2007 INFINITI FX35 radio

AV-1
AUDIO VISUAL, NAVIGATION & TELEPHONE SYS- TEM
K ELECTRICAL
CONTENTS
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AV
Revision: 2006 July 2007 FX35/FX45
AUDIO VISUAL, NAVIGATION & TELEPHONE SYSTEM
PRECAUTIONS .......................................................... 4
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ............................................................. ..... 4
PREPARATION ...................................................... ..... 5
Commercial Service Tools ................................... ..... 5
AUDIO .................................................................... ..... 6
System Description ............................................. ..... 6
AUDIO SYSTEM .............................................. ..... 6
SPEED SENSITIVE VOLUME SYSTEM ......... ..... 7
Component Parts Location .................................. ..... 7
Schematic — AUDIO — / With Navigation System ..... 8
Wiring Diagram — AUDIO — / With Navigation Sys-
tem ...................................................................... ..... 9
Schematic — AUDIO — Without Navigation System ... 19
Wiring Diagram — AUDIO — / Without Navigation
System ................................................................ ... 20
Terminals and Reference Value for Audio Unit .... ... 29
Terminals and Reference Value for BOSE Speaker
Amp. .................................................................... ... 31
Terminals and Reference Value for A/C and AV
Switch .................................................................. ... 33
Terminals and Reference Value for Woofer ......... ... 34
Terminals and Reference Value for Satellite Radio
Tuner ................................................................... ... 34
A/C and AV Switch Self-Diagnosis Function ....... ... 35
STARTING THE SELF-DIAGNOSIS MODE .... ... 35
DIAGNOSIS FUNCTION .................................. ... 35
EXITING THE SELF-DIAGNOSIS MODE ........ ... 35
Trouble Diagnosis ............................................... ... 36
Power Supply Circuit Inspection ......................... ... 37
Audio Steering Wheel Switch Inspection ............. ... 38
A/C and AV Switch Inspection ............................. ... 40
BOSE Speaker Amp. Inspection ......................... ... 40
Vehicle Speed Signal Inspection ......................... ... 41
Locking CD Auto-Changer Mechanism ............... ... 42
DAMPER LOCK PROCEDURE ....................... ... 42
Removal and Installation of Audio Unit ............... ... 43
REMOVAL ........................................................ ... 43
INSTALLATION ................................................ ... 43 Disassembly and Assembly for Audio Unit ..........
... 43
DISASSEMBLY ................................................ ... 43
ASSEMBLY ...................................................... ... 43
Removal and Installation for A/C and AV Switch . ... 44
REMOVAL ........................................................ ... 44
INSTALLATION ................................................ ... 44
Removal and Installation for Front Door Speaker ... 44
REMOVAL ........................................................ ... 44
INSTALLATION ................................................ ... 44
Removal and Installation for Rear Door Speaker ... 44 REMOVAL ........................................................ ... 44
INSTALLATION ................................................ ... 44
Removal and Installation for Instrument Speaker ... 45 REMOVAL ........................................................ ... 45
INSTALLATION ................................................ ... 45
Removal and Installation for Tweeter .................. ... 45
REMOVAL ........................................................ ... 45
INSTALLATION ................................................ ... 45
Removal and Installation for Woofer (BOSE Sys-
tem) ..................................................................... ... 45
REMOVAL ........................................................ ... 45
INSTALLATION ................................................ ... 45
Removal and Installation for BOSE Speaker Amp. ... 46
REMOVAL ........................................................ ... 46
INSTALLATION ................................................ ... 46
Removal and Installation of Satellite Radio Tuner ... 47
REMOVAL ........................................................ ... 47
INSTALLATION ................................................ ... 47
Removal and Installation of Satellite Radio Antenna ... 47
REMOVAL ........................................................ ... 47
INSTALLATION ................................................ ... 47
ANTENNA .............................................................. ... 48
System Description .............................................. ... 48
Wiring Diagram — M/ANT — .............................. ... 49
Terminals and Reference Value for Audio Unit .... ... 50
Antenna Amp. Inspection .................................... ... 50
Location of Antenna ............................................. ... 51
RADIO ANTENNA AND GPS ANTENNA ......... ... 51
SATELLITE RADIO ANTENNA ........................ ... 51
Window Antenna Repair ...................................... ... 52

