air conditioner INFINITI FX35 2004 User Guide

AIR CONDITIONER CONTROL
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Revision: 2004 November 2004 FX35/FX45
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.

ATC-36
AIR CONDITIONER CONTROL
Revision: 2004 November 2004 FX35/FX45
Fail-safe FunctionAJS0014E

If a communication error exists between unified meter and A/C amp. and A/C and AV switch for 30 sec-
onds or longer, air conditioner is controlled under following conditions:
–Compressor: ON
–Air outlet: AUTO
–Air inlet: FRE (Fresh)
–Blower fan speed: AUTO
–Set temperature: Setting before communication error occurs

AIR CONDITIONER CONTROL
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Revision: 2004 November 2004 FX35/FX45
Discharge Air FlowAJS0014F
RJIA1960E

ATC-38
AIR CONDITIONER CONTROL
Revision: 2004 November 2004 FX35/FX45
System DescriptionAJS0014G
SWITCHES AND THEIR CONTROL FUNCTION
RJIA1961E
RJIA1962E

AIR CONDITIONER CONTROL
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Revision: 2004 November 2004 FX35/FX45
CAN Communication System DescriptionAJS0014H
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CAN communication, control units are connected with 2
communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only. For details, refer to LAN-6,
"CAN Communication Unit" .

TROUBLE DIAGNOSIS
ATC-41
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DATA MONITOR
Operation Procedure
1. Touch “AIR CONDITIONER” on “SELECT TEST ITEM” screen.
2. Touch “DATA MONITOR” on “SELECT DIAG MODE” screen.
3. Touch either “ALL SIGNALS” or “SELECTION FROM MENU” on
“DATA MONITOR” screen.
4. When “SELECTION FROM MENU” is selected, touch items to
be monitored. When “ALL SIGNALS” is selected, all the items
will be monitored.
5. Touch “START”.
6. Touch “RECORD” while monitoring, then the status of the moni-
tored item can be recorded. To stop recording, touch “STOP”.
Display Item List
SJIA0303E
SJIA0304E
All signals Monitors all the items.
Selection from menu Selects and monitors the individual item selected.
R J I A 1111 E
Monitor item name “operation or
unit”Contents
IGN ON SW “ON/OFF” Displays “IGN Position (ON)/OFF, ACC Position (OFF)” status as judged from ignition switch signal.
FAN ON SIG “ON/OFF” Displays “FAN (ON)/FAN (OFF)” status as judged from blower fan motor switch signal.
AIR COND SW “ON/OFF” Displays “COMP (ON)/COMP (OFF)” status as judged from air conditioner switch signal.

AV-74
INTEGRATED DISPLAY SYSTEM
Revision: 2004 November 2004 FX35/FX45
On Board Self-Diagnosis FunctionAKS00BOF
DESCRIPTION

Diagnosis function consists of the self-diagnosis mode performed automatically.

Self-diagnosis mode checks for connections between the units constituting this system, analyzes each
individual unit at the same time, and displays the results on the LCD screen.
DIAGNOSIS ITEM
Self-Diagnosis ModeAKS00BOG
OPERATION PROCEDURES
1. Start the engine.
2. Turn the audio system off.
3. While pressing the “MUTE/II ” switch, turn the volume control
dial clockwise or counterclockwise for 30 clicks or more. (When
the self-diagnosis mode is started, a short beep will be heard.)
4. Display unit connection check screen.
13 (G/W) GroundRemote con-
troller BInput ONPress POWER
switch.Approx. 0V
Audio steering
wheel switches
do not function. Press SEEK
DOWN switch.Approx. 1.7V
Press VOL DOWN
switch.Approx. 3.3V
Except for above Approx. 5V
14 (B/Y) -Remote con-
troller ground-- - -Audio steering
wheel switches
do not function. Terminal No.
(Wire color)
ItemSignal
input/
outputCondition
VoltageExample of
symptom
+–Ignition
switchOperation
Mode Item Description Reference page
Self-diagnosisNETWORK CHECKCheck network between control unit and switch connected
from display unit via communication line.AV-75, "
NETWORK CHECK"
PARTS CHECK
Perform diagnosis and setting of display unit.

Perform self-diagnosis for auto air conditioner system.AV- 7 6 , "PARTS CHECK"
VERSION CHECK Displays version of each unit.AV- 7 6 , "VERSION CHECK"
CAN DIAG MNTR Display unit displays CAN communication status.AV- 7 6 , "CAN DIAG MNTR
(CAN DIAG MONITOR)"
SKIA4971E

AV-76
INTEGRATED DISPLAY SYSTEM
Revision: 2004 November 2004 FX35/FX45
PARTS CHECK

Selecting PARTS CHECK on self-diagnosis screen, display
selection screen.

Select DISPLAY, indicate DISPLAY DETAIL screen. Display
diagnosis and setting can be performed.

