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Page 76 of 4449

INFINITI FX35 2004 Service Manual REMOVAL AND INSTALLATION
ACS-67
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ACS
Revision: 2004 November 2004 FX35/FX45
REMOVAL AND INSTALLATIONPFP:00000
ICC UnitAKS00704
ICC SensorAKS00705
CAUTION:
Adjust the laser

Page 113 of 4449

INFINITI FX35 2004 Service Manual AT-36
A/T CONTROL SYSTEM
Revision: 2004 November 2004 FX35/FX45
Engine Brake ControlACS002LL
The forward one-way clutch transmits the drive force from the engine to the rear wheels. But the reverse
d

AT-36
A/T CONTROL SYSTEM
Revision: 2004 November 2004 FX35/FX45
Engine Brake ControlACS002LL
The forward one-way clutch transmits the drive force from the engine to the rear wheels. But the reverse
drive from the rear wheels is not transmitted to the engine because the one-way clutch is idling.
Therefore, the low coast brake solenoid is operated to prevent the forward one-way clutch from idling and
the engine brake is operated in the same manner as conventionally.
The operation of the low coast brake solenoid switches the low coast brake switching valve and controls
the coupling and releasing of the low coast brake.
The low coast brake reducing valve controls the low coast brake coupling force.
Control ValveACS002LM
FUNCTION OF CONTROL VALVE
SCIA1520E
Name Function
Torque converter regulator valveIn order to prevent the pressure supplied to the torque converter from being excessive,
the line pressure is adjusted to the optimum pressure (torque converter operating pres-
sure).
Pressure regulator valve
Pressure regulator plug
Pressure regulator sleeveAdjusts the oil discharged from the oil pump to the optimum pressure (line pressure) for
the driving state.
Front brake control valveWhen the front brake is coupled, adjusts the line pressure to the optimum pressure
(front brake pressure) and supplies it to the front brake. (In 1st, 2nd, 3rd, and 5th gears,
adjusts the clutch pressure.)
Accumulator control valveAdjusts the pressure (accumulator control pressure) acting on the accumulator piston
and low coast reducing valve to the pressure appropriate to the driving state.
Pilot valve AAdjusts the line pressure and produces the constant pressure (pilot pressure) required
for line pressure control, shift change control, and lock-up control.
Pilot valve BAdjusts the line pressure and produces the constant pressure (pilot pressure) required
for shift change control.
Low coast brake switching valve During engine braking, supplies the line pressure to the low coast brake reducing valve.
Low coast brake reducing valveWhen the low coast brake is coupled, adjusts the line pressure to the optimum pressure
(low coast brake pressure) and supplies it to the low coast brake.
N-R accumulator Produces the stabilizing pressure for when N-R is selected.
Direct clutch piston switching valve Operates in 4th gear and switches the direct clutch coupling capacity.
High and low reverse clutch control valveWhen the high and low reverse clutch is coupled, adjusts the line pressure to the opti-
mum pressure (high and low reverse clutch pressure) and supplies it to the high and low
reverse clutch. (In 1st, 3rd, 4th and 5th gears, adjusts the clutch pressure.)

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INFINITI FX35 2004 Service Manual AT-42
TROUBLE DIAGNOSIS
Revision: 2004 November 2004 FX35/FX45
TROUBLE DIAGNOSISPFP:00004
DTC Inspection Priority ChartACS007A2
If some DTCs are displayed at the same time, perform inspections one by

