2004 INFINITI FX35 rear door

ATC-1
AUTOMATIC AIR CONDITIONER
J AIR CONDITIONER
CONTENTS
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SECTION AT C
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AT C
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AUTOMATIC AIR CONDITIONER
PRECAUTIONS .......................................................... 5
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 5
Precautions for Working with HFC-134a (R-134a) ..... 5
CONTAMINATED REFRIGERANT ....................... 5
General Refrigerant Precautions .............................. 7
Lubricant Precautions .............................................. 7
Precautions for Refrigerant Connection ................... 8
ABOUT ONE-TOUCH JOINT ................................ 8
FEATURES OF NEW TYPE REFRIGERANT
CONNECTION .................................................... 10
O-RING AND REFRIGERANT CONNECTION .... 11
Precautions for Servicing Compressor ................... 13
Precautions for Service Equipment ........................ 13
RECOVERY/RECYCLING EQUIPMENT ............ 13
ELECTRONIC LEAK DETECTOR ...................... 13
VACUUM PUMP ................................................. 14
MANIFOLD GAUGE SET .................................... 14
SERVICE HOSES ............................................... 14
SERVICE COUPLERS ........................................ 15
REFRIGERANT WEIGHT SCALE ...................... 15
CHARGING CYLINDER ...................................... 15
Precautions for Leak Detection Dye ....................... 16
IDENTIFICATION ................................................ 16
IDENTIFICATION LABEL FOR VEHICLE ........... 16
Wiring Diagrams and Trouble Diagnosis ................ 16
PREPARATION ......................................................... 17
Special Service Tools ............................................. 17
HFC-134a (R-134a) Service Tools and Equipment ... 18
Commercial Service Tools ...................................... 20
REFRIGERATION SYSTEM ..................................... 21
Refrigerant Cycle ................................................... 21
REFRIGERANT FLOW ....................................... 21
FREEZE PROTECTION ..................................... 21
Refrigerant System Protection ............................... 21
REFRIGERANT PRESSURE SENSOR ............. 21
PRESSURE RELIEF VALVE ............................... 21
V-6 Variable Displacement Compressor ................. 22
GENERAL INFORMATION ................................. 22DESCRIPTION .................................................... 23
Component Layout ................................................. 26
LUBRICANT .............................................................. 27
Maintenance of Lubricant Quantity in Compressor ... 27
LUBRICANT ........................................................ 27
LUBRICANT RETURN OPERATION .................. 27
LUBRICANT ADJUSTING PROCEDURE FOR
COMPONENTS REPLACEMENT EXCEPT
COMPRESSOR .................................................. 28
LUBRICANT ADJUSTING PROCEDURE FOR
COMPRESSOR REPLACEMENT ....................... 29
AIR CONDITIONER CONTROL ............................... 30
Description of Air Conditioner LAN Control System ... 30
System Construction .............................................. 30
OPERATION ........................................................ 30
TRANSMISSION DATA AND TRANSMISSION
ORDER ............................................................... 31
AIR MIX DOOR CONTROL (AUTOMATIC TEM-
PERATURE CONTROL) ..................................... 32
FAN SPEED CONTROL ...................................... 32
INTAKE DOOR CONTROL ................................. 32
OUTLET DOOR CONTROL ................................ 32
MAGNET CLUTCH CONTROL ........................... 33
SELF-DIAGNOSTIC SYSTEM ............................ 33
Description of Control System ................................ 34
Control Operation ................................................... 34
DISPLAY SCREEN .............................................. 35
AUTO SWITCH ................................................... 35
TEMPERATURE SWITCH (POTENTIO TEM-
PERATURE CONTROL) (DRIVER SIDE) ........... 35
TEMPERATURE SWITCH (POTENTIO TEM-
PERATURE CONTROL) (PASSENGER SIDE) ... 35
RECIRCULATION (REC) SWITCH ..................... 35
FRESH (FRE) SWITCH ...................................... 35
DEFROSTER (DEF) SWITCH ............................. 35
REAR WINDOW DEFOGGER SWITCH ............. 35
OFF SWITCH ...................................................... 35
A/C SWITCH ....................................................... 35
MODE SWITCH .................................................. 35
FAN SWITCH ...................................................... 35

AIR CONDITIONER CONTROL
ATC-35
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DISPLAY SCREEN
Displays the operational status of the system.
AUTO SWITCH

The compressor, intake doors, air mix doors, outlet doors and blower speed are automatically controlled
so that the in-vehicle temperature will reach, and be maintained at the set temperature selected by the
operator.

