2004 INFINITI FX35 ground

AUDIO
AV-33
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AV
Revision: 2004 November 2004 FX35/FX45
Terminals and Reference Value for A/C and AV SwitchAKS00A2B
Terminal No.
(Wire color)
ItemSignal
input/
outputCondition
Vo l ta g eExample of
symptom
+–Igni-
tion
switchOperation
1 (W/L) GroundBattery power
supply Input OFF – Battery voltageSystem does not
work properly.
2 (LG/R) GroundACC power-
supplyInput ACC – Battery voltageSystem does not
work properly.
3 (R/L) GroundIllumination
signal Input OFFLighting switch is
ONApprox. 12VA/C and AV
switch illumina-
tion does not
come on when
lighting switch is
ON. Lighting switch is
OFFApprox. 0V
4 (R/Y) GroundIllumination
control signalOutput ONIllumination control
switch is operated
by lighting switch in
1st or 2nd position.Changes between approx.0V
and approx.12VA/C and AV
switch illumina-
tion does not
come on when
lighting switch is
ON.
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
Steering wheel
audio controls
do not function. Press SEEK UP
switch.Approx. 1.7V
Press VOL UP
switch.Approx. 3.3V
Except for above Approx. 5V
13 (G/W) GroundRemote con-
troller BInput ONPress POWER
switch.Approx. 0V
Steering wheel
audio controls
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–– – –Steering wheel
audio controls
do not function.
SKIA0175E
SKIA0176E

AV-34
AUDIO
Revision: 2004 November 2004 FX35/FX45
Terminals and Reference Value for WooferAKS00AM2
Terminal No.
(Wire color)
ItemSignal
input/
outputCondition
VoltageExample of
symptom
+–Igni-
tion
switchOperation
1 (G/R) GroundBattery power
supplyInput OFF – Battery voltageNo sound from
woofer.
2 (B) Ground Ground – ON – Approx.0VNo sound from
woofer.
5 (P) GroundAmp ON sig-
nal Input ACC – Approx. 12VNo sound from
woofer.
7 (W) 8 (B)Woofer sound
signalInput ACC Receve audio signal No sound from
foofer.
SKIA0177E

AV-36
AUDIO
Revision: 2004 November 2004 FX35/FX45
MALFUNCTION WITH RADIO, TAPE AND CD (BOSE SYSTEM)
Make sure that operation excepting audio system can be done with A/C and AV switch. If not, refer AV- 8 4 , "A/
C and AV Switch Does Not Operate" (without navigation system), AV- 1 3 1 , "Self-Diagnosis Mode (DCU)" (with
navigation system) to repair malfunctioning parts.
Symptom Check item
Inoperative

Audio unit power supply circuit. Refer to AV- 3 9 , "Power Supply Circuit
Inspection" .

Audio communication line (Without navigation system). Refer to AV- 8 2 ,
"Audio Communication Line Inspection" .

Audio communication line (With navigation system). Refer to AV-131, "Self-
Diagnosis Mode (DCU)" .

A/C and AV switch. Refer to AV- 4 1 , "A/C and AV Switch Inspection" .

Audio unit
Audio steering wheel switch dose not operate

Audio steering wheel switch. Refer to AV-40, "Audio Steering Wheel Switch
Inspection" .

A/C and AV switch. Refer to AV- 4 1 , "A/C and AV Switch Inspection" .
One or several speaker does not sound

BOSE speaker amp. power supply and ground circuit. Refer to AV- 3 9 ,
"Power Supply Circuit Inspection" .

Front door speaker

Rear door speaker

BOSE speaker amp.AV- 4 2 , "BOSE Speaker Amp. Inspection" .

Audio unit
Woofer does not sound

Woofer

BOSE speaker amp
Speed sensitive volume system dose not work

Vehicle speed signal. Refer to AV- 4 2 , "Vehicle Speed Signal Inspection" .

Audio unit
Poor sound

Audio unit

BOSE speaker amp

Speaker

Woofer
Noisy

Audio unit

BOSE speaker amp

Each electrical equipment

AV-38
AUDIO
Revision: 2004 November 2004 FX35/FX45
Noise InspectionAKS00BMR
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 running 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
electrical components are oper-
ating.A cracking or snapping sound occurs with the
operation of various switches.

Relay malfunction, radio malfunction
The noise occurs when various motors are oper-
ating.

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 win-
dow 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.

Ground wire of body parts.

Ground due to incorrectinstallation of
parts.

Wiring connections or ashort circuit.

