Infiniti M45 (Y34). Manual — part 136
AIR CONDITIONER CONTROL
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Description of Control System
AJS0007B
The control system consists of input sensors, switches, the auto amp. (microcomputer) and outputs.
The relationship of these components is shown in the diagram below:
RJIA1263E
ATC-30
AIR CONDITIONER CONTROL
Control Operation
AJS0007C
DISPLAY SCREEN
Displays the operational status of the system.
AUTO SWITCH (DRIVER SIDE)
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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.
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When the A/C system is operating, if the screen is not displayed, press the AUTO switch once to display
the A/C screen. (The display time is determined by the navigation system settings.) Or, when the A/C sys-
tem is in manual control, and the DUAL switch is depressed, pressing the AUTO switch changes to auto-
control for the driver side only.
AUTO SWITCH (PASSENGER SIDE)
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.
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When the A/C system is operating, if the screen is not displayed, press the AUTO switch once to display
the A/C screen. (The display time is determined by the navigation system settings.) Or, when the A/C sys-
tem is in manual control, and the DUAL switch is depressed, pressing the AUTO switch changes to auto-
control for the passenger side only.
TEMPERATURE DIAL (POTENTIO TEMPERATURE CONTROL) (DRIVER SIDE)
Increase or decrease the set temperature.
TEMPERATURE DIAL (POTENTIO TEMPERATURE CONTROL) (PASSENGER SIDE)
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Increase or decrease the set temperature.
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When the temperature dial is turned, the DUAL switch indicator will automatically illuminate.
RJIA1264E
AIR CONDITIONER CONTROL
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INTAKE SWITCH
Set the inlet to automatic control or to REC-fixed. However, REC-fixed cannot be selected in DEF mode.
When the FRE switch is ON, the air inlet will be automatically controlled.
DEFROSTER (DEF) SWITCH
Positions the air outlet doors to the defrost position. Also position the intake doors to the outside air position.
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 (80% foot and 20% defrost) position.
MODE SWITCH (DRIVER SIDE)
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When the DUAL switch indicator is illuminated, the left and right outlets are switched together.
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When the DUAL switch indicator is not illuminated, only the driver-side outlet is switched.
MODE SWITCH (PASSENGER SIDE)
When the MODE switch is pressed, the DUAL switch indicator illuminates, and only the passenger-side outlet
is switched.
ECON (ECONOMY) SWITCH
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By pressing the ECON switch, the indicator of ECON switch should illuminate, and the control is switched
to economy control.
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When press ECON switch again, the indicator of ECON switch should not illuminate and the compressor
always turns OFF. With the compressor OFF, the system will not remove heat (cool) or de-humidify. The
system will maintain the in-vehicle temperature at the set temperature when the set temperature is above
the ambient (outside) temperature. The system will set the intake doors to the outside air position.
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When press ECON switch again, the control is switched to economy control.
FAN SWITCH
Manually controls the blower speed. Five speeds are available for manual control (as shown on the display
screen).
DUAL SWITCH
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When the DUAL switch indicator is not illuminated and the DUAL switch is pressed, the driver-side outlet
and passenger-side outlet, as well as the setting temperature, can each be set independently.
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When the DUAL switch indicator is illuminated and the DUAL switch is pressed, the driver-side outlet and
setting temperature are applied to both sides.
Fail-Safe Function
AJS000C0
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If a communication error exists between auto amp. and AV C/U or AV and NAVI C/U for 30 seconds or
longer, air conditioner is controlled under following conditions:
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Compressor: ON
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Air outlet: AUTO
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Air inlet: FRE (Fresh)
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Blower fan speed: AUTO
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Set temperature: Setting before communication error occurs
ATC-32
AIR CONDITIONER CONTROL
Discharge Air Flow
AJS0007D
RJIA0205E
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