When pressing AUTO switch, air inlet, air outlet, fan speed, and discharge air temperature are automati-
cally controlled.
TEMPERATURE SWITCH (POTENTIO TEMPERATURE CONTROL) (DRIVER SIDE)
Increases or decreases the set temperature.
TEMPERATURE SWITCH (POTENTIO TEMPERATURE CONTROL) (PASSENGER SIDE)

Increases or decreases the set temperature.

When the temperature switch is pressed, the dual switch indicator will automatically illuminate.
RECIRCULATION (REC) SWITCH

When REC switch is ON, REC switch indicator turns ON, and air inlet is fixed to REC.

When REC switch is ON and is pressed for approximately 1.5 seconds or longer, REC and FRE switch
indicators blink twice. Then, automatic control mode is entered. Inlet status is displayed even during auto-
matically controlled.

When FRE switch is turned ON, or when compressor is turned from ON to OFF, REC switch is automati-
cally turned OFF (fixed to FRE mode). REC mode can be re-entered by pressing REC switch again.

REC switch is not operated when DEF switch is turned ON, or at the D/F position.
FRESH (FRE) SWITCH

When FRE switch is ON, FRE switch indicator turns ON, and air inlet is fixed to FRE.

When FRE switch is ON and is pressed for approximately 1.5 seconds or longer, REC and FRE switch
indicators blink twice. Then, automatic control mode is entered. Inlet status is displayed even during auto-
matically controlled.

When REC switch is turned ON, FRE switch is automatically turned OFF (fixed to REC mode). FRE mode
can be re-entered by pressing FRE switch again.
DEFROSTER (DEF) SWITCH
Positions the air outlet doors to the defrost position. Also positions the intake doors to the fresh air position.
REAR WINDOW DEFOGGER SWITCH
When illumination is ON, rear window is defogged.
OFF SWITCH
The compressor and blower are OFF, the intake doors are set to the fresh air position, and the air outlet doors
are set to the foot (75% foot and 25% defrost) position.
A/C SWITCH
The compressor is ON or OFF.
(Pressing the A/C switch when the AUTO switch is ON will turn off the A/C switch and compressor.)
MODE SWITCH
Controls the air discharge outlets.
FAN SWITCH
Manually control the blower speed. Seven speeds are available for manual control (as shown on the display
screen).
DUAL SWITCH (WITH LEFT AND RIGHT VENTILATION TEMPERATURE SEPARATELY CON-
TROL SYSTEM)

When the DUAL switch indicator is not illuminated and the DUAL switch is pressed, the driver-side setting
temperature and passenger-side setting temperature can each be set independently.

When the DUAL switch indicator is illuminated and the DUAL switch is pressed, the driver-side setting
temperature are applied to both sides.

AV-1
AUDIO VISUAL, NAVIGATION & TELEPHONE SYS-
TEM
K ELECTRICAL
CONTENTS
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SECTION AV
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AV
Revision: 2004 November 2004 FX35/FX45
AUDIO VISUAL, NAVIGATION & TELEPHONE SYSTEM
PRECAUTIONS .......................................................... 5
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 5
Wiring Diagrams and Trouble Diagnosis .................. 5
PREPARATION ........................................................... 6
Commercial Service Tools ........................................ 6
AUDIO ......................................................................... 7
System Description .................................................. 7
BASE SYSTEM ..................................................... 7
BOSE SYSTEM .................................................... 7
SPEED SENSITIVE VOLUME SYSTEM .............. 8
Component Parts and Harness Connector Location ..... 9
Schematic -Base System- ...................................... 10
WITH NAVIGATION SYSTEM ............................. 10
WITHOUT NAVIGATION SYSTEM ...................... 11
Wiring Diagram -AUDIO- / Base System ............... 12
Schematic -BOSE System- .................................... 19
WITH NAVIGATION SYSTEM ............................. 19
WITHOUT NAVIGATION SYSTEM ..................... 20
Wiring Diagram -AUDIO- / BOSE System .............. 21
Terminals and Reference Value for Audio Unit ....... 30
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
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 .................................................. 35
MALFUNCTION WITH RADIO, TAPE AND CD
(BASE SYSTEM) ................................................ 35
MALFUNCTION WITH RADIO, TAPE AND CD
(BOSE SYSTEM) ................................................ 36
FOR RADIO ONLY .............................................. 37
FOR CASSETTE PLAYER ONLY ....................... 37
FOR CD ONLY .................................................... 37
Noise Inspection ..................................................... 38TYPE OF NOISE AND POSSIBLE CAUSE ........ 38
Power Supply Circuit Inspection ............................. 39
Audio Steering Wheel Switch Inspection ................ 40
A/C and AV Switch Inspection ................................ 41
BOSE Speaker Amp. Inspection ............................ 42
Vehicle Speed Signal Inspection ............................ 42
Locking CD Auto-changer Mechanism ................... 44
DAMPER LOCK PROCEDURE .......................... 44
Removal and Installation of Audio Unit ................... 44
REMOVAL ........................................................... 44
INSTALLATION ................................................... 44
Disassembly and Assembly for Audio Unit ............. 45
DISASSEMBLY ................................................... 45
ASSEMBLY ......................................................... 45
Removal and Installation for A/C and AV Switch .... 45
REMOVAL ........................................................... 45
INSTALLATION ................................................... 46
Removal and Installation for Front Door Speaker ... 46
REMOVAL ........................................................... 46
INSTALLATION ................................................... 46
Removal and Installation for Rear Door Speaker ... 46
REMOVAL ........................................................... 46
INSTALLATION ................................................... 46
Removal and Installation for Instrument Speaker ... 47
REMOVAL ........................................................... 47
INSTALLATION ................................................... 47
Removal and Installation for Tweeter ..................... 47
REMOVAL ........................................................... 47
INSTALLATION ................................................... 47
Removal and Installation for Woofer (BOSE Sys-
tem) ........................................................................ 47
REMOVAL ........................................................... 47
INSTALLATION ................................................... 47
Removal and Installation for BOSE Speaker Amp. ... 48
REMOVAL ........................................................... 48
INSTALLATION ................................................... 48
AUDIO ANTENNA .................................................... 49
System Description ................................................. 49
Wiring Diagram — M/ANT — ................................. 50
Terminals and Reference Value for Audio Unit ....... 51

