ECO mode NISSAN TEANA 2014 Service Manual
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HEATER AND AIR CONDITIONING SYSTEM SYMPTOMS
HA-17
< SYMPTOM DIAGNOSIS >
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SYMPTOM DIAGNOSIS
HEATER AND AIR CONDITIONING SYSTEM SYMPTOMS
Symptom TableINFOID:0000000009463922
SYMPTOM TABLE
Symptom Reference Page
A/C system does not come on. Go to Trouble Diagnosis Procedure for A/C System. HAC-159
(manual A/C)
HAC-99
(automatic A/C)
A/C system cannot be controlled. Go to Self-diagnosis Function. HAC-139
(manual A/C)
HAC-46
(automatic A/C)
Air outlet does not change. Go to Trouble Diagnosis Procedure for Mode Door
Motor. HAC-142
(manual A/C)
HAC-73
(automatic A/C)
Mode door motor is malfunctioning.
Discharge air temperature does not change.
Go to Trouble Diagnosis Procedure for Air Mix Door
Motor. HAC-144
(manual A/C)
HAC-69
(automatic A/C driver side)
HAC-71
(automatic A/C passen-
ger side)
Air mix door motor is malfunctioning.
Intake door does not change.
Go to Trouble Diagnosis Procedure for Intake Door
Motor. HAC-146
(manual A/C)
HAC-75
(automatic A/C)
Intake door motor is malfunctioning.
Blower motor operation is malfunctioning. Go to Trouble Diagnosis Procedure for Blower Mo-
tor. HAC-148
(manual A/C)
HAC-84
(automatic A/C)
Magnet clutch does not engage. Go to Trouble Diagnosis Procedure for Magnet
Clutch. HAC-151
(manual A/C)
HAC-87
(automatic A/C)
Insufficient cooling. Go to Trouble Diagnosis Procedure for Insufficient
Cooling. HAC-155
(manual A/C)
HAC-96
(automatic A/C)
Insufficient heating. Go to Trouble Diagnosis Procedure for Insufficient
Heating. HAC-157
(manual A/C)
HAC-98
(automatic A/C)
Noise. Go to Trouble Diagnosis Procedure for Noise. HA-20
A/C switch LED does not illuminate. Go to Trouble Diagnosis Procedure for A/C System.HAC-152 (manual A/C)
HAC-83
(automatic A/C)
Mode button LED(s) does not illuminate. Go to Trouble Diagnosis Procedure for A/C System. HAC-152
(manual A/C)
HAC-83
(automatic A/C)
Both high- and low-pressure sides are too
high. Go to Trouble Diagnosis Procedure for Abnormal
Pressure. HA-18
High-pressure side is too high and low-pres-
sure side is too low. Go to Trouble Diagnosis Procedure for Abnormal
Pressure. HA-18
High-pressure side is too low and low-pres-
sure side is too high. Go to Trouble Diagnosis Procedure for Abnormal
Pressure. HA-18
Both high- and low-pressure side some-
times becomes negative. Go to Trouble Diagnosis Procedure for Abnormal
Pressure. HA-18
Low-pressure side sometimes becomes
negative. Go to Trouble Diagnosis Procedure for Abnormal
Pressure. HA-18
Low-pressure side becomes negative.
Go to Trouble Diagnosis Procedure for Abnormal
Pressure. HA-18
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![NISSAN TEANA 2014 Service Manual
SYSTEMHAC-15
< SYSTEM DESCRIPTION > [AUTOMATIC AIR CONDITIONER]
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• When air outlet is VENT or B/L, the minimum air flow is changed depending on sunload.
STARTING NISSAN TEANA 2014 Service Manual
SYSTEMHAC-15
< SYSTEM DESCRIPTION > [AUTOMATIC AIR CONDITIONER]
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• When air outlet is VENT or B/L, the minimum air flow is changed depending on sunload.
