ignition NISSAN TEANA 2003 Service Manual

INTEGRATED COLOR DISPLAY SYSTEM
AV-81
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18 (G) Ground RGB signal (B: blue) Input ONStart DCU Confirmation
mode, and then display
color bar by selecting “Dis-
play Color Spectrum Bar”
on Display Diagnosis
screen
19 (R) GroundRGB synchronizing
signalInput ONWhen displaying RGB
image
20 (W) GroundVe r ti c a l
synchronizing (VP)
signalOutput ON —
21 — Shield — — — —
22 (Y) GroundCommunication signal
(DSP-DCU)Output ON —
23 — Shield — — — —Terminal
(Wire color)
ItemSignal
input/
outputCondition
Reference value
+–Ignition
switchOperation
SKIB7771E
SKIB3603E
SKIB3598E
SKIB3606E

AV-82
INTEGRATED COLOR DISPLAY SYSTEM

Terminals and Reference Value for A/C and AV SwitchBKS0027T
Te r m i n a l
(Wire color)
ItemSignal
input/
outputCondition
Reference value
+–Ignition
switchOperation
1 (G/B) 3 (B/W)Remote control signal
AInput ONPress and hold MODE
switchApprox. 0 V
Press and hold SEEK
DOWN switchApprox. 1.7 V
Press and hold VOL DOWN
switchApprox. 3.3 V
Except for above Approx. 5 V
2 (R) 3 (B/W)Remote control signal
BInput ONPress and hold POWER
switchApprox. 0 V
Press and hold SEEK UP
switchApprox. 1.7 V
Press and hold VOL UP
switchApprox. 3.3 V
Except for above Approx. 5 V
3 (B/W) GroundRemote control
ground— ON — Approx. 0 V
7 (V) Ground ACC power supply Input ACC — Battery voltage
11 (Y) GroundCommunication
signal (–)Input/
OutputON —
12 (BR) GroundCommunication
signal (+)Input/
OutputON —
13 (B) Ground Ground — ON — Approx. 0 V
14 — Shield — — — —
SKIB7379E
SKIB7378E

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

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

INTEGRATED COLOR DISPLAY SYSTEM
AV-97
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Unable to Operate System with A/C and AV SwitchBKS00284
Symptom: Unable to operate A/C system and audio system with A/C and AV switch. (Unable to start self-diag-
nosis.)
1. CHECK CONDITION
1. Turn ignition switch ON.
2. Check if an image is displayed on the screen.
Is an image displayed on the screen?
YES >> GO TO 2.
NO >> Repair malfunctioning part. Refer to AV- 9 9 , "
All Images Are Not Displayed" .
2. SELF-DIAGNOSIS OF A/C AND AV SWITCH
Start self-diagnosis of A/C and AV switch, and check the self-diagnosis result. Refer to AV- 8 4 , "
A/C and AV
Switch Self-Diagnosis Function" .
OK or NG
OK >> GO TO 4.
NG >> GO TO 3.
3. CHECK A/C AND AV SWITCH POWER SUPPLY AND GROUND CIRCUIT
1. Check voltage between A/C and AV switch harness connector
terminal and ground.
2. Turn ignition switch OFF.
3. Disconnect A/C and AV switch connector.
4. Check continuity between A/C and AV switch harness connector
M40 terminal 13 and ground.
OK or NG
OK >> Replace A/C and AV switch.
NG >> Repair harness or connector.
Terminals
OFF ACC ON (+)
(–)
Connector Terminal
M40 7 Ground 0 VBattery
voltageBattery
voltage
13 – Ground : Continuity should exist.
SKIB8804E
SKIB8805E

AV-98
INTEGRATED COLOR DISPLAY SYSTEM

4. CHECK HARNESS
1. Turn ignition switch OFF.
2. Disconnect display control unit and A/C and AV switch connectors.
3. Check continuity between display control unit harness connector
(A) M83 terminals 28, 30 and A/C and AV switch harness con-
nector (B) M40 terminals 12, 11.
4. Check continuity between display control unit harness connector
(A) M83 terminals 28, 30 and ground.
OK or NG
OK >> GO TO 5.
NG >> Repair harness or connector.
5. CHECK A/C AND AV SWITCH AND DISPLAY CONTROL UNIT
1. Replace A/C and AV switch or display control unit.
2. Make sure that A/C system and audio system can be operated by A/C and AV switch.
OK or NG
OK >> INSPECTION END
NG >> Replace the other unit.28 – 12 : Continuity should exist.
30 – 11 : Continuity should exist.
28, 30 – Ground : Continuity should not exist.
SKIB8837E

INTEGRATED COLOR DISPLAY SYSTEM
AV-99
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All Images Are Not DisplayedBKS00285
Symptom: RGB image and rear view image are not displayed.
1. CHECK CONDITION
When operating audio and air conditioner, make sure that they operate correctly.
Do audio and air conditioner operate normally?
YES >> GO TO 2.
NO >> GO TO 5.
2. CHECK DISPLAY GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect display connector.
3. Check continuity between display harness connector M81 termi-
nal 1 and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair harness or connector.
3. CHECK HARNESS
1. Disconnect display control unit connector.
2. Check continuity between display control unit harness connector
(A) M82 terminals 2, 4, 5, 7 and display harness connector (B)
M81 terminals 2, 3, 13, 14.
3. Check continuity between display control unit harness connector
(A) M82 terminals 2, 4 and ground.
OK or NG
OK >> GO TO 4.
NG >> Repair harness or connector.1 – Ground : Continuity should exist.
SKIB7839E
2 – 2 : Continuity should exist.
4 – 3 : Continuity should exist.
5 – 13 : Continuity should exist.
7 – 14 : Continuity should exist.
2, 4 – Ground : Continuity should not exist.
SKIB7840E