INFINITI FX35 2004 Service Manual

AV-70
INTEGRATED DISPLAY SYSTEM
Revision: 2004 November 2004 FX35/FX45
TKWM0593E

INTEGRATED DISPLAY SYSTEM
AV-71
C
D
E
F
G
H
I
J
L
MA
B
AV
Revision: 2004 November 2004 FX35/FX45
TKWM0594E

AV-72
INTEGRATED DISPLAY SYSTEM
Revision: 2004 November 2004 FX35/FX45
Terminals and Reference Value for Display UnitAKS00BOD
Terminal No.
(Wire color)
ItemSignal
input/
outputCondition
VoltageExample of
symptom
+–Ignition
switchOperation
1 (W/L) GroundBattery power
supplyInput OFF - Battery voltageSystem does not
work properly.
2 (LG/R) GroundACC power
supplyInput ACC - Battery voltageSystem does not
work properly.
3 (G/R) Ground Ignition signal Input ON - Battery voltageA/C operation is
not possible.
Vehicle informa-
tion setting is not
possible.
4 (R/L) GroundIllumination
signalInput OFFLighting switch is
ON .Approx. 12VScreen does not
switch to night-
time mode after
the lighting switch
is turned ON. Llighting switch is
OFF.Approx. 0V
6 (B) Ground Ground - ON - Approx. 0V -
7 (R/G) GroundVehicle speed
signal (8-pulse)Input ONWhen vehicle
speed is approx.
40 km/h (25 MPH)Drive computer
item is not dis-
played correctly.
8 (LG) Ground Audio TX Output ONOperate audio
volume.Audio does not
operate properly.
9 - Shield ground - - - - -
10 (B/Y) Ground Audio RX Input ONOperate audio
volume.Audio does not
operate properly.
11 (B/R) GroundCommunica-
tion signal (+)Input/
outputON -System does not
work properly.
12 - Shield ground - - - - -
PKIA1935E
SKIA4402E
SKIA4403E
SKIA0175E

INTEGRATED DISPLAY SYSTEM
AV-73
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AV
Revision: 2004 November 2004 FX35/FX45
Terminals and Reference Value for A/C and AV SwitchAKS00BOE
13 (W/R) GroundCommunica-
tion signal (-)Input/
outputON -System does not
work properly.
14 (L) - CAN-H - - - - -
15 (B) - Shield ground - - - - -
16 (R) - CAN-L - - - - -Terminal No.
(Wire color)
ItemSignal
input/
outputCondition
Voltag eExample of
symptom
+–Ignition
switchOperation
SKIA0176E
Terminal No.
(Wire color)
ItemSignal
input/
outputCondition
Vo l ta g eExample of
symptom
+–Ignition
switchOperation
1 (W/L) GroundBattery power
suoplyInput OFF - Battery voltageSystem does not
work properly.
2 (LG/R) GroundACC power
supply Input ACC - Battery voltageSystem does not
work properly.
5 (B) Ground Ground - ON - Approx. 0V -
6 (B/R) GroundCommunica-
tion signal (+)Input/
outputON -System does not
work properly.
7 - Shield ground - - - - -
8 (W/R) GroundCommunica-
tion signal (-)Input/
outputON -System does not
work properly.
12 (R/G) GroundRemote con-
troller AInput ONPress MODE
switch. Approx. 0V
Audio steering
wheel switches
do not function. Press SEEK UP
switch.Approx. 1.7V
Press VOL UP
switch.Approx. 3.3V
Except for above Approx. 5V
SKIA0175E
SKIA0176E

AV-74
INTEGRATED DISPLAY SYSTEM
Revision: 2004 November 2004 FX35/FX45
On Board Self-Diagnosis FunctionAKS00BOF
DESCRIPTION

Diagnosis function consists of the self-diagnosis mode performed automatically.