Select HVAC, Indicate HVAC DETAIL screen. Auto air condi-
tioner system self-diagnosis can be performed.
DISPLAY DETAIL SCREEN
NOTE:
Except an audio screen.
HVAC DETAIL SCREEN
Press the joystick, start auto air conditioner system self-diagnosis.
Refer to AT C - 5 3 , "
Self-diagnosis Function" .
VERSION CHECK
Check ID and version of display, A/C and AV switch, audio, IVCS, changer and Satellite Radio.
CAN DIAG MNTR (CAN DIAG MONITOR)
Display CAN communication status.
SKIA5924E
Items Description
FULL BLINK All display unit segments turn ON.
BLANK–ADJAdjust the display time-out for 5 to 15 seconds. (Default is
10 seconds.)
Note
WARNING Select warning indication ON/OFF. (Default is ON.)
SKIA5925E
SKIA5926E
Items shown Contents
CANCOMM OK/NG
CAN1 OK/UNKWN
CAN2 OK/UNKWN
CAN3 OK/UNKWN
CAN4 OK/UNKWN
CAN5 OK/UNKWN
CAN6 OK/UNKWN
CAN7 OK/UNKWN
CAN8 OK/UNKWN
CAN9 OK/UNKWN
SKIA5927E

AV-78
INTEGRATED DISPLAY SYSTEM
Revision: 2004 November 2004 FX35/FX45
Trouble Diagnosis Chart by SymptomAKS00BOI
Symptom Check item
No screen is shown.

Display unit power supply and ground circuit. Refer to AV- 7 9 , "Power Supply
and Ground Circuit Check for Display Unit" .

Display unit
Screen does not switch to nighttime mode after the
lighting switch is turned ON.

Illumination signal. Refer to AV-81, "Illumination Signal Inspection" .

Display unit
TRIP and FUEL ECON screen do not appear.

Ignition signal. Refer to AV- 8 2 , "Ignition Signal Inspection" .

Display unit

Trip odometer (DIST) is not added up.

Average vehicle speed (AVG) is not displayed.

Vehicle speed signal. Refer to AV- 8 0 , "Vehicle Speed Signal Inspection" .

Display unit
Average fuel consumption (AVG) is not displayed.

Vehicle speed signal. Refer to AV- 8 0 , "Vehicle Speed Signal Inspection" .

CAN communication line. Refer to AV- 8 5 , "CAN Communication Line Inspec-
tion" .

Display unit
Distance to empty (DTE) is not displayed.

Check if speedometer operates. If it does not operate, go to DI-17, "Vehicle
Speed Signal Inspection" .

Check if fuel gauge operates. If it does not operate, go to DI-20, "Fuel Level
Sensor Signal Inspection 1" .

CAN communication line. Refer to DI-22, "Communication Line Inspection" .

Display unit
Tire pressure is not displayed.

Ignition signal. Refer to AV- 8 2 , "Ignition Signal Inspection" .

Low tire pressure warning control unit. Refer to WT-17, "Self-Diagnosis" .

CAN communication line. Refer to DI-22, "Communication Line Inspection" .

Display unit
Door warning screen does not appear.

Ignition signal. Refer to AV- 8 2 , "Ignition Signal Inspection" .

Vehicle speed signal. Refer to AV- 8 0 , "Vehicle Speed Signal Inspection" .

CAN communication line. Refer to AV- 8 5 , "CAN Communication Line Inspec-
tion" .

Display unit
A/C and AV switch and all switch operation are not
possible.
(Do not start self-diagnosis.)Refer to AV-84, "
A/C and AV Switch Does Not Operate" .
Air conditioner operation is not possible.

A/C and AV switch. Refer to AV-41, "A/C and AV Switch Inspection" .

CAN communication line. Refer to AV- 8 5 , "CAN Communication Line Inspec-
tion" .

NAVIGATION SYSTEM
AV-137
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Revision: 2004 November 2004 FX35/FX45

When RGB signal error occurred in the RGB system, tone of the color bar will change as follows.

When the color of the screen looks unusual, refer to AV- 1 6 2 , "Color of RGB Image is Not Proper (All
screens Looks Bluish)" ,AV- 1 6 3 , "Color of RGB Image is Not Proper (All Screens Looks Reddish)" and
AV- 1 6 4 , "
Color of RGB Image is Not Proper (All Screens Looks Yellowish)" .
VEHICLE SIGNALS

A comparison check can be made of each actual vehicle signal
and the signals recognized by the system.
CAUTION:
In case of confirming light signal, set D/N mode to ON/OFF
of lighting switch (normal setting).

OFF: D (Day mode)

ON: N (Night mode)
Unless above setting, light signal (ON/OFF) may not be
accurately displayed.

If vehicle speed is NG, refer to AV- 1 5 0 , "Vehicle Speed Signal Check for Display Control Unit" .

If light is NG, refer to AV- 1 5 2 , "Illumination Signal Check for Display Control Unit" .

If IGN is NG, refer to AV- 1 5 2 , "Ignition Signal Check for Display Control Unit" .

If reverse is NG, refer to AV- 1 5 3 , "Reverse Signal Check for Display Control Unit" .
AUTO CLIMATE CONTROL

Refer to ATC Automatic Air Conditioner AT C - 5 3 , "Self-diagnosis Function" for details. R (red) signal error : Screen looks bluish
G (green) signal error : Screen looks reddish
B (blue) signal error : Screen looks yellowish
SKIA5628E
Diagnosis item Display Condition Remarks
Vehicle speedON Vehicle speed > 0 MPH (0 km/h)
Changes in indication may be delayed by
approx. 1.5 seconds. This is normal. OFF Vehicle speed = 0 MPH (0 km/h)
– Ignition switch in ACC position
IGNON Ignition switch ON
–
OFF Ignition switch ACC
ReverseON Selector lever in R position
Changes in indication may be delayed by
approx. 1.5 seconds. This is normal. OFF Selector lever except R position
– Ignition switch in ACC position
LightON Lighting switch ON
–
OFF Lighting switch OFF