INFINITI M35 2006 Factory Service Manual

ATC-34
AIR CONDITIONER CONTROL
Revision: 2006 January2006 M35/M45
MULTIFUNCTION SWITCH
DISPLAY SCREEN
The operation status of the system is displayed on the screen.
MODE SWITCH (DRIVER SIDE)
Controls the air discharge outlets.
When the DUAL switch indicator is not illuminated, the left and right outlets are switched together.
When the DUAL switch indicator is illuminated, only the driver-side outlet is switched.
MODE SWITCH (PASSENGER SIDE)
When the MODE switch (passenger-side) is pressed, the DUAL switch indicator illuminates, and only the pas-
senger-side outlet is switched.
TEMPERATURE CONTROL SWITCH (POTENTIO TEMPERATURE CONTROL) (DRIVER SIDE)
The set temperature is Increased or decreased with this switch.
TEMPERATURE CONTROL SWITCH (POTENTIO TEMPERATURE CONTROL) (PASSENGER
SIDE)
The set temperature is Increased or decreased with this switch.
When the temperature switch is pressed, the DUAL switch indicator will automatically illuminate.
AUTO SWITCH
The compressor, intake doors, air mix doors, mode 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.
DEFROSTER (DEF) SWITCH
Mode doors are set to the defrost position with this switch. Also, intake doors are set to the outside air position,
and compressor turns ON.
UPPER VENT SWITCH
When UPPER VENT switch is ON, UPPER VENT switch indicator turn ON, and upper ventilator door is
automatically controlled.
When DEFROSTER (DEF) switch is OFF, upper ventilator door is controlled.
When MODE position (driver side) is VENT or B/L, upper ventilation door is controlled.
When UPPER VENT switch is OFF, UPPER VENT switch indicator turn OFF, and upper ventilator door is
shut.
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AIR CONDITIONER CONTROL
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A/C SWITCH
Compressor is ON or OFF with this switch.
(Pressing the A/C switch when the A/C switch is ON will turn OFF the A/C switch and compressor.)
FAN SWITCHES
The blower speed is manually controlled with this switch. Seven speeds are available for manual control (as
shown on the display screen).
OFF SWITCH
Compressor and blower are OFF, intake doors are set to the outside air position, and the mode doors are set
to the foot (19% vent, 58% foot and 23% defrost) position.
REAR WINDOW DEFOGGER SWITCH
When illumination is ON, rear window is defogged.
INTAKE SWITCH
When intake switch is ON, FRE LED turns ON, and air inlet is fixed to FRE.
When press intake switch again, REC LED turns ON, and air inlet is fixed to REC.
When intake switch is pressed for approximately 1.5 seconds or longer, FRE and REC LEDs blink twice.
Then, automatic control mode is entered. Inlet status is displayed by LED during automatic controlled.
When FRE LED is turned ON, shifting mode position to D/F or DEF, or when compressor is turned from
ON to OFF, intake switch is automatically turned OFF (fixed to FRE mode). REC mode can be re-entered
by pressing intake switch again, and then compressor is turned ON. (Except D/F or DEF position)
DUAL SWITCH
When the DUAL switch indicator is illuminated, the driver-side and passenger-side temperature can each
be set independently.
When the DUAL switch indicator is not illuminated, the driver-side outlet and setting temperature is
applied to both sides.
Control Operation (Rear Control Switch)NJS000G8
AUTO SWITCH
When pressing AUTO switch, display for turned on AUTO and fan speed is automatically controlled.
When pressing AUTO switch, air inlet, air outlet, fan speed, and discharge air temperature are automati-
cally controlled.
FA N S W I T C H
The blower speed is manually controlled with this switch. Five speeds are available for manual control (as
shown on the display screen).
REAR TEMPERATURE CONTROL SWITCH
Increases or decreases the set temperature.
RJIA4216E

ATC-36
AIR CONDITIONER CONTROL
Revision: 2006 January2006 M35/M45
A temperature for the rear seat with respect to a set temperature for the front seat can be adjusted by
operating switch.
Rear temperature control switch allows to select a temperature every 0.5C (1F) in the 18C (60F) to
32
C (90F) range.
When the DUAL switch is ON, temperature for the rear seat changes keeping the temperature difference
between two front seats. [e.g. When lowering the set temperature for the rear seat 1
C (2F) by operating
rear control switch at a set temperature of 25
C (77F) for the driver’s seat and 26C (79F) for the pas-
senger’s seat, the set temperature for the driver’s seat and passenger’s seat lower 1
C (2F) and become
24
C (75F) for the driver’s seat and 25C (77F) for the passenger’s seat.]
NOTE:
A set temperature for the rear seat is tied to a set temperature for the passenger’s seat. Therefore, a set
temperature for the rear seat changes in conjunction with a set temperature for the passenger’s seat
(When the set temperature of front seats are independent).
Fail-Safe FunctionNJS000G9
If a communication error exists between the unified meter and A/C amp.,and the AV control unit or NAVI
control unit and multifunction switch for 30 seconds or longer, air conditioner is controlled under the follow-
ing conditions:
Compressor : ON
Air outlet : AUTO
Air inlet : FRE (Fresh)
Blower fan speed : AUTO
Set temperature : Setting before communication error occurs
Display : OFF