STARTING](/img/5/57390/w960_57390-2663.png)
SYSTEMHAC-15
< SYSTEM DESCRIPTION > [AUTOMATIC AIR CONDITIONER]
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• When air outlet is VENT or B/L, the minimum air flow is changed depending on sunload.
STARTING AIR FLOW CONTROL
• When blower motor is activated, A/C auto amp. graduallyincreases duty ratio of blower motor control signal to prevent a
sudden increase in discharge air flow.
• It takes approximately 8 seconds for air flow to reach HI from LOW.
LOW COOLANT TEMPERATURE STARTING CONTROL
If the engine coolant temperature is 56 °C (133 °F) or less, to prevent
a cold discharged air flow, A/C auto amp. suspends blower motor
activation for a maximum of 150 seconds depending on target air
mix door opening angle. After this, blower motor control signal is
increased gradually, and blower motor is activated.
HIGH IN-VEHICLE TEMPERATURE STARTING CONTROL
When front evaporator fin temperature is high [intake sensor value is 35°C (95 °F) or more], to prevent a hot
discharged air flow, A/C auto amp. suspends blower moto r activation for approximately 3 seconds so that front
evaporator is cooled by refrigerant.
FAN SPEED CONTROL AT DOOR MOTOR OPERATION
When mode door motor is activated while air flow is more than the specified value, A/C auto amp. reduces fan
speed temporarily so that mode door moves smoothly.
Air Inlet ControlINFOID:0000000009463096
The intake door is automatically controlled by the temperature set-
ting, ambient temperature, in-vehicle temperature, intake tempera-
ture, amount of sunload and ON/OFF operation of the compressor.
Intake door automatic control selects FRE, 20% FRE, or REC
depending on a target air mix door opening angle, based on in-vehi-
cle temperature, ambient temperature, and sunload.
JMIIA0735GB
JMIIA0736GB
JMIIA0737GB
JMIIA0732GB
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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 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](/img/5/57390/w960_57390-2664.png)
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
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![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 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](/img/5/57390/w960_57390-2670.png)
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.
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HAC-24
< SYSTEM DESCRIPTION >[AUTOMATIC AIR CONDITIONER]
DIAGNOSIS SYSTEM
(A/C AUTO AMP.)
DIAGNOSIS SYSTEM (A/C AUTO AMP.)
CONSULT Function (HVAC)INFOID:0000000009463103
CAUTION:
After disconnectin NISSAN TEANA 2014 Service Manual
HAC-24
< SYSTEM DESCRIPTION >[AUTOMATIC AIR CONDITIONER]
DIAGNOSIS SYSTEM
(A/C AUTO AMP.)
DIAGNOSIS SYSTEM (A/C AUTO AMP.)
CONSULT Function (HVAC)INFOID:0000000009463103
CAUTION:
After disconnectin](/img/5/57390/w960_57390-2672.png)
HAC-24
< SYSTEM DESCRIPTION >[AUTOMATIC AIR CONDITIONER]
DIAGNOSIS SYSTEM
(A/C AUTO AMP.)
DIAGNOSIS SYSTEM (A/C AUTO AMP.)
CONSULT Function (HVAC)INFOID:0000000009463103
CAUTION:
After disconnecting the CONSULT vehicle interface (VI) from the data link connector, the ignition must
be cycled OFF → ON (for at least 5 seconds) → OFF. If this step is not performed, the BCM may not go
to ”sleep mode”, potentially causing a di scharged battery and no-start condition.
CONSULT can display each diagnosis item us ing the diagnosis test modes as shown.
CONSULT application items
SELF-DIAGNOSTIC RESULT
Refer to HAC-31, "DTC Index".
Display Item List
Diagnosis mode Description
Self-Diagnostic Result Displays the diagnosis results judged by A/C auto amp.
Data Monitor Displays A/C auto amp. input/output data in real time.
Work support Changes the setting for each system function.
Active Test The signals used to activate each device are forcibly supplied from A/C auto amp.
ECU Identification Displays the A/C auto amp. number.