AV-2Revision: 2006 July 2007 FX35/FX45
CHECK ELEMENT ...........................................
... 52
Removal and Installation of Roof Antenna .......... ... 53
REMOVAL ........................................................ ... 53
INSTALLATION ................................................. ... 53
Removal and Installation of Satellite Radio Antenna ... 53
INTEGRATED DISPLAY SYSTEM ......................... ... 54
System Description .............................................. ... 54
INTEGRATED DISPLAY SYSTEM ................... ... 54
Component Description ....................................... ... 55
DISPLAY CONTROL UNIT ............................... ... 55
DISPLAY ........................................................... ... 55
A/C AND AV SWITCH ...................................... ... 55
CAN Communication Unit .................................... ... 55
Component Parts Location .................................. ... 55
Schematic — INF/D — ........................................ ... 56
Wiring Diagram — INF/D — ................................ ... 57
Schematic — COMM — ...................................... ... 63
Wiring Diagram — COMM — .............................. ... 64
Terminals and Reference Value for Display Control
Unit ...................................................................... ... 69
Terminals and Reference Value for Display ......... ... 72
Terminals and Reference Value for A/C and AV
Switch .................................................................. ... 74
Special Note for Trouble Diagnosis ..................... ... 75
On Board Self-Diagnosis Function ...................... ... 75
DESCRIPTION ................................................. ... 75
DIAGNOSIS ITEM ............................................ ... 75
Self-Diagnosis Mode (DCU) ................................ ... 76
OPERATION PROCEDURE ............................. ... 76
SELF-DIAGNOSIS RESULT ............................ ... 77
Confirmation/Adjustment Mode ........................... ... 79
OPERATION PROCEDURE ............................. ... 79
DISPLAY DIAGNOSIS ...................................... ... 80
VEHICLE SIGNALS .......................................... ... 80
AUTO CLIMATE CONTROL ............................. ... 81
CAN DIAG SUPPORT MONITOR ....................... ... 81
OPERATION PROCEDURE ............................. ... 81
A/C and AV Switch Self-Diagnosis Function ........ ... 82
STARTING THE SELF-DIAGNOSIS MODE ..... ... 82
DIAGNOSIS FUNCTION .................................. ... 82
EXITING THE SELF-DIAGNOSIS MODE ........ ... 82
CAN Communication Check ................................ ... 83
Unable to Operate System with A/C and AV Switch ... 84
All Images Are Not Displayed .............................. ... 86
Tint Is Strange for The RGB Image ..................... ... 88
RGB Image Is Rolling .......................................... ... 90
Values for All Items in The TRIP Screen Do Not
Change ................................................................ ... 91
Values for Items, “Driving Distance” and “Average
Speed” Do Not Change ....................................... ... 91
Values for All Items in The FUEL ECONOMY Screen
Do Not Change .................................................... ... 91
Example of Symptoms Possible No Malfunction . ... 92
DISPLAY ........................................................... ... 92
Removal and Installation of Display ..................... ... 92
Removal and Installation of Display Control Unit . ... 92
REMOVAL ........................................................ ... 92
INSTALLATION ................................................. ... 92
Removal and Installation of A/C and AV Switch .. ... 92 NAVIGATION SYSTEM ..........................................
... 93
System Description .............................................. ... 93
NAVIGATION SYSTEM .................................... ... 94
Component Description ....................................... ... 97
NAVI CONTROL UNIT ...................................... ... 97
GPS ANTENNA ................................................ ... 97
DISPLAY CONTROL UNIT ............................... ... 97
DISPLAY ........................................................... ... 98
A/C AND AV SWITCH ....................................... ... 98
CAN Communication Unit .................................... ... 98
Component Parts Location .................................. ... 98
Schematic — NAVI — .......................................... ... 99
Wiring Diagram — NAVI — .................................. .100
Schematic — COMM — ....................................... .107
Wiring Diagram — COMM — ............................... .108
Terminals and Reference Value for NAVI Control
Unit ....................................................................... .113
Terminals and Reference Value for Display Control
Unit ....................................................................... .115
Terminals and Reference Value for Display ......... .119
Terminals and Reference Value for A/C and AV
Switch .................................................................. .121
Special Note for Trouble Diagnosis ...................... .122
On Board Self-Diagnosis Function ....................... .122
DESCRIPTION ................................................. .122
DIAGNOSIS ITEM ............................................ .122
Self-Diagnosis Mode (DCU) ................................. .123
OPERATION PROCEDURE ............................. .123
SELF-DIAGNOSIS RESULT ............................. .124
Self-Diagnosis Mode (NAVI) ................................ .126
OPERATION PROCEDURE ............................. .126
SELF-DIAGNOSIS RESULT ............................. .128
Confirmation/Adjustment Mode ............................ .129
OPERATION PROCEDURE ............................. .129
DISPLAY DIAGNOSIS ...................................... .130
VEHICLE SIGNALS .......................................... .130
AUTO CLIMATE CONTROL ............................. .131
NAVIGATION .................................................... .131
CAN DIAG SUPPORT MONITOR ....................... .136
OPERATION PROCEDURE ............................. .136
A/C and AV Switch Self-Diagnosis Function ........ .137
STARTING THE SELF-DIAGNOSIS MODE ..... .137
DIAGNOSIS FUNCTION .................................. .137
EXITING THE SELF-DIAGNOSIS MODE ........ .137
CAN Communication Check ................................ .138
Unable to Operate System with A/C and AV Switch .139
All Images Are Not Displayed .............................. .141
Status Screen for Audio and A/C Is Not Displayed
When Showing Map Screen ................................ .143
Vehicle Mark Is Not Displayed Properly ............... .144
Tint Is Strange for The RGB Image ...................... .145
Tint Is Strange for The RGB Image (Only NAVI
Screen) ................................................................ .147
RGB Image Is Rolling .......................................... .149
Values for All Items in The TRIP Screen Do Not
Change ................................................................ .150
Values for Items, “Driving Distance” and “Average
Speed” Do Not Change ........................................ .150
Values for All Items in The FUEL ECONOMY Screen

