INFINITI FX35 2005 Service Manual

AV-72
INTEGRATED DISPLAY SYSTEM
Revision: 2005 July 2005 FX
Terminals and Reference Value for Display UnitAKS005U6
Terminal No.
(Wire color) Item Signal
input/
output Condition
Voltage Example of
symptom
+– Ignition
switch Operation
1 (W/L) Ground Battery power
supply Input OFF — Battery voltage System does not
work properly.
2 (LG/R) Ground ACC power
supply Input ACC — Battery voltage System does not
work properly.
3 (G/R) Ground Ignition signal Input ON — Battery voltage A/C operation is
not possible.
Vehicle informa-
tion setting is not possible.
4 (R/L) Ground Illumination
signal Input OFF Lighting switch is
ON (1st position). Approx. 12 V Audio unit illumi-
nation does not
come on when
lighting switch is
ON (1st position).
Turn lighting
switch OFF. Approx. 0 V
6 (B) Ground Ground — ON — Approx. 0 V —
7 (R/G) Ground Vehicle speed
signal (8-pulse) Input ON When vehicle
speed is approx.
40 km/h (25 MPH) Drive computer
item is not dis-
played correctly.
8 (LG) Ground Audio TX
(DSP-AUD) Output ON
Operate audio
volume. Audio does not
operate properly.
9 — Shield ground — — — — —
10 (B/Y) Ground Audio RX
(AUD-DSP) Input ON
Operate audio
volume. Audio does not
operate properly.
11 (B/R) Ground Communica-
tion signal (+) Input/
output ON — System does not
work properly.
12 — Shield ground — — — — —
PKIA1935E
SKIA4402E
SKIA4403E
SKIA0175E

INTEGRATED DISPLAY SYSTEM AV-73
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Revision: 2005 July 2005 FX
Terminals and Reference Value for A/C and AV SwitchAKS005U7
13 (W/R) Ground Communica-
tion signal (-) Input/
output ON — System does not
work properly.
14 (L) — CAN-H — — — — —
15 (B) — Shield ground — — — — —
16 (R) — CAN-L — — — — — Terminal No.
(Wire color) Item Signal
input/
output Condition
Voltag e Example of
symptom
+– Ignition
switch Operation
SKIA0176E
Terminal No.
(Wire color) Item Signal
input/
output Condition
Vo l ta g e Example of
symptom
+– Ignition
switch Operation
1 (W/L) Ground Battery power
supply Input OFF — Battery voltage System does not
work properly.
2 (LG/R) Ground ACC power
supply Input ACC — Battery voltage System does not
work properly.
5 (B) Ground Ground — ON — Approx. 0 V —
6 (B/R) Ground Communica-
tion signal (+) Input/
output ON —
System does not
work properly.
7 — Shield ground — — — — —
8 (W/R) Ground Communica-
tion signal (-) Input/
output ON —
System does not
work properly.
12 (R/G) Ground Steering SW
A Input ON Press MODE
switch. Approx. 0 V
Audio steering
wheel switches
do not function.
Press SEEK UP
switch. Approx. 1.7 V
Press VOL UP
switch. Approx. 3.3 V
Except for above Approx. 5 V
SKIA0175E
SKIA0176E

AV-74
INTEGRATED DISPLAY SYSTEM
Revision: 2005 July 2005 FX
On Board Self-Diagnosis FunctionAKS005U8
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 ModeAKS005U9
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.
5. Select each connecting unit (CHANGER, SATELLITE RADIO).
13 (G/W) Ground Steering SW
B Input ON Press POWER
switch. Approx. 0 V
Audio steering
wheel switches
do not function.
Press SEEK
DOWN switch. Approx. 1.7 V
Press VOL DOWN
switch. Approx. 3.3 V
Except for above Approx. 5 V
14 (B/Y) — Steering SW
ground —— — — Audio steering
wheel switches
do not function.
Terminal No.
(Wire color) Item Signal
input/
output Condition
Voltage Example of
symptom
+– Ignition
switch Operation
Mode Item Description Reference page
Self-diagnosis NETWORK CHECK
Check 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 5 , "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)"
PKIB4131E
SKIA5921E