Configuration • The vehicle specification can be read and saved.
• The vehicle specification can be written when replacing A/C auto amp.
DTC Items
(CONSULT screen terms) Diagnostic item is detected when... Possible cause
U1000 CAN COMM CIRCUIT When A/C auto amp. is not transmitting
or receiving CAN communication signal
for 2 or more seconds. CAN communication system
U1010 CONTROL UNIT (CAN) When detecting error during the initial
diagnosis of CAN controller of A/C auto
amp. A/C auto amp.
B257B AMB TEMP SEN (SHORT) Detected temperature at ambient sen-
sor 55 °C (131 °F) or more • Ambient sensor
• A/C auto amp.
• Harness and connector (Ambient sensor circuit is open,
or there is a short in the circuit)
B257C AMB TEMP SEN (OPEN)
Detected temperature at ambient sen-
sor −30 °C ( −22 °F) or less
B2578 IN-CAR SENSOR (OUT OF RANGE
[LOW]) Detected temperature at in-vehicle sen-
sor 55 °C (131 °F) or more • In-vehicle sensor
• A/C auto amp.
• Harness and connector (In-vehicle sensor circuit is open,
or there is a short in the circuit)
B2579
IN-CAR SENSOR (OUT OF RANGE
[HI]) Detected temperature at in-vehicle sen-
sor −30 °C ( −22 °F) or less
B2581 EVAP TEMP SEN (SHORT) Detected temperature at intake sensor
55 °C (131 °F) or more • Intake sensor
• A/C auto amp.
• Harness and connector
(Intake sensor circuit is open, or
there is a short in the circuit)
B2582 EVAP TEMP SEN (OPEN)
Detected temperature at intake sensor
− 30 °C ( −22 °F) or less
B2630
*SUNLOAD SEN (SHORT) Detected calorie at sunload sensor
1395 w/m2 (1200 kcal/m2·h) • Sunload sensor
• A/C auto amp.
• Harness and connector (Sunload sensor circuit is open,
or there is a short in the circuit)
B2631
*SUNLOAD SEN (OPEN) Detected calorie at sunload sensor 0 w/
m2 (0 kcal/m2·h)
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HAC-26
< SYSTEM DESCRIPTION >[AUTOMATIC AIR CONDITIONER]
DIAGNOSIS SYSTEM
(A/C AUTO AMP.)
WORK SUPPORT
NOTE:
When the battery cable is disconnected from the negative terminal or when the battery vo NISSAN TEANA 2014 Service Manual
HAC-26
< SYSTEM DESCRIPTION >[AUTOMATIC AIR CONDITIONER]
DIAGNOSIS SYSTEM
(A/C AUTO AMP.)
WORK SUPPORT
NOTE:
When the battery cable is disconnected from the negative terminal or when the battery vo](/img/5/57390/w960_57390-2674.png)
HAC-26
< SYSTEM DESCRIPTION >[AUTOMATIC AIR CONDITIONER]
DIAGNOSIS SYSTEM
(A/C AUTO AMP.)
WORK SUPPORT
NOTE:
When the battery cable is disconnected from the negative terminal or when the battery voltage becomes 10V or less, the setting of
WORK SUPPORT may be cancelled.
ACTIVE TEST
HVAC TEST
FAN REQ SIG [On/Off] Displays blower switch ON/OFF status transmitted to other units via CAN communica-
tion
FAN DUTY [%] Duty ratio of blower motor judged by A/C auto amp.
XM Target discharge air temperature judged by A/C auto amp. according to the tempera-
ture setting and the value from each sensor
PA TARGET A/TEMP Target discharge front air temperature (passenger side) judged by A/C auto amp. de-
pending on the temperature setting and the value from each sensor.