AIR CONDITIONER CONTROL
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Discharge Air FlowNJS000GA
RJIA4024E

ATC-38
AIR CONDITIONER CONTROL
Revision: 2006 January2006 M35/M45
System DescriptionNJS000GB
SWITCHES AND THEIR CONTROL FUNCTION
SJIA1730E
RJIA4026E

AIR CONDITIONER CONTROL
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CAN Communication System DescriptionNJS000GC
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-34,
"CAN Communication Unit" .

ATC-40
TROUBLE DIAGNOSIS
Revision: 2006 January2006 M35/M45
TROUBLE DIAGNOSISPFP:00004
CONSULT-II Function (ECM)NJS000GD
CONSULT-II can display each diagnosis item using the diagnosis test modes shown following.
CONSULT-II BASIC OPERATION
Refer to GI-39, "CONSULT-II Start Procedure" .
DATA MONITOR
Operation Procedure
1. Touch “ENGINE” on “SELECT SYSTEM” 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 monitored item can be recorded. To stop
recording, touch “STOP”.
Display Item List
How to Perform Trouble Diagnosis for Quick and Accurate RepairNJS000GE
WORK FLOW
System part Check item, diagnosis mode Description
ECM Data monitor Displays ECM input data in real time.
All signals Monitors all the items.
Selection from menu Selects and monitors the individual item selected.
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.
REFRIGERANT
PRESSURE SEN-
SOR “V”Displays “Refrigerant pressure sensor for voltage” status as inputted from refrigerant pressure sen-
sor.
*1ATC-64, "Operational Check"
SHA900E

TROUBLE DIAGNOSIS
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SYMPTOM TABLE
Symptom Reference Page
A/C system does not come on. Go to Trouble Diagnosis Procedure for A/C System.ATC-66, "
Power
Supply and Ground
Circuit for Auto
Amp."
A/C system cannot be controlled. Go to Multifunction Switch System.AV-108, "
Multifunc-
tion Switch Cannot
Be Operated" (With-
out mobile enter-
tainment system) or
AV-253, "
Multifunc-
tion Switch Cannot
Be Operated" ( Wi t h
mobile entertain-
ment system)
Air outlet does not change.
Go to Trouble Diagnosis Procedure for Mode Door Motor. (LAN)ATC-75, "
Mode
Door Motor Circuit"Mode door motor does not operate normally.
Upper ventilator outlet does not change.
Go to Trouble Diagnosis Procedure for Upper Ventilator Door
Motor. (LAN)ATC-80, "
Upper
Ventilator Door
Motor Circuit"Upper ventilator door motor does not oper-
ate normally.
Discharge air temperature does not change.
Go to Trouble Diagnosis Procedure for Air Mix Door Motor.
(LAN)AT C - 8 3 , "
Air Mix
Door Motor Circuit"Air mix door motor does not operate nor-
mally.
Intake door does not change.
Go to Trouble Diagnosis Procedure for Intake Door Motor. (LAN)AT C - 8 6 , "
Intake
Door Motor Circuit"Intake door motor does not operate nor-
mally.
Blower motor operation is malfunctioning. Go to Trouble Diagnosis Procedure for Blower Motor.ATC-89, "
Blower
Motor Circuit"
Magnet clutch does not engage. Go to Trouble Diagnosis Procedure for Magnet Clutch.AT C - 9 4 , "Magnet
Clutch Circuit"
Insufficient coolingGo to Trouble Diagnosis Procedure for Insufficient Cooling.ATC-99, "
Insufficient
Cooling"
Go to Diagnosis Procedure for Insufficient Cooling.ATC-107, "
DIAG-
NOSIS PROCE-
DURE FOR
INSUFFICIENT
COOLING"
Insufficient heating Go to Trouble Diagnosis Procedure for Insufficient Heating.ATC-109, "Insuffi-
cient Heating"
Noise Go to Trouble Diagnosis Procedure for Noise.AT C - 11 0 , "Noise"
Self-diagnosis cannot be performed. Go to Trouble Diagnosis Procedure for Self-diagnosis.AT C - 111 , "Self-
Diagnosis"
Memory function does not operate. Go to Trouble Diagnosis Procedure for Memory Function.AT C - 11 2 , "Memory
Function"
Rear control switch does not operate. Go to Trouble Diagnosis Procedure for Rear Control Switch.AT C - 6 9 , "Rear Con-
trol Switch Circuit"

ATC-42
TROUBLE DIAGNOSIS
Revision: 2006 January2006 M35/M45
Component Parts and Harness Connector LocationNJS000GF
ENGINE COMPARTMENT
RJIA4030E

TROUBLE DIAGNOSIS
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PASSENGER COMPARTMENT
RJIA4031E