2005 INFINITI FX35 Ignition switch

AV-40
AUDIO
Revision: 2005 July 2005 FX
Noise InspectionAKS005TC
The vehicle itself can be a source of noise if noise prevention parts or electrical equipment is malfunction.
Check if noise is caused and/or changed by engine speed, ignition switch turned to each position, and opera-
tion of each piece of electrical equipment, and determine the cause.
NOTE:
The source of the noise can be found easily by listening to the noise while removing the fuses of electrical
components, one by one.
TYPE OF NOISE AND POSSIBLE CAUSE
Occurrence condition Possible cause
Occurs only when
engine is ON. A continuous growling noise occurs. The speed of the
noise varies with changes in the engine speed.

Ignition condenser
A whistling noise occurs while the engine speed is
high. A booming noise occurs while the engine is run-
ning and the lighting switch is ON.

Alternator
The occurrence of the noise is linked with the operation of the fuel pump.

Fuel pump condenser
Noise only occurs
when various elec-
trical components
are operating. A cracking or snapping sound occurs with the opera-
tion of various switches.

Relay malfunction, radio malfunction
The noise occurs when various motors are operating.

Motor case ground

Motor
The noise occurs constantly, not just under certain conditions.

Rear window defogger coil malfunction

Open circuit in printed heater

Poor ground of antenna amplifier or antenna feeder
line

Mirror type film is attached on the rear window glass

After-market TV antenna and/or electrical accessories
such as radio are attached on the rear window glass.
A cracking or snapping sound occurs while the vehicle is being driven,
especially when it is vibrating excessively.

Poor ground of audio parts

Poor ground due to incorrect installation of parts

Poor wiring connections or a short circuit

AUDIO AV-41
C
D E
F
G H
I
J
L
M A
B
AV
Revision: 2005 July 2005 FX
Power Supply Circuit InspectionAKS005TD
1. CHECK FUSE
Check that the following fuses of the BOSE speaker amp., woofer, and audio unit are not blown.
OK or NG
OK >> GO TO 2.
NG >> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse. Refer to PG-
3, "POWER SUPPLY ROUTING CIRCUIT" .
2. CHECK POWER SUPPLY CIRCUIT
1. Check voltage between the audio unit connector and ground.
2. Check voltage between BOSE speaker amp.connector or woofer connector and ground.
OK or NG
OK >>
INSPECTION END (Audio unit is OK.)

GO TO 3. (BOSE speaker amp. and woofer)
NG >> Repair harness or connector between each unit and fuse.
Unit Te r m i n a l
(Wire color) Signal name Fuse No.
Audio unit 6 (W/L) Battery power supply 32
10(LG/R) ACC power supply 6
BOSE speaker amp. 1(R) Battery power supply 17
Woofer 1(G/R) Battery power supply 32
Unit Terminal No.
Ignition switch Voltage
(+)
(–)
Connector Terminal
(Wire color)
Audio
unit M58 6 (W/L) Ground OFF Battery voltage
10 (LG/R) Ground ACC Battery voltage
PKIA3814E
Unit Terminal No.
Ignition switch Voltag e
(+)
(–)
Connector Terminal
(Wire color)
BOSE
speaker
amp. B212 1 (R) Ground OFF Battery voltage
Woofer B223 1 (G/R) Ground OFF Battery voltage
SKIA8931E

AUDIO AV-43
C
D E
F
G H
I
J
L
M A
B
AV
Revision: 2005 July 2005 FX
2. CHECK HARNESS
1. Turn ignition switch OFF.
2. Disconnect A/C and AV switch connector and spiral cable connector.
3. Check continuity between spiral cable harness connector terminals and A/C and AV switch harness con- nector terminals.
4. Check continuity between A/C and AV switch and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair harness or connector.
3. CHECK SPIRAL CABLE
1. Disconnect spiral cable connector (Audio steering wheel switch harness side).
2. Check continuity between spiral cable connector terminal 24, 31, 32 and terminal 20, 17, 16.
OK or NG
OK >> GO TO 4.
NG >> Replace spiral cable.
Te r m i n a l s
Continuity
A/C and AV switch Spiral cable
Connector Terminal
(Wire color) Connector Terminal
(Wire color)
M64 12 (R/G)
M15 24 (R/G)
Ye s
13 (G/W) 32 (G/W)
14 (B/Y) 31 (B/Y)
Terminals Continuity
A/C and AV switch
—
Connector Terminal (Wire color)
M64 12 (R/G)
Ground No
13 (G/W)
14 (B/Y)
SKIA5955E
Terminals Continuity
Spiral cable
Connector Terminal Connector Terminal
M15 24
M203 20
Ye s
32 16
31 17
SKIA5874E

AUDIO AV-45
C
D E
F
G H
I
J
L
M A
B
AV
Revision: 2005 July 2005 FX
2. CHECK AMP. ON SIGNAL
1. Connect audio unit connector.
2. Turn the ignition switch ACC.
3. Check voltage between audio unit harness connector M59 ter- minal 12 (G/W) and ground.
OK or NG
OK >> INSPECTION END (System is OK.)
NG >> Replace audio unit.
Vehicle Speed Signal InspectionAKS007VI
1. CHECK VEHICLE SPEED OPERATION
Start engine and drive vehicle.
Dose speedometer is operated normally?
Ye s > > G O T O 2 .
No >> Check combination meter trouble diagnosis. Refer to DI-15, "
Trouble Diagnosis" .
2. CHECK HARNESS
1. Turn the ignition switch OFF.
2. Disconnect audio unit connector and unified meter and A/C amp. connector.
3. Check continuity between audio unit harness connector M60 ter- minal 22 (W/L) and unified meter and A/C amp. harness connec-
tor M56 terminal 34 (W/L).
4. Check continuity between audio unit harness connector M60 ter- minal 22 (W/L) and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair harness or connector. 12 (G/W) – Ground : Approx. 12 V
SKIA6818E
22 (W/L) – 34(W/L) : Continuity should exist.
22 (W/L) – Ground : Continuity should not exist.
SKIA6807E

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
C
D E
F
G H
I
J
L
M A
B
AV
Revision: 2005 July 2005 FX
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
C
D E
F
G H
I
J
L
M A
B
AV
Revision: 2005 July 2005 FX
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
C
D E
F
G H
I
J
L
M A
B
AV
Revision: 2005 July 2005 FX
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.