AUDIO
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AUDIOPFP:28111
System DescriptionAKS00BMM
BASE 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 and

to display control unit terminal 1 (with navigation system) or display unit terminal 1 (without navigation sys-
tem).
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 and

to display control unit terminal 10 (with navigation system) or display unit terminal 2 (without navigation
system).
Ground is supplied through the case of the audio unit.
Ground is also supplied

to A/C and AV switch terminal 5

to display control unit terminal 3 and 13 (with navigation system)

to display terminal 1 (with navigation system)

to display unit terminal 6 and 15 (without navigation system)

through body ground M35, M45 and M85

to option connector for satellite radio receiver terminal 10

through body ground B210 and B203.
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 pushed to audio switch, it sends audio signal to audio unit.
Then audio signals are supplied

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

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 instrument speaker LH and RH.
When one of audio steering wheel switch is pushed to volume up, seek up, or mode ON, resistance in steering
switch circuit changes depending on which button is pushed.
When one of audio steering wheel switch is pushed to volume down, seek down, or power ON, resistance in
audio steering wheel switch circuit changes depending on which button is pushed.
BOSE 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 woofer terminal 1

to A/C and AV switch terminal 1 and

to display control unit terminal 1 (with navigation system) or display unit terminal 1 (without navigation sys-
tem),

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

AV-8
AUDIO
Revision: 2004 November 2004 FX35/FX45

to A/C and AV switch terminal 2 and

to display control unit terminal 10 (with navigation system) or display unit terminal 2 (without navigation
system).
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 option connector for satellite radio receiver terminal 10

through body ground B203 and B210,

to A/C and AV switch terminal 5

to display control unit terminal 3 and 13 (with navigation system)

to display terminal 1 (with navigation system)

to display unit terminal 6 and 15 (without navigation system)

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 pushed to audio switch, it send audio signal to audio unit.
Then audio signals 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,

to terminals 7 and 8 of woofer.
When one of audio steering wheel switch is pushed to volume up, seek up, or mode ON, resistance in audio
steering wheel switch circuit changes depending on which button is pushed.
When one of audio steering wheel switch is pushed to volume down, seek down, or power ON, resistance in
audio steering wheel switch circuit changes depending on which button is pushed.
SPEED SENSITIVE VOLUME SYSTEM
Volume level of this system gone up and down automatically in proportion to the vehicle speed. And the con-
trol level can be selected by the customer.

