2007 INFINITI FX35 audio

AUDIO AV-33
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Revision: 2006 July 2007 FX35/FX45
Terminals and Reference Value for A/C and AV SwitchNKS003LA

*1: With telephone system

*2: Without telephone system Terminal
(Wire color) Item Signal
input/
output Condition
Reference value
+– Ignition
switch Operation
1 (W/L) Ground Battery power supply Input OFF — Battery voltage 2 (LG) Ground ACC power supply Input ACC — Battery voltage
5 (B) Ground Ground — ON — Approx. 0 V
6 (PU) Ground Communication
signal (+) Input/
Output ON —
7 — Shield — — — —
8 (LG) Ground Communication
signal (–) Input/
Output ON —
12 (R/W) Ground Steering SW A Input ON Press and hold PTT
*1
switch Approx. 0 V
Press and hold MODE
*2
switch Approx. 0 V
Press and hold SEEK UP
switch Approx. 1.7 V
Press and hold VOL UP
switch Approx. 3.3 V
Except for above Approx. 5 V
13 (G/W) Ground Steering SW B Input ON Press and hold MODE
*1
switch Approx. 0 V
Press and hold POWER
*2
switch Approx. 0 V
Press and hold SEEK
DOWN switch Approx. 1.7 V
Press and hold VOL DOWN
switch Approx. 3.3 V
Except for above Approx. 5 V
14 (B/Y) Ground Steering SW ground — ON — Approx. 0 V
SKIB7378E
SKIB7379E

AV-34
AUDIO
Revision: 2006 July 2007 FX35/FX45
Terminals and Reference Value for WooferNKS003AS
Terminals and Reference Value for Satellite Radio TunerNKS003LB
Te r m i n a l
(Wire color) Item Signal
input/
output Condition
Voltage
+– Ignition
switch Operation
1 (G/R) Ground Battery power supply Input OFF — Battery voltage 2 (B) Ground Ground — ON — Approx. 0 V
5 (P) Ground Amp ON signal Input ACC — Approx. 12 V
7 (W) 8 (B) Audio signal woofer Input ACC Receive audio signal
SKIB3609E
Te r m i n a l
(Wire color) Item Signal
input/
output Condition
Reference value
+– Ignition
switch Operation
2 (B) 1 (R) Satellite radio audio
signal LH Output ON Receive satellite radio audio
signal
4 (G) 3 (W) Satellite radio audio
signal RH Output ONReceive satellite radio audio
signal
5 — Shield — — — —
6 — Shield — — — —
8 (L) Ground Communication signal
REQ (SAT-AUDIO) Output ONWhen setting to satellite
radio mode
9 (L/R) Ground Communication signal
Tx (SAT-AUDIO) Output ON
When setting to satellite
radio mode
SKIB3609E
SKIB3609E
SKIB7338E
SKIB7337E

AUDIO AV-35
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Revision: 2006 July 2007 FX35/FX45
A/C and AV Switch Self-Diagnosis FunctionNKS003AT
It can check ON/OFF operation of each switch in the A/C and AV switch and diagnose the input signals to the
audio steering wheel switch.
STARTING THE SELF-DIAGNOSIS MODE
1. Turn ignition switch from OFF to ACC.
2. Within 10 seconds press and hold the switches “1” and “6” 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 and audio steering wheel
switch is pressed.

Continuity of harness between A/C and AV switch and audio steering switch.
NOTE:
Rear window defogger switch operation is not checked. (No beep sound even under normal status)
EXITING THE SELF-DIAGNOSIS MODE

Turn ignition switch OFF.
10 (L/W) Ground Communication signal
Rx (AUDIO-SAT) Input ON When setting to satellite
radio mode
12 (Y) Ground Battery power supply Input OFF — Battery voltage
15 (B) Ground Ground — ON — Approx. 0 V
16 (P) Ground ACC power supply Input ACC — Battery voltage 17 — Satellite radio antenna — — — — Terminal
(Wire color) Item Signal
input/
output Condition
Reference value
+– Ignition
switch Operation
SKIB7336E
SKIB8660E

AV-36
AUDIO
Revision: 2006 July 2007 FX35/FX45
Trouble DiagnosisNKS003LC

The majority of the audio malfunctions are the result of outside causes (bad CD, electromagnetic interfer-
ence, etc.). Check the symptoms below to diagnose the malfunction.

