ECO mode INFINITI FX35 2004 Repair Manual

TROUBLE DIAGNOSIS
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Revision: 2004 November 2004 FX35/FX45
AUXILIARY MECHANISM: TEMPERATURE SETTING TRIMMER
The trimmer compensates for differences in range of ±3°C (±6°F) between temperature setting (displayed dig-
itally) and temperature felt by driver.
Operating procedures for this trimmer are as follows:
1. Begin Self-diagnosis STEP-5 mode. Refer to AT C - 5 3 , "
Self-diagnosis Function" .
2. Press (fan) UP switch to set system in auxiliary mode.
3. Display shows 61 in auxiliary mechanism. It takes approximately 3 seconds.
4. Press temperature switch (driver side) as desired. Temperature will change at a rate of 0.5°C (1.0°F) each
time a switch is pressed.
CAUTION:
A decimal point is not indicated when the display shows “°C”.
When battery cable is disconnected, trimmer operation is canceled. Temperature set becomes that of initial
condition, i.e. 0°C (0°F).
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ATC-60
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Revision: 2004 November 2004 FX35/FX45
AUXILIARY MECHANISM: FOOT POSITION SETTING TRIMMER
Wind distribution ratio in FOOT mode can be set.
Operating procedures for this trimmer are as follows:
1. Begin Self-diagnosis STEP-5 mode. Refer to AT C - 5 3 , "
Self-diagnosis Function" .
2. Press (fan) UP switch to set system in auxiliary mode.
3. Display shows 61 in auxiliary mechanism. It takes approximately 3 seconds.
4. Press the mode switch as desired.
AUXILIARY MECHANISM: INLET PORT MEMORY FUNCTION
When ignition key is turned from OFF to ON, inlet port can be set to AUTO or manual.
Operating procedures for this trimmer are as follows:
1. Begin Self-diagnosis STEP-5 mode. Refer to AT C - 5 3 , "
Self-diagnosis Function" .
2. Press (fan) UP switch to set system in auxiliary mode.
3. Display shows 61 in auxiliary mechanism. It takes approximately 3 seconds.
4. Press the recirculation (REC) and fresh (FRE) switch as desired.
RJIA1971E
SwitchLED status of
REC/FRE
switchSetting status Setting changeover method
RECON Manual REC status is memorized. (Initial setting)
REC SW: ON
OFF AUTO control
FREON Manual FRE status is memorized.
FRE SW: ON
OFF AUTO control (Initial setting)

ATC-68
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Revision: 2004 November 2004 FX35/FX45
6. CHECK MOTOR OPERATION
1. Turn ignition switch OFF.
2. Disconnect each door motor connector.
3. Reconnect each door motor connector.
4. Turn ignition switch ON.
5. Confirm each door motor operation.
OK or NG
OK >> (Return to operate normally.)

Poor contact in motor connector.
NG >> (Does not operate normally.)

GO TO 7.
7. CHECK MODE DOOR MOTOR OPERATION
1. Turn ignition switch OFF.
2. Disconnect mode door motor and air mix door motor (driver side, passenger side) connector.
3. Reconnect mode door motor connector.
4. Turn ignition switch ON.
5. Confirm the mode door motor operation.
OK or NG
OK >> (Mode door motor operates normally.)

GO TO 8.
NG >> (Mode door motor does not operate normally.)

Repair mode door motor.
8. CHECK AIR MIX DOOR MOTOR OPERATION
1. Turn ignition switch OFF.
2. Disconnect mode door motor connector.
3. Reconnect air mix door motor connector (driver side, passenger side).
4. Turn ignition switch ON.
5. Confirm the air mix door motor operation.
OK or NG
OK >> (Air mix door motor operates normally.)

GO TO 9.
NG >> (Air mix door motor does not operate normally.)

GO TO 10.
9. CHECK INTAKE DOOR MOTOR OPERATION
1. Turn ignition switch OFF.
2. Disconnect air mix door motor connector (driver side, passenger side).
3. Reconnect intake door motor connector.
4. Turn ignition switch ON.
5. Confirm the intake door motor operation.
OK or NG
OK >> (Intake door motor operates normally.)

Repair unified meter and A/C amp.
NG >> (Intake door motor does not operate normally.)

Repair intake door motor.