AV-30
AUDIO
Revision: 2004 November 2004 FX35/FX45
Terminals and Reference Value for Audio UnitAKS00BMN
Terminal
(Wire color)
ItemSignal
input/
outputCondition
Reference valueExample of symp-
tom
+–Ignition
switchOperation
2 (W)
*1 ,
(L)*21 (B)*1 ,
(B/W)*2
Audio sound
signal front
LHOutput ON
Receive audio
signalNo sound from
front door speaker
LH and instru-
ment speaker LH.
4 (G)*
1 ,
(G/B)*23 (R)*1 ,
(B/R)*2
Audio sound
signal front
RHOutput ONNo sound from
front door speaker
RH and instrument
speaker RH.
5 (R/W) GroundAntenna
signalOutput ON – Approx. 12VAntenna amp.
does not work
properly.
6 (W/L) GroundBattery
power sup-
plyInput OFF – Battery voltageSystem will not
work properly.
9*
1– Shield – ON – Approx.0V –
10
(LG/R)GroundACC power
supplyInput ACC – Battery voltageSystem does not
work properly.
11 *
1– Shield – ON – Approx.0V –
12*
3
(G/W)GroundAmp ON sig-
nalOutput ON – Approx. 12VBOSE speaker
amp. does not
work properly.
14
(BR)*
1 ,
(L/W)*2
13 (Y)*1 ,
(B/Y)*2
Audio sound
signal rear
LHOutput ON
Receive audio
signalNo sound from
rear door speaker
LH.
16 (L)*
1 ,
(R/G)*215 (P)*1 ,
(L/B)*2
Audio sound
signal rear
RHOutput ONNo sound from
rear door speaker
RH.
21
(B/Y)GroundAudio TX
signal (AUD
- DCU) Output ONOperate audio
volumeAudio does not
operate properly.
22
(W/L)GroundVehicle
speed signal
(2 pulse)Input ONWhen vehicle
speed is
approx. 40
km/h (25MPH)Speed sensitive
volume system
dose not work
properly.
23 (LG) GroundAudio RX
signal (DCU
- AUD)Input ONOperate audio
volumeAudio does not
operate properly.
25 – Shield – ON – Approx.0V –
SKIA0177E
SKIA0177E
SKIA4402E
ELF1080D
SKIA4403E

AUDIO
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*1: BOSE system and with VQ engine or with sunroof, ICC system, Navigation system or DVD player
*2: Except for above
*3: BOSE system only
Terminals and Reference Value for BOSE Speaker Amp.AKS00BMO
Terminal
(Wire color)
ItemSignal
input/
outputCondition
Reference valueExample of
symptom
+–Igni-
tion
switchOperation
1 (R) GroundBattery power
supply Input OFF – Battery voltageSystem does not
work properly.
9 (LG) 10 (B/Y)Audio sound
signal rear LHOutput ON
Receive audio
signalNo sound from
rear door speaker
LH.
11 (OR) 12 (B/P)Audio sound
signal rear RHOutput ONNo sound from
rear door speaker
RH.
13 (L) 14 (B/W)Audio sound
signal front LHOutput ON
Receive audio
signalNo sound from
front door
speaker LH and
instrument
speaker LH.
15 (BR) 16 (B/R)Audio sound
signal front RHOutput ONNo sound from
front door
speaker RH and
instrument
speaker RH.
17 (B) GroundGround
(Power)– ON – Approx. 0VBOSE speaker
amp. dose not
work properly.
18
(R/L)2 (B)Audio sound
signal (Instru-
ment CEN-
TER)Output ONReceive audio
signalNo sound from
instrument
speaker CEN-
TER.
19 (W) 3 (B) Woofer signal Output ONReceive audio
signalNo sound from
woofer.
20 (G) 4 (G/W) Tweeter signal Output ONReceive audio
signalNo sound from
tweeter.
22 (P) GroundAmp ON sig-
nal (woofer)Output ON – Approx. 12VWoofer does not
work properly.
SKIA0177E
SKIA0177E
SKIA0177E
SKIA0177E
SKIA0177E

AV-32
AUDIO
Revision: 2004 November 2004 FX35/FX45
24 (L) 23 (B/W)Audio sound
signal rear RHInput ON
Receive audio
signalNo sound from
rear door speaker
RH.
26 (B/R) 25 (BR)Audio sound
signal rear LHInput ONNo sound from
rear door speaker
LH.
28 (LG) 27 (PU)Audio sound
signal front RHInput ON
Receive audio
signalNo sound from
front door
speaker RH or
instrument
speaker RH.
30 (W) 29 (B)Audio sound
signal front LHInput ONNo sound from
front door
speaker LH or
instrument
speaker LH.
31 (P) Ground Control signal Input ON – Approx. 12VBOSE speaker
amp. does not
work properly. Terminal
(Wire color)
ItemSignal
input/
outputCondition
Reference valueExample of
symptom
+–Igni-
tion
switchOperation
SKIA0177E
SKIA0177E