The vehicle itself can be a source of noise if noise prevention parts or electrical equipment is malfunction-
ing. Check if noise is caused and/or changed by engine speed, ignition switch turned to each position, and
operation of each piece of electrical equipment, and then determine the cause.

Make sure that other operation except audio system can be performed with A/C and AV switch. If these
operations are inoperative with A/C and AV switch, refer to AV- 8 4 , "
Unable to Operate System with A/C
and AV Switch" (Without navigation system), or AV- 1 3 9 , "Unable to Operate System with A/C and AV
Switch" (With navigation system).

Refer to "SERVICE BULLETIN ITB04-055" for the diagnosis of satellite radio.
NOTE:
Noise resulting from variations in field strength, such as fading noise and multi-path noise, or external noise
from trains and other sources. It is not a malfunction.

Fading noise: This noise occurs because of variations in the field strength in a narrow range due to moun-
tains or buildings blocking the signal.

Multi-path noise: This noise results from a time difference between the broadcast waves directly from the
station arriving at the antenna and the waves reflected by mountains or buildings.
Symptom Possible malfunction location
Audio system does not work properly.

Audio unit power supply circuit

Communication signal circuit between audio unit and display control unit

A/C and AV switch

Audio unit
No sound can be heard from all speakers.

BOSE speaker amp. power supply and ground circuit

BOSE speaker amp. ON signal circuit

Audio unit

BOSE speaker amp.
No sound can be heard from one or several speakers.

Audio signal circuit between audio unit and BOSE speaker amp.

Audio signal circuit between BOSE speaker amp. and speaker

Speaker

Tw e e te r

Audio unit

BOSE speaker amp.
No sound can be heard from woofer.

Audio signal circuit between BOSE speaker amp. and woofer

Woofer

BOSE speaker amp.
No sound can be heard from radio or noise is caught.

Antenna amp. ON signal circuit

Antenna feeder

Roof antenna

Antenna amp.

Audio unit
Audio steering switch does not operate properly.

Remote control signal circuit between audio steering switch and A/C and
AV switch

Audio steering switch

Spiral cable

TEL adapter unit (With telephone system)

A/C and AV switch

AUDIO AV-37
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Revision: 2006 July 2007 FX35/FX45
Power Supply Circuit InspectionNKS003AW
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 audio unit harness connector terminals and ground.
2. 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 between each unit and fuse.
Unit Terminal Signal name Fuse No.
Audio unit 6 Battery power supply 32
10 ACC power supply 6
BOSE speaker amp. 1 Battery power supply 17
Woofer 1 Battery power supply 32
Terminals Ignition
switch Voltag e
(+)
(–)
Connector Terminal
M58 6 Ground OFF Battery voltage
10 Ground ACC Battery voltage
PKIA3814E
Terminals Ignition
switch Voltag e
(+)
(–)
Connector Terminal
B212 1 Ground OFF Battery voltage
B223 1 Ground OFF Battery voltage
SKIA8931E

AV-38
AUDIO
Revision: 2006 July 2007 FX35/FX45
3. CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BOSE speaker amp. and woofer connectors.
3. Check continuity between BOSE speaker amp. harness connec- tor B212 terminal 17 and ground.
4. Check continuity between woofer harness connector B223 ter- minal 2 and ground.
OK or NG
OK >> INSPECTION END (System is OK.)
NG >> Repair harness or connector.
Audio Steering Wheel Switch InspectionNKS003AX
1. CHECK 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 audio steering wheel switch operate normally?
YES >> INSPECTION END
NO >>

GO TO 2. (Without telephone system)