TROUBLE DIAGNOSIS
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Revision: 2004 November 2004 FX35/FX45
Starting Fan Speed Control
Start Up from COLD SOAK Condition (Automatic mode)
In a cold start up condition where the engine coolant temperature is below 56°C (133°F), the blower will not
operate for a short period of time (up to 150 seconds). The exact start delay time varies depending on the
ambient and engine coolant temperature.
In the most extreme case (very low ambient) the blower starting delay will be 150 seconds as described
above. After this delay, the blower will operate at low speed until the engine coolant temperature rises above
56°C (133°F), at which time the blower speed will increase to the objective speed.
Start Up from Usual or HOT SOAK Condition (Automatic mode)
The blower will begin operation momentarily after the AUTO switch is pushed. The blower speed will gradually
rise to the objective speed over a time period of 3 seconds or less (actual time depends on the objective
blower speed).
Blower Speed Compensation
Sunload
When the in-vehicle temperature and the set temperature are very close, the blower will be operating at low
speed. The low speed will vary depending on the sunload. During conditions of low or no sunload, the blower
low speed is usual low speed (duty ratio 25%). During high sunload conditions, the unified meter and A/C
amp. causes the blower speed to increase (duty ratio 49%).
Fan Speed Control Specification
COMPONENT DESCRIPTION
Brush-less Motor
The blower motor utilizes a brush-less motor with a rotating magnet.
Quietness is improved over previous motors where the brush was
the point of contact and the coil rotated.
DIAGNOSTIC PROCEDURE FOR BLOWER MOTOR
SYMPTOM: Blower motor operation is malfunctioning under starting
fan speed control.
RJIA1996E
ZHA152H
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REFRIGERANT LINES
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Revision: 2004 November 2004 FX35/FX45
CHECKING PROCEDURE
To prevent inaccurate or false readings, make sure there is no refrigerant vapor, shop chemicals, or cigarette
smoke in the vicinity of the vehicle. Perform the leak test in calm area (low air/wind movement) so that the
leaking refrigerant is not dispersed.
1. Turn engine OFF.
2. Connect a suitable A/C manifold gauge set to the A/C service ports.
3. Check if the A/C refrigerant pressure is at least 345 kPa (3.52 kg/cm
2 , 50 psi) above 16°C (61°F). If less
than specification, recover/evacuate and recharge the system with the specified amount of refrigerant.
NOTE:
At temperatures below 16°C (61°F), leaks may not be detected since the system may not reach 345 kPa
(3.52 kg/cm
2 , 50 psi).
4. Perform the leak test from the high-pressure side (compressor discharge a to evaporator inlet h) to the
low-pressure side [evaporator drain hose i to shaft seal o (VK45DE) or n (VQ35DE)]. Refer to ATC-139,
"Components" . Perform a leak check for the following areas carefully. Clean the component to be
checked and move the leak detected probe completely around the connection/component.
Compressor
Check the fitting of high- and low-pressure hoses, relief valve and shaft seal.
Liquid tank
Check the refrigerant connection.
Service valves
Check all around the service valves. Ensure service valve caps are secured on the service valves (to pre-
vent leaks).
NOTE:
After removing A/C manifold gauge set from service valves, wipe any residue from valves to prevent any
false readings by leak detector.
Cooling unit (Evaporator)
With engine OFF, turn blower fan on “High” for at least 15 seconds to dissipate any refrigerant trace in the
cooling unit. Wait a minimum of 10 minutes accumulation time (refer to the manufacturer′s recommended
procedure for actual wait time) before inserting the leak detector probe into the drain hose.
Keep the probe inserted for at least 10 seconds. Use caution not to contaminate the probe tip with water
or dirt that may be in the drain hose.
5. If a leak detector detects a leak, verify at least once by blowing compressed air into area of suspected
leak, then repeat check as outlined above.
6. Do not stop when one leak is found. Continue to check for additional leaks at all system components.
If no leaks are found, perform steps 7-10.
7. Start engine.
8. Set the heater A/C control as follows;
a. A/C switch: ON
b. Face mode
c. Intake position: Recirculation
d. Max cold temperature
e. Fan speed: High
9. Run engine at 1,500 rpm for at least 2 minutes.
10. Turn engine off and perform leak check again following steps 4 through 6 above.

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

AUDIO
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A/C and AV Switch Self-Diagnosis FunctionAKS00BMP
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 “MUTE/II ” and
“PREV ” 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 is pressed.

Continuity of harness between A/C and AV switch and audio steering wheel switch.
EXITING THE SELF-DIAGNOSIS MODE

Turn ignition switch OFF.
Trouble DiagnosisAKS00BMQ
The majority of the audio malfunctions are the result of outside causes (bad CD/cassette, electromagnetic
interference, etc.). Check the symptoms below to diagnose the malfunction.
MALFUNCTION WITH RADIO, TAPE AND CD (BASE 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" to repair malfunctioning parts.
SKIA4972E
Symptom Check item
Inoperative

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

Audio communication line (With out 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-41, "A/C and AV Switch Inspection" .

Audio unit
Audio steering wheel switch dose not operate

Audio steering wheel switch. Refer to AV- 4 0 , "Audio Steering Wheel Switch
Inspection" .

A/C and AV switch. Refer to AV-41, "A/C and AV Switch Inspection" .
One or several speaker does not sound

Front door speaker

Rear door speaker

Audio unit
Poor sound

Audio unit

Speaker
Noisy

Audio unit

Each electrical equipment

INTEGRATED DISPLAY SYSTEM
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Revision: 2004 November 2004 FX35/FX45
MAINT Switch (Maintenance Switch)

When “MAINT” switch is pressed, display vehicle information screen. As vehicle information, it indicates
engine oil, tire rotation and tire pressure.

