit diagnosis

Analyzes connection between the display control unit and each unit, and operation of
each unit.
DCU
ConfirmationDCUDisplay DiagnosisColor tone and shading of the display control unit-generated image can be checked by
the display of a color bar and a gray scale.
Vehicle SignalDiagnosis of signals that are input to display control unit can be performed for speed sig-
nal, Light, IGN and Reverse.
History of ErrorMalfunctions that occurred in the past are displayed, along with the number of times each
has occurred.
Software Version Software version of each unit is displayed.
HVAC Self-diagnosis of air conditioner system is performed.
CAN Diagnosis The transmitting/receiving of CAN communication can be monitored.

AV-86
INTEGRATED COLOR DISPLAY SYSTEM

OPERATION PROCEDURE
1. Start the engine.
2. Turn the audio system OFF.
3. While pressing the “MUTE” 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.)
4. The initial diagnosis screen is displayed.
5. The item of “DCU Failure Diagnosis” and “DCU Confirmation”
can be selected.

Select each item with “FM” button and “AM” button of A/C and
AV switch, and then determine by “CD·CHG” button.

When pressing “3 RANDOM” button of A/C and AV switch,
return to the previous screen.
SKIB8825E
SKIB0829E
SKIB1985E

INTEGRATED COLOR DISPLAY SYSTEM
AV-87
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Self-Diagnosis ModeBKS0027X
DIAGNOSIS PROCEDURE
1. Select “DCU Failure Diagnosis”.

Self-diagnosis screen is displayed, and then self-diagnosis
starts.

The bar graph visible below self-diagnosis screen displays
progress of the diagnosis.
2. When exiting self-diagnosis, a confirmation screen for unit con-
nection may be displayed.

When judging an optional device as an abnormal connection,
a confirmation screen is displayed to check if the applicable
device is actually equipped. When it is equipped, a screen for
diagnosis results is displayed by selecting the device name
and by selecting “Finish”. (Unequipped units can also be dis-
played by option.)

When optional device is connected normally, the switch of the
device name is not displayed.
3. On the diagnosis results screen, each unit name and connection
line will be colored according to the diagnosis result, as follows.
NOTE:

DCU = Display control unit

SW = A/C and AV switch

If multiple malfunctions occur at the same time for a single
unit, the screen switch colors are determined according to the following order of priority: red > yellow >
gray.

Screen when it is normal
–Between DCU and SW is connected in a gray.
–Between DCU and DISPLAY, DCU and AUDIO, AUDIO and CD-CHG are connected in green.
4. Select a switch on the diagnosis results screen, and comments
for the diagnosis results will be shown.
SKIB0830E
SKIB0831E
Green : No malfunctioning.
Red : Unit is malfunctioning.
Gray : Diagnosis has not been done.
Yellow : Cannot be judged by self-diagnosis results.
SKIB8826E
SKIB0833E

AV-88
INTEGRATED COLOR DISPLAY SYSTEM

SELF-DIAGNOSIS RESULT
Check the applicable display in the following table, and then repair the malfunctioning parts.
Quick Reference Table
Self-diagnosis result screen Possible cause Action to take
Display control unit malfunction is
detected.Replace display control unit.
Malfunction is detected on communi-
cation signal between display control
unit and display.1. Check communication circuit between
display control unit and display.
2. Check communication signal between
display control unit and display.
3. If the results from the above checkup
show no malfunction, replace either
display control unit or display, and then
start self-diagnosis.
4. If self-diagnosis results still show any
malfunction, replace the other unit.

Audio unit power supply circuit mal-
function is detected.

Malfunction is detected on commu-
nication signal between display con-
trol unit and audio unit.1. Check audio unit power supply circuit.
2. Check communication circuit between
display control unit and audio unit.
3. Check communication signal between
display control unit and audio unit.
4. If the results from the above checkup
show no malfunction, replace either
display control unit or audio unit, and
then start self-diagnosis.
5. If self-diagnosis results still show any
malfunction, replace the other unit.

CD auto changer power supply cir-
cuit malfunction is detected.

Malfunction is detected on commu-
nication signal between audio unit
and CD auto changer.1. Check CD auto changer power supply
circuit.
2. Check communication circuit between
audio unit and CD auto changer.
3. Check communication signal between
audio unit and CD auto changer.
4. If the results from the above checkup
show no malfunction, replace either
audio unit or CD auto changer, and
then start self-diagnosis.
5. If self-diagnosis results still show any
malfunction, replace the other unit.
SKIB8827E
SKIB8828E
SKIB8829E
SKIB8830E

INTEGRATED COLOR DISPLAY SYSTEM
AV-89
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Confirmation ModeBKS0027Y
DIAGNOSIS PROCEDURE
1. Select “DCU Confirmation”.