ENG COOL TEMP [ °C] Water temperature signal value received from ECM via CAN communication
VEHICLE SPEED [km/h
(mph)] Vehicle speed signal value received from meter via CAN communication
Monitor item [Unit] Description
Work item Description Reference
TEMP SET CORRECT
(Setting of difference between tem-
perature setting and control tempera-
ture) If the temperature felt by the customer is different than the airflow
temperature controlled by the temperature setting, the auto ampli-
fier control temperature can be adjusted to compensate for the
temperature setting. HAC-50, "Temperature
Setting Trimmer"
REC MEMORY SET
(REC memory function setting) • If the ignition switch is turned to the OFF position while the REC
switch is set to ON (recirculation), “With” or “Without” of the REC
switch ON (recirculation) condition can be selected.
• If “” was set, the REC switch will be ON (recirculation) when turn-
ing the ignition switch to the ON position again.
• If “Without” was set, the air inlets will be controlled automatically when turning the ignition switch to the ON position again. HAC-51, "Inlet Port
Memory Function (REC)"
FRE MEMORY SET
(FRE memory function setting) • If the ignition switch is turned to the OFF position while the FRE
switch is set to ON (fresh air intake), “With” or “” of the FRE
switch ON (fresh air intake) condition can be selected.
• If “With” was set, the FRE switch will be ON (fresh air intake) when turning the ignition switch to the ON position again.
• If “Without” was set, the air inlets will be controlled automatically when turning the ignition switch to the ON position again. HAC-50, "Inlet Port
Memory Function (FRE)"
BLOW SET
(Blow setting to DEF in FOOT mode) In the FOOT mode, the air blowing to the DEF can change ON/
OFF. HAC-50, "Foot Position
Setting Trimmer"
TARGET EVAPORATOR TEMP UP-
PER LIMIT SETTING Set the target evaporator upper temperature limit.
HAC-51, "Target Evapo-
rator Temp Upper Limit"
Test item Description
HVAC TEST The operation check of A/C system can be performed by selecting the mode. Refer to the fol-
lowing table for the conditions of each mode.
Te s t i t e m
MODE 1 MODE 2 MODE 3 MODE 4 MODE 5 MODE 6 MODE 7
Mode door position VENT VENT B/L D/F1 D/F2 DEF DEF
Intake door position REC REC 20%FRE FRE FRE FRE FRE
Air mix door position
(driver & passenger
side) FULL COLD FULL COLD FULL COLD FULL HOT FULL HOT FULL HOT FULL HOT
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HAC-50
< BASIC INSPECTION >[AUTOMATIC AIR CONDITIONER]
SYSTEM SETTING
SYSTEM SETTING
Temperature Setting TrimmerINFOID:0000000009463111
Description
If the temperature felt by the customer is differen NISSAN TEANA 2014 Service Manual
HAC-50
< BASIC INSPECTION >[AUTOMATIC AIR CONDITIONER]
SYSTEM SETTING
SYSTEM SETTING
Temperature Setting TrimmerINFOID:0000000009463111
Description
If the temperature felt by the customer is differen](/img/5/57390/w960_57390-2698.png)
HAC-50
< BASIC INSPECTION >[AUTOMATIC AIR CONDITIONER]
SYSTEM SETTING
SYSTEM SETTING
Temperature Setting TrimmerINFOID:0000000009463111
Description
If the temperature felt by the customer is different
than the airflow temperature controlled by the temperature
setting, the auto amplifier control temperature can be adjusted to compensate for the temperature setting.
How to set
Using CONSULT, perform “TEMP SET CORRECT” in “WORK SUPPORT” of HVAC.
NOTE:
• When the temperature setting is set to 25.0 °C (77 °F) and −3.0 °C ( −6 °F), the temperature controlled by auto amp is 25.0 °C (77 °F) −
3.0 °C (6 °F) = 22.0 °C (71 °F) and the temperature becomes lower than the temperature setting.
• When the battery cable is disconnected from the negative terminal or when the battery voltage becomes 10V or less, the setting of the
difference between the temperature setting and control temperature may be cancelled.
Foot Position Setting TrimmerINFOID:0000000009463112
Description
In the FOOT mode, the air blowing to the DEF can be turned ON/OFF.