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 LCD screen.
DIAGNOSIS ITEM
Self-Diagnosis ModeAKS00BOG
OPERATION PROCEDURES
1. Start the engine.
2. Turn the audio system off.
3. While pressing the “MUTE/II ” switch, 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. Display unit connection check screen.
13 (G/W) GroundRemote con-
troller BInput ONPress POWER
switch.Approx. 0V
Audio steering
wheel switches
do not function. Press SEEK
DOWN switch.Approx. 1.7V
Press VOL DOWN
switch.Approx. 3.3V
Except for above Approx. 5V
14 (B/Y) -Remote con-
troller ground-- - -Audio steering
wheel switches
do not function. Terminal No.
(Wire color)
ItemSignal
input/
outputCondition
VoltageExample of
symptom
+–Ignition
switchOperation
Mode Item Description Reference page
Self-diagnosisNETWORK CHECKCheck network between control unit and switch connected
from display unit via communication line.AV-75, "
NETWORK CHECK"
PARTS CHECK
Perform diagnosis and setting of display unit.

Perform self-diagnosis for auto air conditioner system.AV- 7 6 , "PARTS CHECK"
VERSION CHECK Displays version of each unit.AV- 7 6 , "VERSION CHECK"
CAN DIAG MNTR Display unit displays CAN communication status.AV- 7 6 , "CAN DIAG MNTR
(CAN DIAG MONITOR)"
SKIA4971E

INTEGRATED DISPLAY SYSTEM
AV-75
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AV
Revision: 2004 November 2004 FX35/FX45
5. Select each connecting unit (CHANGER, SATELLITE RADIO).
6. Self-diagnosis screen is displayed.

Using the joystick, select each item, and perform diagnosis.
CAUTION:
If self-diagnosis cannot activated, refer to AV- 7 8 , "
Trouble
Diagnosis Chart by Symptom" .
NETWORK CHECK
Selecting NETWORK CHECK on self-diagnosis screen, display self-
diagnostic results.
SKIA5921E
SKIA5922E
SKIA5923E
Diagnosis item Contents DTC return condition Reference at error
HVAC OK/NGCommunication error between unified meter and A/C amp. and dis-
play unit.AV-85, "
CAN Communica-
tion Line Inspection"
SWITCH OK/NG Communication error between A/C and AV switch and display unit.AV-84, "A/C and AV Switch
Does Not Operate"
AUDIO OK/NG Communication error between audio and display unit.AV-82, "Audio Communica-
tion Line Inspection"

AV-76
INTEGRATED DISPLAY SYSTEM
Revision: 2004 November 2004 FX35/FX45
PARTS CHECK

Selecting PARTS CHECK on self-diagnosis screen, display
selection screen.

Select DISPLAY, indicate DISPLAY DETAIL screen. Display
diagnosis and setting can be performed.

Select HVAC, Indicate HVAC DETAIL screen. Auto air condi-
tioner system self-diagnosis can be performed.
DISPLAY DETAIL SCREEN
NOTE:
Except an audio screen.
HVAC DETAIL SCREEN
Press the joystick, start auto air conditioner system self-diagnosis.
Refer to AT C - 5 3 , "
Self-diagnosis Function" .
VERSION CHECK
Check ID and version of display, A/C and AV switch, audio, IVCS, changer and Satellite Radio.
CAN DIAG MNTR (CAN DIAG MONITOR)
Display CAN communication status.
SKIA5924E
Items Description
FULL BLINK All display unit segments turn ON.
BLANK–ADJAdjust the display time-out for 5 to 15 seconds. (Default is
10 seconds.)
Note
WARNING Select warning indication ON/OFF. (Default is ON.)
SKIA5925E
SKIA5926E
Items shown Contents
CANCOMM OK/NG
CAN1 OK/UNKWN
CAN2 OK/UNKWN
CAN3 OK/UNKWN
CAN4 OK/UNKWN
CAN5 OK/UNKWN
CAN6 OK/UNKWN
CAN7 OK/UNKWN
CAN8 OK/UNKWN
CAN9 OK/UNKWN
SKIA5927E

INTEGRATED DISPLAY SYSTEM
AV-77
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AV
Revision: 2004 November 2004 FX35/FX45
A/C and AV Switch Self-Diagnosis FunctionAKS00BOH
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 switches “MUTE/II ” and
“PREV ” simultaneously for 3 seconds.
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 the A/C and AV switch is pressed.