Each diagnosis is shown by selecting each screen switch on
DCU Confirmation screen.
DCU
Display Diagnosis
Color tone and shading of the display control unit-generated image can be checked by the display of a color
bar and a gray scale.

If RGB signal is malfunctioning, the tint of the color bar display is as follows.
SKIB0834E
R (red) signal error : Light blue (Cyan) tint
G (green) signal error : Purple (Magenta) tint
B (blue) signal error : Yellow tint
SKIB8899E

AV-90
INTEGRATED COLOR DISPLAY SYSTEM

Vehicle Signal
A comparison check can be made of each actual vehicle signal and
the signals recognized by the display control unit.
History of Error
Diagnosis results of self-diagnosis depend on if any error occurred
during the time after selecting “DCU Failure Diagnosis” until self-
diagnosis results is displayed.
Meanwhile, when an error occurs before selecting “DCU Failure
Diagnosis”, and if an error does not occur until self-diagnosis results
is displayed, a diagnosis result is judged as normal.
Consequently, a diagnosis needs to be performed with “History of
Error” for the past error that is not available with self-diagnosis.
“History of Error” stores error occurrences up to 50, and errors after
the 51st are displayed as the 50th.
SKIB0835E
Diagnosis item Display Condition Remarks
Speed SignalON When vehicle speed is more than 0 km/h (0 MPH)
Changes in indication may be delayed.
This is normal. OFF When vehicle speed is 0 km/h (0 MPH)
— Ignition switch in ACC position
LightON Lighting switch ON
—
OFF Lighting switch OFF
IGNON Ignition switch ON
—
OFF Ignition switch ACC position
ReverseON Selector lever in R position
Changes in indication may be delayed.
This is normal. OFF Selector lever in any position other than R position
— Ignition switch in ACC position
SKIB8900E

INTEGRATED COLOR DISPLAY SYSTEM
AV-91
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Diagnosis by History of Error
When having a difficulty on the investigation of cause due to multiple errors with a reproducible malfunction,
turn ON the ignition switch from OFF mode after making a memo of the item and number of time (or delete
“History of Error”). Check “History of Error” again after the malfunction was reproduced, and then perform
diagnosis focusing on the item of which number of time increased.
Error item Possible cause Action to take
DCU malfunctionDisplay control unit malfunction is
detected.Replace display control unit.
Display Connect Error

Display power supply and ground
circuit malfunction is detected.

Malfunction is detected on commu-
nication signal between display con-
trol unit and display.1. Delete the “History of Error”, and turn
OFF ignition switch.
2. Turn ON ignition switch, and make sure
of the “History of Error”.
3. If the error item listed left is displayed
again, GO TO 4. If the error item is not
displayed, end the diagnosis. (This is
not a malfunction.)
4. Check display power supply and
ground circuit.
5. Check communication circuit between
display control unit and display.
6. Check communication signal between
display control unit and display.
7. If the results from the above checkup
show no malfunction, replace either
display control unit or display, and then
start self-diagnosis.
8. If self-diagnosis results still show any
malfunction, replace the other unit.

AV-92
INTEGRATED COLOR DISPLAY SYSTEM

Software Version
Software version of each unit is displayed.
HVAC
Self-diagnosis of air conditioner system is performed. Refer to AT C - 4 6 , "Self-diagnosis Function" .
Audio Connect Error

Audio unit power supply circuit mal-
function is detected.

Malfunction is detected on commu-
nication signal between display con-
trol unit and audio unit.1. Start self-diagnosis, and make sure of
the result.
2. If any error is found, GO TO 3. If any
error is not found, delete the “History of
Error” and end the diagnosis. (This is
not a malfunction.)
3. Check audio unit power supply circuit.
4. Check communication circuit between
display control unit and audio unit.
5. Check communication signal between
display control unit and audio unit.
6. If the results from the above checkup
show no malfunction, replace either
display control unit or audio unit, and
then start self-diagnosis.
7. If self-diagnosis results still show any
malfunction, replace the other unit.
SW Error

A/C and AV switch power supply
and ground circuit malfunction is
detected.

Malfunction is detected on commu-
nication signal between display con-
trol unit and A/C and AV switch.1. Delete the “History of Error”, and turn
OFF ignition switch.
2. Turn ON ignition switch, and make sure
of the “History of Error”.
3. If the error item listed left is displayed
again, GO TO 4. If the error item is not
displayed, end the diagnosis. (This is
not a malfunction.)
4. Check A/C and AV switch power supply
and ground circuit.
5. Check communication circuit between
display control unit and A/C and AV
switch.
6. If the results from the above checkup
show no malfunction, replace either
display control unit or A/C and AV
switch, and then start self-diagnosis.
7. If self-diagnosis results still show any
malfunction, replace the other unit. Error item Possible cause Action to take