AT-42
TROUBLE DIAGNOSIS
Revision: 2004 November 2004 FX35/FX45
TROUBLE DIAGNOSISPFP:00004
DTC Inspection Priority ChartACS007A2
If some DTCs are displayed at the same time, perform inspections one by one based on the following priority
chart.
NOTE:
If DTC “U1000” is displayed with other DTC, first perform the trouble diagnosis for “DTC U1000 CAN
COMMUNICATION LINE”. Refer to AT- 1 0 5
.
Fail-SafeACS007A3
The TCM has an electrical fail-safe mode. This mode makes it possible to operate even if there is a an mal-
function in a main electronic control input/output signal circuit.
In fail-safe mode, even if the selector lever is “D” or “M” mode, the transmission is fixed in 2nd or 4th (depend-
ing on the breakdown position), so the customer should feel “slipping” or “poor acceleration”. When fail-safe
mode is triggered, when the ignition switch is switched “ON”, the A/T CHECK indicator lamp flashes for about
8 seconds. (Refer to AT- 1 0 3 , "
TCM SELF-DIAGNOSTIC PROCEDURE (NO TOOLS)" ).
Even when the electronic circuits are normal, under special conditions (for example, when slamming on the
brake with the wheels spinning drastically and stopping the tire rotation), the transmission can go into fail-safe
mode. If this happens, switch “OFF” the ignition switch for 10 seconds, then switch it “ON” again to return to
the normal shift pattern. Also, the A/T CHECK indicator lamp flashes for about 8 seconds once, then is
cleared. Therefore, the customer's vehicle has returned to normal, so handle according to the “diagnostics
flow” (Refer to AT- 4 5
).
FAIL-SAFE FUNCTION
If any malfunction occurs in a sensor or solenoid, this function controls the A/T to make driving possible.
Vehicle Speed Sensor A/T (Revolution Sensor)
Signals are input from two systems - from vehicle speed sensor A/T (revolution sensor) installed on the
transmission and from combination meter so normal driving is possible even if there is a malfunction in
one of the systems. And if vehicle speed sensor A/T (revolution sensor) has unusual cases, 5th gear and
manual mode are prohibited.
Accelerator Pedal Position Sensor
If there is a malfunction in one of the systems, the accelerator opening angle is controlled by ECM accord-
ing to a pre-determined accelerator angle to make driving possible. And if there are malfunctions in tow
systems, the engine speed is fixed by ECM to a pre-determined engine speed to make driving possible.
Throttle Position Sensor
If there is a malfunction in one of the systems, the accelerator opening angle is controlled by ECM accord-
ing to a pre-determined accelerator angle to make driving possible. And if there are malfunctions in tow
systems, the accelerator opening angle is controlled by the idle signal sent from the ECM which is based
on input indicating either idle condition or off-idle condition (pre-determined accelerator opening) in order
to make driving possible.
PNP Switch
In the unlikely event that a malfunction signal enters the TCM, the position indicator is switched “OFF”, the
starter relay is switched “OFF” (starter starting is disabled), the back-up lamp relay switched “OFF” (back-
up lamp is OFF) and the position is fixed to the “D” range to make driving possible.
Starter Relay
The starter relay is switched “OFF”. (Starter starting is disabled.)
Priority Detected items (DTC)
1 U1000 CAN communication line
2 Except above

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INFINITI FX35 2004 Service Manual AV-1
AUDIO VISUAL, NAVIGATION & TELEPHONE SYS-
TEM
K ELECTRICAL
CONTENTS
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A
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AV
Revision: 2004 November 2004 FX35/FX45
AUDIO VISUAL, NAVIGATION & TELEPHONE SYSTEM
PRECA

AV-1
AUDIO VISUAL, NAVIGATION & TELEPHONE SYS-
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CONTENTS
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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

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INFINITI FX35 2004 Service Manual AV-2Revision: 2004 November 2004 FX35/FX45Antenna Amp. Inspection ....................................... 51
Location of Antenna ................................................ 52
Window Antenna Rep