AUDIO
AV-39
C
D
E
F
G
H
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J
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MA
B
AV
Revision: 2004 November 2004 FX35/FX45
Power Supply Circuit InspectionAKS00BMS
1. CHECK FUSE

Make sure 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 harness connector terminals and ground.
2. Turn ignition switch OFF.
3. Check voltage between BOSE speaker amp. harness connector
terminal or woofer harness connector terminal 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.
Unit Signal Fuse No.
Audio unitBattery power supply 32
ACC power supply 6
BOSE speaker amp. Battery power supply 17
Woofer Battery power supply 32
UnitTerminal No.
Ignition switch Voltage (+)
(-)
Connec-
torTerminal
(Wire
color)
Audio
unitM586 (W/L) Ground OFF Battery voltage
10 (LG/R) Ground ACC Battery voltage
PKIA3814E
UnitTerminal No.
Ignition
switchVoltage (+)
(-)
ConnectorTerminal
(Wire color)
BOSE
speaker
amp.B212 1 (R) Ground OFF Battery voltage
Woofer B223 1 (GY) Ground OFF Battery voltage
SKIA8931E

AV-40
AUDIO
Revision: 2004 November 2004 FX35/FX45
3. CHECK GROUND CIRCUIT
1. Disconnect BOSE speaker amp. connector and woofer connector.
2. Check continuity between BOSE speaker amp. harness connec-
tor B212 terminal 17 (B) and ground.
3. Check continuity between woofer harness connector B66 termi-
nal 2 (B) and ground.
OK or NG
OK >> INSPECTION END (System is OK)
NG >> Repair harness or connector.
Audio Steering Wheel Switch InspectionAKS00BMT
1. A/C AND AV SWITCH SELF-DIAGNOSIS FUNCTION
1. Start A/C and AV switch self-diagnosis function. Refer to AV- 3 5 , "
A/C and AV Switch Self-Diagnosis Func-
tion" .
2. Operate audio steering wheel switch.
Does the audio steering wheel switch is operated normally?
YES >> INSPECTION END (System is OK)
NO >> GO TO 2
2. CHECK HARNESS
1. Turn ignition switch OFF.
2. Disconnect A/C and AV switch connector and spiral cable connector (Vehicle harness side).
3. Check continuity between A/C and AV switch harness connector
M64 terminal 12 (R/G), 13 (G/W), 14 (B/Y) and spiral cable har-
ness connector M15 terminal 24 (R/G), 32 (G/W), 31 (B/Y).
4. Check continuity between A/C and AV switch harness connector
M64 terminal 12 (R/G),13 (G/W),14 (B/Y) and ground.
OK or NG
OK >> GO TO 3
NG >> Repair harness or connector.17 – Ground :Continuity should exist.
SKIA4312E
2 – Ground :Continuity should exist.
SKIA6786E
12 – 24 : Continuity should exist.
13 – 32 : Continuity should exist.
14 – 31 : Continuity should exist.
12, 13, 14 – Ground :Continuity should not exist.
SKIB0522E

AUDIO
AV-41
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AV
Revision: 2004 November 2004 FX35/FX45
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.
4. CHECK AUDIO STEERING WHEEL SWITCH
Check resistance audio steering wheel switch connector M203 ter-
minals.
OK or NG
OK >> Replace A/C and AV switch.
NG >> Replace audio steering wheel switch.
A/C and AV Switch InspectionAKS00BMU
1. A/C AND AV SWITCH SELF-DIAGNOSIS FUNCTION
1. Start A/C and AV switch self-diagnosis function. Refer to AV- 3 5 , "
A/C and AV Switch Self-Diagnosis Func-
tion" .
2. Operate A/C and AV switch.
Does the A/C and AV switch is operated normally?
YES >> INSPECTION END (System is OK)
NO >> GO TO 2.
2. CHECK A/C AND AV SWITCH POWER SUPPLY AND GROUND
Check A/C and AV switch power supply and gruoud circuit. Refer to AV- 8 0 , "
Power Supply and Ground Circuit
Check for A/C and AV Switch" (Without Navigation System), AV- 1 4 9 , "Power Supply and Ground Circuit
Check for A/C and AV Switch" (With Navigation System).
OK or NG
OK >> Replace A/C and AV switch.
NG >> Repair malfunctioning parts.24 – 20 : Continuity should exist.
31 – 17 : Continuity should exist.
32 – 16 : Continuity should exist.
SKIB0521E
Terminal Switch name ConditionResistance
(Ω)
16
17Power Depress power switch. Approx. 0
Seek down Depress seek down switch. Approx. 165
Volume (down) Depress volume down switch. Approx. 652
20Mode Depress mode switch. Approx. 0
Seek up Depress seek up switch. Approx. 165
Volume (up) Depress volume up switch. Approx. 652
SKIA9400E

AV-42
AUDIO
Revision: 2004 November 2004 FX35/FX45
BOSE Speaker Amp. InspectionAKS00BMV
1. CHECK HARNESS
1. Disconnect audio unit connector and BOSE speaker amp. con-
nector.
2. Check continuity between audio unit harness connector M59 ter-
minal 12 (G/W) and BOSE speaker amp. harness connector
B213 terminal 31 (P).
3. Check continuity between audio unit harness connector M59 ter-
minal 12 (G/W) and ground.
OK or NG
OK >> GO TO 2
NG >> Repair harness or connector.
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 InspectionAKS00BMW
1. CHECK VEHICLE SPEED OPERATION
Start engine and drive vehicle.
Dose speedometer is operated normally?
YES >> GO TO 2
NO >> Check combination meter trouble diagnosis. Refer to DI-13, "
Diagnosis Flow" .
2. CHECK HARNESS
1. Turn 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 – 31 : Continuity should exist.
12 – Ground : Continuity should not exist.
SKIA6816E
12 – Ground : More than approx. 6.5V
SKIA6818E
22 – 34 : Continuity should exist.
22 – Ground : Continuity should not exist.
SKIA6807E