AV-6
AUDIO
Revision: 2006 July 2007 FX35/FX45
AUDIOPFP:28111
System DescriptionNKS003AI
AUDIO SYSTEM
Refer to Owner's Manual for audio system operating instructions.
Power is supplied at all times

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

to audio unit terminal 6

to A/C and AV switch terminal 1

to display control unit terminal 1

to woofer terminal 1

to satellite radio tuner terminal 12 (With satellite radio) and

to option connector–2 for satellite radio tuner terminal 12 (Without satellite radio),

through 20A fuse [No.17, located in the fuse block (J/B)]

to BOSE speaker amp. terminal 1.
With the ignition switch in the ACC or ON position, power is supplied

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

to audio unit terminal 10

to A/C and AV switch terminal 2

to display control unit terminal 10

to satellite radio tuner terminal 16 (With satellite radio) and

to option connector–2 for satellite radio tuner terminal 11 (Without satellite radio).
Ground is supplied through the case of the audio unit.
Ground is also supplied

to BOSE speaker amp. terminal 17

to woofer terminal 2

to satellite radio tuner terminal 15 (With satellite radio) and

to option connector–2 for satellite radio receiver terminal 10 (Without satellite radio)

through body ground B203 and B210,

to A/C and AV switch terminal 5

to display control unit terminals 3,13 and

to display terminal 1

through body ground M35, M45 and M85.
Audio unit, A/C and audio controller are connected by FPC (Flexible Print Circuit).
A/C and audio controller integrates A/C switches and audio switches.
When A/C and audio controller is pressed to audio switch, it sends audio signal to audio unit. Then audio sig-
nals are supplied

through audio unit terminals 1, 2, 3, 4, 13, 14, 15, and 16

to BOSE speaker amp. terminals 23, 24, 25, 26, 27, 28, 29, and 30.
Audio signals are amplified by the BOSE speaker amp.
The amplified audio signals are supplied

through BOSE speaker amp. terminals 2, 3, 4, 9,10,11,12, 13, 14, 15, 16, 18, 19 and 20

to terminals 1 and 2 of front door speaker LH and RH

to terminals 1 and 2 of rear door speaker LH and RH

to terminals 1 and 2 of tweeter LH and RH

to terminals 1 and 2 of instrument speaker LH, RH, and CENTER, and

to terminals 7 and 8 of woofer.
When one of audio steering wheel switch is pressed to ON (With telephone system), mode ON (Without
telephone system), seek up, or volume up, resistance in steering switch circuit changes depending on which
button is pressed.

AV-30
AUDIO
Revision: 2006 July 2007 FX35/FX45
22 (W/L) Ground Vehicle speed signal
(2 pulse) Input ON When vehicle speed is
approx. 40 km/h (25 MPH)
23 (LG) Ground Communication signal
(DCU-AUDIO) Input ACC Operate audio volume
switch
25 — Shield — — — —
46 (B)* 45 (R)* Satellite radio audio
signal LH Input ONReceive satellite radio audio
signal
48 (G)* 47 (W)* Satellite radio audio
signal RH Input ON
Receive satellite radio audio
signal
49* — Shield — — — —
52 (L)* Ground Communication signal
REQ (SAT-AUDIO) Input ON
When setting to satellite
radio mode
53 (G)* Ground Communication signal
Rx (SAT-AUDIO) Input ON When setting to satellite
radio mode
54 (Y)* Ground Communication signal
Tx (AUDIO-SAT) Output ONWhen setting to satellite
radio mode
Te r m i n a l
(Wire color) Item Signal
input/
output Condition
Reference value
+– Ignition
switch Operation
ELF1080D
SKIB3607E
SKIB3609E
SKIB3609E
SKIB7338E
SKIB7337E
SKIB7336E

AUDIO AV-31
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Revision: 2006 July 2007 FX35/FX45
*: With satellite radio
Terminals and Reference Value for BOSE Speaker Amp.NKS003L9
Terminal
(Wire color) Item Signal
input/
output Condition
Reference value
+– Ignition
switch Operation
1 (R) Ground Battery power supply Input OFF — Battery voltage
9 (LG) 10 (B/Y) Audio signal rear door
speaker LH Output ACC Receive audio signal
11 (OR) 12 (B/P) Audio signal rear door
speaker RH Output ACC Receive audio signal
13 (L) 14 (B/W) Audio signal front door
speaker LH Output ACC Receive audio signal
15 (BR) 16 (B/R) Audio signal front door
speaker RH Output ACC Receive audio signal
17 (B) Ground Ground — ON — Approx. 0 V
18 (R/L) 2 (B) Audio signal instru-
ment speaker center Output ACC Receive audio signal
19 (W) 3 (B) Audio signal woofer Output ACC Receive audio signal
SKIB3609E
SKIB3609E
SKIB3609E
SKIB3609E
SKIB3609E
SKIB3609E

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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AV
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