Pressing “MAINT” switch once cycles display from engine oil→tire rotation→(tire pressure)Note →display
OFF→engine oil.
NOTE:
For models with low tire pressure warning system.
Engine Oil and Tire Rotation

Operating the joystick left/right, replace distance can be set.

When journey distance is the same as replace distance, alert is
displayed. (SERVICE ALERT setting is ON.)

Selected replace distance is 0 - 7,500 miles (0 - 12,000 km) in
increments of 500 mile (800 km).

Press and hold “TRIP RESET or MAINT” switch for 1.5 seconds
or longer, reset present journey distance.

During driving, cannot change settings.
Tire Pressure

Tire pressure signal is received from low tire pressure warning
control unit via CAN communication.

Tire pressure is displayed.

When FLAT TIRE signal is received from low tire pressure warn-
ing control unit, “FLAT TIRE” is displayed.
E/M SWITCH
When “E/M” (English/Metric) switch is pressed, change the unit as followings.
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UnitUS Mile, °F, M P G
Metric km, °C, l/100km

AV-58
INTEGRATED DISPLAY SYSTEM
Revision: 2004 November 2004 FX35/FX45
SETTING SCREEN

Setting of electric status can be changed by A/C and AV switch. The signal is sent to BCM through display
unit to change vehicle electric system setting.

Display unit is communicating with driver seat control unit.

Pressing “SETTING” switch once cycles display from DISPLAY→LANGUAGE→BEEP SET→SERVICE
ALERT→PERSONALIZED SETTINGS MENU→DISPLAY OFF→DISPLAY.

Using the joystick, setting of each item will become possible.
Adjustable Vehicle Status
NOTE:
Setting in factory shipment is ON.
Setting itemsSetting varia-
tionsInitial
settingOperation
DISPLAY ON/OFF ON It switches displayed/Non-displayed of the screen.
LANGUAGEENGLISH/
FRANCAIS– It switches displayed language.
BEEP SET ON/OFF ONIt selects beep sound ON/OFF during switch operation. How-
ever, even if beep is set OFF, beep for NO OPERATION and
for screen interception are not reset.
SERVICE ALERT ON/OFF OFFIt switches displayed/Non-displayed of alert indication.

When the setting is ON, if engine oil or tire rotation will be
replace distance, alert is displayed.

When the setting is OFF, alert is not displayed.
PERSONALIZED
SETTING MENUSLIDE BACK DR
SEAT ON EXITON/OFF
ON
NoteThe driver’s seat automatically moves back and returns to
the original position for exceptional ease of exit and entry.
(Models with automatic drive positioner.)
LIFT STEERING
WHEEL ON EXITON/OFF
ON
NoteThe steering column automatically tilts up and returns to the
original position for exceptional ease of entry and exit. (Mod-
els with automatic drive positioner.)
REMOTE UNLOCK
DOOR LOGICDR-1ST/ALL DR-1STThis key can switch the unlock doors of the 1st unlocking
operation as follows:

Only the driver side door⇔All the doors
HORN CHIRP WITH
REMOTEON/OFF ONThis key changes the horn chirp mode occurring when press-
ing the LOCK button on the keyfob.
LAMPS FLASH
WITH REMOTEALL/LOCK/
UNLOCK/OFFALLThis key changes the hazard indicator flash mode occurring
when pressing the LOCK or UNLOCK button on the keyfob.
AUTO RE-LOCK
TIME5m/1m/OFF 1mThe length of auto door re-lock time can be set. Select the
“Auto Re-Lock timer” key, then move the joystick to adjust the
time.
AUTO HEADLAMP
SENSITIVITYLEVEL 1/2/3/4LEVEL
2Automatic light illumination can be set as desired. Select the
“Auto Headlamp Sensitivity” key, then move the joystick to
the left (lower) or right (higher).
AUTO HEADLAMP
OFF DELAYOFF/30/45/60/
90/120/150/
180 SEC45 SECThis key can control how long it takes the automatic turn off
timer to extinguish the headlamps in “AUTO” position. Select
the “Auto Headlamp Off Delay” key, then move the joystick to
the left or right to adjust the timer.
SPEED SENSING
WIPER INTERVALON/OFF ONThis key turns on and off the driving speed dependent inter-
mittent wiper function.
CONFIRM RESET
SETTINGSYES/NO NOWhen this key is selected and turned on using the “ENTER”
button, all settings mode by PERSONALIZED SETTINGS will
return to the initial conditions.

INTEGRATED DISPLAY SYSTEM
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Revision: 2004 November 2004 FX35/FX45
A/C and AV Switch Self-Diagnosis FunctionAKS00BOH
It can check ON/OFF operation of each switch in the A/C and AV switch and diagnose the input signals to the
steering switch (audio).
STARTING THE SELF-DIAGNOSIS MODE
1. Turn ignition switch from OFF to ACC.
2. Within 10 seconds press and hold the switches “MUTE/II ” and
“PREV ” 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 is pressed.

Continuity of harness between A/C and AV switch and steering switch (audio).
EXITING THE SELF-DIAGNOSIS MODE

Turn ignition switch OFF. Then the self-diagnosis ends.
SKIA4972E