Continuity of harness between A/C and AV switch and steering switch (audio).
EXITING THE SELF-DIAGNOSIS MODE

Turn ignition switch OFF. Then the self-diagnosis ends.
SKIA4972E

AV-78
INTEGRATED DISPLAY SYSTEM
Revision: 2004 November 2004 FX35/FX45
Trouble Diagnosis Chart by SymptomAKS00BOI
Symptom Check item
No screen is shown.

Display unit power supply and ground circuit. Refer to AV- 7 9 , "Power Supply
and Ground Circuit Check for Display Unit" .

Display unit
Screen does not switch to nighttime mode after the
lighting switch is turned ON.

Illumination signal. Refer to AV-81, "Illumination Signal Inspection" .

Display unit
TRIP and FUEL ECON screen do not appear.

Ignition signal. Refer to AV- 8 2 , "Ignition Signal Inspection" .

Display unit

Trip odometer (DIST) is not added up.

Average vehicle speed (AVG) is not displayed.

Vehicle speed signal. Refer to AV- 8 0 , "Vehicle Speed Signal Inspection" .

Display unit
Average fuel consumption (AVG) is not displayed.

Vehicle speed signal. Refer to AV- 8 0 , "Vehicle Speed Signal Inspection" .

CAN communication line. Refer to AV- 8 5 , "CAN Communication Line Inspec-
tion" .

Display unit
Distance to empty (DTE) is not displayed.

Check if speedometer operates. If it does not operate, go to DI-17, "Vehicle
Speed Signal Inspection" .

Check if fuel gauge operates. If it does not operate, go to DI-20, "Fuel Level
Sensor Signal Inspection 1" .

CAN communication line. Refer to DI-22, "Communication Line Inspection" .

Display unit
Tire pressure is not displayed.

Ignition signal. Refer to AV- 8 2 , "Ignition Signal Inspection" .

Low tire pressure warning control unit. Refer to WT-17, "Self-Diagnosis" .

CAN communication line. Refer to DI-22, "Communication Line Inspection" .

Display unit
Door warning screen does not appear.

Ignition signal. Refer to AV- 8 2 , "Ignition Signal Inspection" .

Vehicle speed signal. Refer to AV- 8 0 , "Vehicle Speed Signal Inspection" .

CAN communication line. Refer to AV- 8 5 , "CAN Communication Line Inspec-
tion" .

Display unit
A/C and AV switch and all switch operation are not
possible.
(Do not start self-diagnosis.)Refer to AV-84, "
A/C and AV Switch Does Not Operate" .
Air conditioner operation is not possible.

A/C and AV switch. Refer to AV-41, "A/C and AV Switch Inspection" .

CAN communication line. Refer to AV- 8 5 , "CAN Communication Line Inspec-
tion" .

INTEGRATED DISPLAY SYSTEM
AV-79
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AV
Revision: 2004 November 2004 FX35/FX45
Power Supply and Ground Circuit Check for Display UnitAKS00BOJ
1. CHECK FUSE
Make sure that the following fuses in display 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 display unit harness connector terminals
and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair harness or connector.
3. CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect display unit connector.
3. Check continuity between display unit harness connector M62
terminals 6 (B), 15 (B) and ground.
OK or NG
OK >> INSPECTION END
NG >> Repair harness or connector.
Unit Signal Fuse No.
Display unitBattery power supply 32
Ignition switch ACC or ON 6
Terminals Ignition switch position
(+)
(–) OFF ACC ON
ConnectorTerminal
(Wire color)
M621 (W/L) GroundBattery
voltageBattery
voltageBattery
voltage
2 (LG/R) Ground 0VBattery
voltageBattery
voltage
SKIB0373E
6, 15 – ground : Continuity should exist.
SKIA4986E