2014 NISSAN TEANA Service Manual

TPMS battery replacement open hood trunk fuel pump automatic transmission fluid

Page 2665 of 4801

NISSAN TEANA 2014 Service Manual
HAC-16
< SYSTEM DESCRIPTION >[AUTOMATIC AIR CONDITIONER]
SYSTEM
Air Outlet Control
INFOID:0000000009463097
• While air outlet is in automatic control, A/C auto amp. selects the mode door position d

HAC-16
< SYSTEM DESCRIPTION >[AUTOMATIC AIR CONDITIONER]
SYSTEM
Air Outlet Control
INFOID:0000000009463097
• While air outlet is in automatic control, A/C auto amp. selects the mode door position depending on a target air mix door angle and
outlet air temperature calculated from sunload.
• If ambient temperature is excessively low, D/F is selected to pre- vent windshield fogging when air outlet is set to FOOT.
Compressor ControlINFOID:0000000009463098
DESCRIPTION
• When the compressor activation condition is satisfied whil e blower motor is activated, A/C auto amp. trans-
mits A/C ON signal and blower fan ON signal to ECM via CAN communication.
• ECM judges that the compressor can be activated depending on the state of each sensor (refrigerant pres-
sure sensor signal and others) and transmits A/C comp ressor request signal to IPDM E/R via CAN commu-
nication.
• IPDM E/R turns A/C relay ON and activate s the compressor depending on request from ECM.
COMPRESSOR PROTECTION CONTROL AT PRESSURE MALFUNCTION
When high-pressure side value that is detected by refrigerant pressure sensor is as per the following state,
ECM requests IPDM E/R to turn A/C relay OFF and stops the compressor.
• 3.12 MPa (31.82 kg/cm
2, 452.4 psi) or more (When the engine speed is less than 1,500 rpm)
• 2.74 MPa (27.95 kg/cm
2, 397.3 psi) or more (When the engine speed is 1,500 rpm or more)
• 0.14 MPa (1.43 kg/cm
2, 20.3 psi) or less
COMPRESSOR OIL CIRCULATION CONTROL
When the engine starts while the engine coolant temperature is 56 °C (133 °F) or less, ECM activates the com-
pressor for approximately 6 seconds and circulates the compressor lubricant once.
LOW TEMPERATURE PROTECTION CONTROL
• When intake sensor detects that front evaporator fin temperature is 2.5 °C (37 °F) or less, A/C auto amp. requests ECM to turn com-
pressor OFF, and stops the compressor.
• When the front evaporator fin temperature returns to 5.0 °C (41 °F)
or more, the compressor is activated.
OPERATING RATE CONTROL
When set temperature is other than fully cold or air out let is “VENT”, “B/L” or “FOOT” A/C auto amp. controls
the compressor activation depending on ambient temperature.
AIR CONDITIONING CUT CONTROL
When set engine is running is excessively high load conditi on, ECM requests IPDM E/R to turn A/C relay OFF,
and stops the compressor. Refer to EC-56, "AIR CONDITIONING CUT CONT ROL : System Description (with
automatic air conditioner)" (QR25DE) or EC-573, "AIR CONDITIONING CUT CONTROL : System Descrip-
tion" (VQ35DE) for details.
JMIIA0730GB
JMIIA0742GB
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

Page 2666 of 4801

NISSAN TEANA 2014 Service Manual
SYSTEMHAC-17
< SYSTEM DESCRIPTION > [AUTOMATIC AIR CONDITIONER]
C
D E
F
G H
J
K L
M A
B
HAC
N
O P
Door ControlINFOID:0000000009463099
DOOR MOTOR CONTROL
• LCU (Local Control Unit) is built into e

Page 2667 of 4801

NISSAN TEANA 2014 Service Manual
HAC-18
< SYSTEM DESCRIPTION >[AUTOMATIC AIR CONDITIONER]
SYSTEM
*: Inlet status is displayed by indicator during activating automatic control
AIR DISTRIBUTION
1. Intake door 2. Blower motor 3. In-cab

Page 2668 of 4801

NISSAN TEANA 2014 Service Manual
SYSTEMHAC-19
< SYSTEM DESCRIPTION > [AUTOMATIC AIR CONDITIONER]
C
D E
F
G H
J
K L
M A
B
HAC
N
O P
VENT MODE ( )
OUTLET VENT
ASST CTR
DR RR
ASST DR
AIR FLOW DISTRIBUTION RATIO (%) 22 22 22 22 12
B/L

Page 2669 of 4801

NISSAN TEANA 2014 Service Manual
HAC-20
< SYSTEM DESCRIPTION >[AUTOMATIC AIR CONDITIONER]
SYSTEM
Temperature Control
INFOID:0000000009463100
• When ignition switch is in the ON position, A/C auto amp. always automatically controls