INTEGRATED DISPLAY SYSTEM AV-75
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Revision: 2005 July 2005 FX
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.
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.
SKIA5922E
SKIA5923E
Diagnosis
item Contents DTC return condition Reference at error
HVAC OK/NG Communication error between unified meter and A/C amp. and display unit. AV- 8 5 , "
CAN Communication
Line Inspection"
SWITCH OK/NG Communication error between A/C and AV switch and display unit. AV- 8 4 , "AV Communication
Line Inspection"
AUDIO OK/NG Communication error between audio and display unit.AV- 8 2 , "Audio Communication
Line Inspection"
SKIA5924E

AV-76
INTEGRATED DISPLAY SYSTEM
Revision: 2005 July 2005 FX
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.
Items Description
FULL BLINK All display unit segments turn ON.
BLANK–ADJ Adjust 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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Revision: 2005 July 2005 FX
A/C and AV Switch Self-Diagnosis FunctionAKS005UA
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.
Then the self-diagnosis operates.
EXITING THE SELF-DIAGNOSIS MODE
Turn ignition switch OFF. Then the self-diagnosis ends.
DIAGNOSIS FUNCTION

It can illuminate all the indicators (LED) in the A/C and AV switch.

It can check for continuity of the switches by sounding the buzzer when the A/C and AV switch is pressed.

It can check for continuity of harness between A/C and AV switch and steering switch (audio).
SKIA4972E

AV-78
INTEGRATED DISPLAY SYSTEM
Revision: 2005 July 2005 FX
Trouble Diagnosis Chart by SymptomAKS005UB
Symptom Suspect Systems and reference
No screen is shown. Refer to
AV-79, "
Power Supply and Ground Circuit Check for Display Unit" .
If above is normal, replace display unit.
Screen does not switch to nighttime mode after the
lighting switch is turned 1st. Refer to
AV-81, "
Illumination Signal Inspection" .
TRIP and FUEL ECON screen do not appear. Refer to AV-82, "
Ignition Signal Inspection" .
Journey distance (DIST) is not added up. Refer to AV-80, "
Vehicle Speed Signal Inspection" .
Average vehicle speed (AVG) is not displayed.
Average fuel consumption (AVG) is not displayed.

Refer to AV-80, "Vehicle Speed Signal Inspection" .

Refer to AV-85, "CAN Communication Line Inspection" .
If above is normal, replace display unit.
Distance to empty (DTE) is not displayed.

Check if speedometer operates. If it does not operate, go to AV- 8 0 , "Vehicle
Speed Signal Inspection" .

Check if fuel gauge operates. If it does not operate, go to DI-22, "Fuel Level
Sensor Signal Inspection" .

Refer to AV-85, "CAN Communication Line Inspection" .
If above is normal, replace display unit.
Tire pressure is not displayed.

Check BCM (Body Control Module). Refer to BCS-3, "BCM (BODY CONTROL
MODULE)" .

Refer to AV-85, "CAN Communication Line Inspection" .
If above is normal, replace display unit.
Door warning screen does not appear.

Refer to AV-80, "Vehicle Speed Signal Inspection" .

Refer to AV-85, "CAN Communication Line Inspection" .
If above is normal, replace display unit.
A/C and AV switch and all switch operation are not
possible.
(Do not start self-diagnosis.)

Refer to AV-80, "Power Supply and Ground Circuit Check for A/C and AV
Switch" .

Refer to AV-77, "A/C and AV Switch Self-Diagnosis Function" .

Refer to AV-84, "AV Communication Line Inspection" .
If above is normal, replace display unit.
Audio operation is not possible.

Refer to AV-77, "A/C and AV Switch Self-Diagnosis Function" .

Refer to AV-82, "Audio Communication Line Inspection" .
Audio steering wheel switches do not function. Refer to
AV-86, "
Audio Steering Wheel Switch Inspection" .
If above is normal, replace AV and A/C switch.
Air conditioner operation is not possible.

