Nissan Almera Tino V10. Manual — part 207
ATC-24
AIR CONDITIONER CONTROL
FAN SPEED CONTROL
Blower speed is automatically controlled based on temperature setting, ambient temperature, in-vehicle tem-
perature, intake temperature, amount of sunload and air mix door position.
With FAN switch set to AUTO, the blower motor starts to gradually increase air flow volume.
When engine coolant temperature is low, the blower motor operation is delayed to prevent cool air from flow-
ing.
INTAKE DOOR CONTROL
The intake doors are automatically controlled by: The temperature setting, ambient temperature, in-vehicle
temperature, intake temperature, amount of sunload and ON-OFF operation of the compressor.
OUTLET DOOR CONTROL
The outlet door is automatically controlled by: The temperature setting, ambient temperature, in-vehicle tem-
perature, intake temperature and amount of sunload.
MAGNET CLUTCH CONTROL
The ECM controls compressor operation using input signals from the refrigerant pressure sensor (with QG
engine), throttle position sensor and auto amplifier.
SELF-DIAGNOSTIC SYSTEM
The self-diagnostic system is built into the auto amplifier (LCU) to quickly locate the cause of malfunctions.
Overview of Control system
EJS002ZZ
The control system consists of input sensors, switches, the automatic amplifier (microcomputer) and outputs.
The relationship of these components is shown in the diagram below:
RJIA0687E
AIR CONDITIONER CONTROL
ATC-25
C
D
E
F
G
H
I
K
L
M
A
B
ATC
Control Operation
EJS00300
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.
TEMPERATURE DIAL (POTENTIO TEMPERATURE CONTROL)
Increase or decrease the set temperature.
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.)
DEFROSTER (DEF) SWITCH
Positions the air outlet doors to the defrost position. Also positions the intake doors to the outside air position.
MODE SWITCH
Control the air discharge outlets.
FAN SWITCH
Manually controls the blower speed. Five speeds are available for manual control (as shown on the display
screen).
OFF SWITCH
The compressor and blower are OFF, the intake doors are set to the outside air position, and the air outlet
doors are set to the foot position.
FRESH (FRE) SWITCH
OFF position: Interior air is recirculated inside the vehicle.
ON position: Outside air is drawn into the passenger compartment.
(When RECIRCULATION switch is ON, the FRESH switch turns OFF automatically.)
RJIA1675E
ATC-26
AIR CONDITIONER CONTROL
RECIRCULATION (REC) SWITCH
OFF position: Outside air is drawn into the passenger compartment.
ON position: Interior air is drawn into the passenger compartment.
(When the FRESH switch is ON or the compressor is turned from ON to OFF, the RECIRCULATION switch
turns OFF automatically.)
REAR WINDOW DEFOGGER SWITCH
When illumination is ON, rear window is defogged.
Fail-safe Function
EJS00301
If fail-safe request signal is sent from AV control unit, or if communication error exists between auto amplifier
and AV control unit for at least 30 seconds, air conditioner is controlled under following conditions.
Compressor
: ON
Air inlet
: Fresh
Air outlet
: AUTO
Blower fan speed
: AUTO
Set temperature
: Setting before communication error occurs
AIR CONDITIONER CONTROL
ATC-27
C
D
E
F
G
H
I
K
L
M
A
B
ATC
Discharge Air Flow
EJS00302
NHA371
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