GO TO 3. (With telephone system)
2. CHECK HARNESS
1. Turn ignition switch OFF.
2. Disconnect A/C and AV switch and spiral cable connectors.
3. Check continuity between A/C and AV switch harness connector M64 terminals 12, 13, 14 and spiral cable harness connector
M15 terminals 24, 32, 31.
4. Check continuity between A/C and AV switch and ground.
OK or NG
OK >> GO TO 5.
NG >> Repair harness or connector. 17 – Ground : Continuity should exist.
SKIA4312E
2 – Ground : Continuity should exist.
SKIB8692E
12 – 24 : Continuity should exist.
13 – 32 : Continuity should exist.
14 – 31 : Continuity should exist.
12, 13, 14 – ground : Continuity should not exist.
SKIA5955E

AUDIO AV-39
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Revision: 2006 July 2007 FX35/FX45
3. CHECK HARNESS
1. Turn ignition switch OFF.
2. Disconnect A/C and AV switch and TEL adapter unit connectors.
3. Check continuity between A/C and AV switch harness connector (A) M64 terminals 12, 13, 14 and teladapter unit harness con-
nector (B) M102 terminals 17, 18, 19.
4. Check continuity between A/C and AV switch and ground.
OK or NG
OK >> GO TO 4.
NG >> Repair harness or connector.
4. CHECK HARNESS
1. Disconnect spiral cable connector.
2. Check continuity between TEL adapter unit harness connector (A) M102 terminals 12, 13, 14 and spiral cable harness connec-
tor (B) M15 terminals 24, 32, 31.
3. Check continuity between TEL adapter unit and ground.
OK or NG
OK >> GO TO 5.
NG >> Repair harness or connector.
5. CHECK SPIRAL CABLE
1. Disconnect spiral cable connector (Audio steering wheel switch harness side).
2. Check continuity between spiral cable connector M15 terminals 24, 31, 32 and spiral cable connector M203 terminals 20, 17, 16.
OK or NG
OK >> GO TO 6.
NG >> Replace spiral cable. 12 – 17 : Continuity should exist.
13 – 18 : Continuity should exist.
14 – 19 : Continuity should exist.
12, 13, 14 – ground : Continuity should not exist.
PKIC9369E
12 – 24 : Continuity should exist.
13 – 32 : Continuity should exist.
14 – 31 : Continuity should exist.
12, 13, 14 – ground : Continuity should not exist.
SKIB8681E
24 – 20 : Continuity should exist.
31 – 17 : Continuity should exist.
32 – 16 : Continuity should exist.
SKIA5874E

AV-40
AUDIO
Revision: 2006 July 2007 FX35/FX45
6. CHECK AUDIO STEERING WHEEL SWITCH RESISTANCE
Check resistance audio steering wheel switch terminals.

*1: Without telephone system

*2: With telephone system
OK or NG
OK >> INSPECTION END
NG >> Replace audio steering wheel switch.
A/C and AV Switch InspectionNKS003AY
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 >> Replace A/C and AV switch.
BOSE Speaker Amp. InspectionNKS003AZ
1. CHECK HARNESS
1. Turn ignition switch OFF.
2. Disconnect audio unit and BOSE speaker amp. connectors.
3. Check continuity between audio unit harness connector M59 ter- minal 12 and BOSE speaker amp. harness connector B213 ter-
minal 31.
4. Check continuity between audio unit harness connector M59 ter- minal 12 and ground.
OK or NG
OK >> GO TO 2.
NG >> Repair harness or connector.
Terminal Signal name Condition Resistance
( Ω )
16 17 Power
*1Depress power switch. Approx. 0
Mode
*2Depress mode switch. Approx. 0
Seek down Depress (station) down switch. Approx. 165
Volume (down) Depress volume down switch. Approx. 652
20 Mode
*1Depress mode switch. Approx. 0
PTT
*2Depress PTT switch. Approx. 0
Seek up Depress (station) up switch. Approx. 165
Volume (up) Depress volume up switch. Approx. 652
SKIA5010E
12 – 31 : Continuity should exist.
12 – Ground : Continuity should not exist.
SKIA6816E