Refer to AV-77, "A/C and AV Switch Self-Diagnosis Function" .

Refer to AV-85, "CAN Communication Line Inspection" .

INTEGRATED DISPLAY SYSTEM AV-79
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Revision: 2005 July 2005 FX
Power Supply and Ground Circuit Check for Display UnitAKS005UC
1. CHECK FUSE
Check if the following fuses in display unit are 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 connector and ground.
OK or NG
OK >> GO TO 3.
NG >> Check harness for open or short between display unit and fuse.
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 >> Check ground harness.
Unit Power souse Fuse No.
Display Battery 32
Ignition switch ACC or ON 6
Ignition switch ON or START 12
Terminals Ignition switch position
(+) (–) OFF ACC ON
Connector Terminal
(Wire color)
M62 1 (W/L) Ground
Battery
voltage Battery
voltage Battery
voltage
2 (LG/R) Ground 0 V Battery
voltage Battery
voltage
SKIB0373E
Continuity should exist.
SKIA4986E

AV-80
INTEGRATED DISPLAY SYSTEM
Revision: 2005 July 2005 FX
Power Supply and Ground Circuit Check for A/C and AV SwitchAKS005UD
1. CHECK FUSE
Check if the following fuses in A/C and AV switch are 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 A/C and AV switch connector and ground.
OK or NG
OK >> GO TO 3.
NG >> Check harness for open or short between A/C and AV switch and fuse.
3. CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect A/C and AV switch connector.
3. Check continuity between A/C and AV switch harness connector M64 terminal 5 (B) and ground.
OK or NG
OK >> INSPECTION END
NG >> Check ground harness.
Vehicle Speed Signal InspectionAKS005UE
1. VEHICLE SPEED OPERATION CHECK
Does speedometer is operated normally?
YES or NO
YES >> GO TO 2.
NO >> Check combination meter trouble diagnosis. Refer to DI-15, "
Trouble Diagnosis" .
Unit Power source Fuse No.
A/C and AV switch Battery 32
Ignition switch ACC or ON 6
Terminals Ignition switch position
(+) (–) OFF ACC ON
Connector Terminal
(Wire color)
M64 1 (W/L) Ground
Battery
voltage Battery
voltage Battery
voltage
2 (LG/R) Ground 0 V Battery
voltage Battery
voltage
SKIA8937E
Continuity should exist.
SKIA4988E

INTEGRATED DISPLAY SYSTEM AV-81
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2. CHECK HARNESS
1. Turn ignition switch OFF.
2. Disconnect display unit connector and unified meter and A/C amp. connector.
3. Check continuity between display unit harness connector M62 terminal 7 (R/G) and unified meter and A/C amp. harness con-
nector M56 terminal 26 (R/G).
4. Check continuity between display unit harness connector M62 terminal 7 (R/G) and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair harness or connector.
3. CHECK VEHICLE SPEED SIGNAL
1. Connect unified meter and A/C amp. connector.
2. Drive vehicle at a constant speed.
3. Check the signal between display unit harness connector M62 terminal 7 (R/G) and ground with CONSULT-II or oscilloscope.
OK or NG
OK >> Replace display unit.
NG >> Check unified meter and A/C amp. system. Refer to DI-20, "
Vehicle Speed Signal Inspection" .
Illumination Signal InspectionAKS005UF
1. CHECK ILLUMINATION SIGNAL
1. Turn ignition switch ON.
2. Check voltage between display unit and ground.
OK or NG
OK >> Replace display unit.
NG >> Check harness for open or short between display unit
and IPDM E/R.
Continuity should exist.
Continuity should not exist.
SKIA4989E
7 (R/G) - Ground:
PKIB6611E
PKIA1935E
Terminals Lighting switch position
(+)
(–)
Connector Terminal
(Wire color) 1st or 2nd position OFF
M62 4 (R/L) Ground Approx.12 V Approx. 0 V
SKIA4992E