Ignition switch INFINITI FX35 2005 Service Manual

AV-46
AUDIO
Revision: 2005 July 2005 FX
3. CHECK VEHICLE SPEED SIGNAL
1. Connect unified meter and A/C amp. connector.
2. Start engine and drive vehicle at more than 40 km/h (25MPH).
3. Check the signal between audio unit harness connector M60 terminal 22 (W/L) and ground with CON- SULT-ll or oscilloscope.
OK or NG
OK >> INSPECTION END (System is OK.)
NG >> Replace unified meter and A/C amp.
Locking CD Auto-Changer MechanismAKS007GD
CAUTION:

Prior to removing a malfunctioning CD auto-changer unit that will be shipped for repair, the
changer mechanism MUST BE LOCKED to prevent the mechanism from being damaged during
shipping.

If a CD is jammed or unable to be removed from the unit, do NOT lock the changer mechanism. If
the unit is to be shipped for repair, carefully package the unit to prevent vibration and shock.
DAMPER LOCK PROCEDURE
1. Eject and remove any CDs from the audio unit.
2. Turn ignition switch OFF. Wait until audio unit display is off and mechanism stops moving (mechanism sound stops).
3. Press any one of the disc selection buttons once. When a display shows on the audio unit, press the same disc selection button again within 5 seconds.

The changer mechanism will lock itself within 10 seconds.
4. After mechanism stops moving (mechanism sound stops), open the driver and passenger window, and then disconnect negative battery cable.
NOTE:
After installing a new or remanufactured audio unit, switching the audio unit ON will automatically unlock the
mechanism. A special unlocking procedure is not required.
Terminal Condition Reference
signal
(+) (–)
22
(W/L) Ground When vehicle
speed is approx.40
km/h (25MPH)
SKIA6809EELF1080D

AUDIO ANTENNA AV-51
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AUDIO ANTENNAPFP:28200
System DescriptionAKS007WE
With the ignition switch in ACC or ON, power is supplied

through 10A fuse [No. 6, located in the fuse block (J/B)]

to audio unit terminal 10.
Ground is supplied through the case of the antenna amp.
When the radio switch is turned ON, antenna signal is supplied

through audio unit terminal 5

to the antenna amp.
Then the antenna amp. is activated.
The amplified radio signals are supplied to the audio unit through the antenna amp.

AUDIO ANTENNA AV-53
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Terminals and Reference Value for Audio UnitAKS007WW
Antenna Amp. InspectionAKS007WX
1. CHECK ANTENNA FEEDER
Check with visual observation if antenna feeder between audio unit and antenna amp. has disconnection or
malfunction on the mounting part (engagement, looseness of shield earth, etc.).
OK or NG
OK >> GO TO 2
NG >> Replace antenna feeder.
2. CHECK ANTENNA SIGNAL
1. Turn the ignition switch ACC.
2. Check voltage between audio unit harness connector M58 ter- minal 5 (R/W) and ground.
OK or NG
OK >> INSPECTION END (System is OK.)
NG >> Replace audio unit.
Terminal
(Wire color) Item Signal
input/
output Condition
Reference value Example of
symptom
+– Ignition
switch Operation
5 (R/W) Ground Antenna signal Input ACC — Approx. 12 V Receiving status of radio
broadcast becomes bad.
10 (LG/R) Ground ACC power
supply Input ACC — Battery voltage
System does not work
properly.
5 (R/W) – Ground : Approx. 12 V
SKIA6854E

INTEGRATED DISPLAY SYSTEM AV-57
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INTEGRATED DISPLAY SYSTEMPFP:28090
System DescriptionAKS005U0
A/C AND AV SWITCH SYSTEM
Refer to Owner′s Manual for A/C and AV switch operating instructions.
Using the A/C and AV switch at the center of the instrument panel, the controls of the following systems are
centralized:

Integrated display system (Drive computer, setting screen, etc.)

Auto A/C system

Audio system
PRECAUTION OF LCD MONITOR

In order to use LED for backlight of a display, by interior temperature, brightness may change. In low tem-
perature, the refreshing rate of the picture also becomes low because of the low response of the LCD
monitor. When the interior becomes warm, however, the LCD recovers the normal display.

Backlight sometimes flickers or darkens according to the wearing out of LCD and the number of times
switched ON and OFF. In this case, display unit should be replaced. (Exchange only of backlight is impos-
sible.)
POWER SUPPLY AND GROUND
Power is supplied at all times

through 15A fuse (No. 32, located in fuse and fusible link box)

to audio unit terminal 6

to display unit terminal 1 and

to A/C and AV switch terminal 1.
When ignition switch is in ACC or ON position, power is supplied

through 10A fuse [No. 6, located in fuse block (J/B)]

to unified meter and A/C amp. terminal 35

to audio unit terminal 10

to display unit terminal 2 and

to A/C and AV switch terminal 2.
When ignition switch is in ON or START position, power is supplied

through 10A fuse [No. 12, located in fuse block (J/B)]

to unified meter and A/C amp. terminal 22 and

to display unit terminal 3.
Ground is supplied

to unified meter and A/C amp. terminals 29, 30

to display unit terminals 6 and 15 and

to A/C and AV switch terminal 5

through body grounds M35, M45 and M85.
Ground is supplied through the case of the audio unit.

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-77
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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