Page 2670 of 4801

NISSAN TEANA 2014 Service Manual
OPERATIONHAC-21
< SYSTEM DESCRIPTION > [AUTOMATIC AIR CONDITIONER]
C
D E
F
G H
J
K L
M A
B
HAC
N
O P
OPERATION
Switch Name and FunctionINFOID:0000000009463102
CONTROL OPERATION
A/C Switch Assembly

Page 2671 of 4801

NISSAN TEANA 2014 Service Manual
HAC-22
< SYSTEM DESCRIPTION >[AUTOMATIC AIR CONDITIONER]
OPERATION
AUTO switchTurns the switch indicator lamp and "AUTO" indicator on the display ON, and then front air condition-
ing system becomes

HAC-22
< SYSTEM DESCRIPTION >[AUTOMATIC AIR CONDITIONER]
OPERATION
AUTO switchTurns the switch indicator lamp and "AUTO" indicator on the display ON, and then front air condition-
ing system becomes the following state.
• Air inlet: Automatic control
• Air outlet: Automatic control
• Blower fan: Automatic control
• Compressor: ON
Defroster switch Turns defroster mode (swi
tch indicator) between ON ⇔ OFF each time.
When defroster switch is pressed while front air conditioning system is in the ON position.
• When defroster mode is turned ON, front air conditioning system becomes the following state.
- Air inlet: Fresh air intake
- Air outlet: DEF
- Blower fan: Automatic control (If fan speed other than AUTO is selected before pressing defroster
switch, fan speed is manual control.)
- Compressor: ON
• When defroster mode is turned OFF, front air conditioning system state returns to the previous state
before defroster mode is selected. But, the following state is continued.
- Air inlet: Fresh air intake
- Compressor: ON
When defroster switch is pressed while front air conditioning system is in the OFF position.
• When defroster mode is turned ON, front air conditioning system becomes the following state.
- Air inlet: Fresh air intake
- Air outlet: Defroster
- Blower fan: Automatic control
- Compressor: ON
• When defroster mode is turned OFF, entire front air conditioning system is set to auto mode.
NOTE:
When defroster mode turns ON while front air conditioning system is in automatic control (“AUTO” is
indicated), automatic control is released (“AUTO” turns OFF).
DUAL switch • Turns left and right ventilation temperature control (switch indicator) between ON
⇔ OFF each
time.
• When DUAL switch indicator is ON, the driver side and passenger side temperatures can each be
set independently.
• When DUAL switch indicator is OFF, the driver side outlet and setting temperature is applied to both sides.
• Left and right ventilation temperature control is cancelled by turning the DEF mode ON.
NOTE:
When front air conditioning system is in the OFF position, left and right ventilation temperature control
can be selected only while front air conditioning system state (when MODE switch is pressed) is in-
dicated on the display.
Fan switch (UP/DOWN) Blower fan speed is manually controlled with these switches. Seven speeds are available for manual
control (as shown on the display screen).
NOTE:
• When fan switch is pressed while front air conditioning system is in OFF, front air conditioning sys- tem is activated. (Compressor control state returns to the previous state before front air condition-
ing system OFF.)
• When fan switch is pressed while front air conditioning system is in automatic control (“AUTO” is indicated), automatic control is released (“AUTO” turns OFF).
A/C switch Compressor control (switch in
dicator) changes between ON ⇔ OFF each time this switch is pressed
while front blower motor is operated.
NOTE:
• A/C switch cannot be turned ON when front blower motor is OFF.
• A/C switch cannot be turned OFF when air outlet is D/F or DEF.
• Air inlet changes to fresh air intake when A/C switch is turned OFF while air inlet is set to recircu- lation.
MODE switch Selects air outlet sequentially from VENT
⇒ B/L ⇒ FOOT ⇒ D/F ⇒ VENT each time.
NOTE:
• When front air conditioning system is in the OFF position, air outlet can be selected.
• When MODE switch is pressed while front air conditioning system is in automatic control (“AUTO” is indicated), automatic control is released (“AUTO” turns OFF).
ON/OFF switch • Turns front air conditioning system ON/OFF.
• When front air conditioning system turns OFF, air inlet and air outlet become the automatic control.
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

Page 2672 of 4801

NISSAN TEANA 2014 Service Manual
OPERATIONHAC-23
< SYSTEM DESCRIPTION > [AUTOMATIC AIR CONDITIONER]
C
D E
F
G H
J
K L
M A
B
HAC
N
O P
Fresh air switch Air inlet changes to fresh air (FRE) when this switch is pressed.
• Fresh ai

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