AV-2Revision: 2004 November 2004 FX35/FX45Antenna Amp. Inspection ....................................... 51
Location of Antenna ................................................ 52
Window Antenna Repair ......................................... 52
CHECK ELEMENT .............................................. 52
Removal and Installation of Roof Antenna ............. 54
REMOVAL ........................................................... 54
INSTALLATION .................................................... 54
INTEGRATED DISPLAY SYSTEM ............................ 55
System Description ................................................. 55
A/C AND AV SWITCH SYSTEM .......................... 55
PRECAUTION OF LCD MONITOR ..................... 55
POWER SUPPLY AND GROUND ....................... 55
DRIVE COMPUTER ............................................ 56
E/M SWITCH ....................................................... 57
SETTING SCREEN ............................................. 58
WARNING INDICATIONS ................................... 59
AV COMMUNICATION LINE ............................... 59
CAN Communication System Description .............. 60
CAN Communication Unit ....................................... 61
Component Parts and Harness Connector Location ... 61
Schematic ............................................................... 62
Wiring Diagram — INF/D — ................................... 63
Schematic ............................................................... 68
Wiring Diagram — COMM — ................................. 69
Terminals and Reference Value for Display Unit .... 72
Terminals and Reference Value for A/C and AV
Switch ..................................................................... 73
On Board Self-Diagnosis Function ......................... 74
DESCRIPTION .................................................... 74
DIAGNOSIS ITEM ............................................... 74
Self-Diagnosis Mode .............................................. 74
OPERATION PROCEDURES ............................. 74
NETWORK CHECK ............................................. 75
PARTS CHECK ................................................... 76
HVAC DETAIL SCREEN ...................................... 76
VERSION CHECK ............................................... 76
CAN DIAG MNTR (CAN DIAG MONITOR) ......... 76
A/C and AV Switch Self-Diagnosis Function ........... 77
STARTING THE SELF-DIAGNOSIS MODE ........ 77
DIAGNOSIS FUNCTION ..................................... 77
EXITING THE SELF-DIAGNOSIS MODE ........... 77
Trouble Diagnosis Chart by Symptom .................... 78
Power Supply and Ground Circuit Check for Display
Unit ......................................................................... 79
Power Supply and Ground Circuit Check for A/C and
AV Switch ................................................................ 80
Vehicle Speed Signal Inspection ............................ 80
Illumination Signal Inspection ................................. 81
Ignition Signal Inspection ........................................ 82
Audio Communication Line Inspection ................... 82
A/C and AV Switch Does Not Operate .................... 84
CAN Communication Line Inspection ..................... 85
Audio Steering Wheel Switch Inspection ................ 85
Removal and Installation of Display ........................ 87
REMOVAL ........................................................... 87
INSTALLATION .................................................... 87
Removal and Installation of A/C and AV Switch ..... 87
NAVIGATION SYSTEM ............................................. 88
System Description ................................................. 88TRAVEL DISTANCE ............................................ 88
TRAVEL DIRECTION .......................................... 88
MAP-MATCHING ................................................. 88
GPS (GLOBAL POSITIONING SYSTEM) .......... 89
COMPONENT DESCRIPTION ............................ 90
BIRDVIEW™ ........................................................ 90
MAP DISPLAY ..................................................... 91
FUNCTION OF CENTER SWITCH ..................... 92
“VIEW” MODE ...................................................... 98
“HEADING” MODE .............................................. 99
“NEARBY DISPLAY ICONS” MODE .................... 99
“SAVE CURRENT LOCATION” MODE ................ 99
“ADJUST CURRENT LOCATION” MODE ........... 99
“AUTO RE-ROUTE” MODE ...............................100
“AVOID AREA SETTING” MODE ......................100
“CLEAR MEMORY” MODE ................................100
“EDIT ADDRESS BOOK” MODE .......................101
“GPS INFORMATION” MODE ...........................101
“QUICK STOP CUSTOMER SETTING” MODE .101
“SET AVERAGE SPEED” MODE ......................101
“TRACKING” MODE ..........................................102
GUIDANCE VOLUME ........................................102
DISPLAY WITH PUSHED “TRIP” BUTTON .......102
TRIP 1 OR TRIP 2 .............................................103
FUEL ECONOMY ..............................................103
MAINTENANCE .................................................103
ENGINE OIL OR TIRE ROTATION ....................103
TIRE PRESSURE ..............................................104
WARNING INDICATIONS ..................................104
CAN Communication System Description ............105
CAN Communication Unit .....................................105
Component Parts Location and Harness Connector
Location ................................................................105
Schematic—NAVI— ..............................................106
Wiring Diagram —NAVI— .....................................107
Schematic — COMM — ........................................115
Wiring Diagram — COMM — ................................116
Terminals and Reference Value for NAVI Control
Unit ........................................................................121
Terminals and Reference Value for Display Control
Unit ........................................................................123
Terminals and Reference Value for Display ..........127
Terminals and Reference Value for A/C and AV
Switch ...................................................................129
On Board Self-Diagnosis Function ........................130
DESCRIPTION ..................................................130
DIAGNOSIS ITEM .............................................130
Self-Diagnosis Mode (DCU) ..................................131
OPERATION PROCEDURE ..............................131
SELF–DIAGNOSIS RESULT .............................133
Self-Diagnosis Mode (NAVI) .................................133
OPERATION PROCEDURE ..............................133
SELF–DIAGNOSIS RESULT .............................135
Confirmation/Adjustment Mode .............................136
OPERATION PROCEDURE ..............................136
DISPLAY DIAGNOSIS .......................................136
VEHICLE SIGNALS ...........................................137
AUTO CLIMATE CONTROL ..............................137
NAVIGATION .....................................................138

Page 598 of 4449

INFINITI FX35 2004 Service Manual AUDIO
AV-7
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Revision: 2004 November 2004 FX35/FX45
AUDIOPFP:28111
System DescriptionAKS00BMM
BASE SYSTEM
Refer to Owners Manual for audio system operating instructions.
Power

AUDIO
AV-7
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Revision: 2004 November 2004 FX35/FX45
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

Page 599 of 4449

INFINITI FX35 2004 Service Manual 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
sys

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.

Page 624 of 4449

INFINITI FX35 2004 Service Manual 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
V

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