How to set
Using CONSULT, perform “BLOW SE T” in “WORK SUPPORT” of HVAC.
NOTE:
When the battery cable is disconnec ted from the negative terminal or when the battery voltage becomes 10V
or less, the setting of the discharge air mix ratio in FOOT mode may be cancelled.
Inlet Port Memory Function (FRE)INFOID:0000000009463113
Description
Work support items Display ( °F) Display ( °C)
TEMP SET CORRECT 63.0
52.5
42.0
31.5
21.0
10.5
0 (initial status) 0 (initial status) −1 −0.5
− 2 −1.0
− 3 −1.5
− 4 −2.0
− 5 −2.5
− 6 −3.0
Work support items Display DEF door position
Auto control Manual control
BLOW SET Mode 1 OPEN CLOSE
Mode 2 (initial status) OPEN OPEN
Mode 3 CLOSE OPEN
Mode 4 CLOSE CLOSE
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BLOWER MOTORHAC-85
< DTC/CIRCUIT DIAGNOSIS > [AUTOMATIC AIR CONDITIONER]
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1. Reconnect blower motor connector and A/C auto amp. connector.
2. Turn ignition switch NISSAN TEANA 2014 Service Manual
BLOWER MOTORHAC-85
< DTC/CIRCUIT DIAGNOSIS > [AUTOMATIC AIR CONDITIONER]
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1. Reconnect blower motor connector and A/C auto amp. connector.
2. Turn ignition switch](/img/5/57390/w960_57390-2733.png)
BLOWER MOTORHAC-85
< DTC/CIRCUIT DIAGNOSIS > [AUTOMATIC AIR CONDITIONER]
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1. Reconnect blower motor connector and A/C auto amp. connector.
2. Turn ignition switch ON.
3. Operate MODE switch to set air outlet to VENT.
4. Change fan speed from Lo to Hi, and check duty ratios between blower motor harness connector and
ground by using an oscilloscope.
NOTE:
Calculate drive signal duty ratio as shown in the figure.
T2 = Approx. 1.6 ms
Is the inspection result normal?
YES >> Replace blower motor. Refer to VTL-13, "BLOWER MOTOR : Removal and Installation".
NO >> Replace A/C auto amp. Refer to HAC-102, "Removal and Installation"
.
6.CHECK BLOWER MOTOR RELAY GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check continuity between fuse bl ock (J/B) harness connector and ground.
Is the inspection result normal?
YES >> GO TO 7.
NO >> Repair harness or connector.
7.CHECK FRONT BLOWER MOTOR RELAY
Check front blower motor relay. Refer to HAC-85, "Component Inspection (Front Blower Motor Relay)"
.
Is the inspection result normal?
YES >> Repair harness or connector between blower motor and fuse block (J/B).
NO >> Replace front blower motor relay.
Component Inspection (Blower Motor)INFOID:0000000009463157
1.CHECK BLOWER MOTOR
1. Connect battery voltage to terminal 1 of blower motor.
2. Connect ground to terminal 2 of blower motor.
Does the blower fan operate?
YES >> Intermittent incident. Refer to GI-43, "Intermittent Incident".
NO >> Replace blower motor. Refer to VTL-13, "BLOWER MOTOR : Removal and Installation"
.
Component Inspection (Front Blower Motor Relay)INFOID:0000000009463158
1.CHECK BLOWER RELAY
1. Turn ignition switch OFF.
2. Remove front blower motor relay.
Blower motor Condition Duty ratio
(Approx.)
Connector Terminal Fan speed (manual)
VENT mode
M31 17 1st 25 %
2nd 33 % 3rd 41 %4th 51 %
5th 61 %
6th 69 %
7th 81 %
JPLIA1210GB
Fuse block (J/B) —Continuity
Connector Terminal
M4 13R Ground Yes
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SYSTEM
HAC-119
< SYSTEM DESCRIPTION > [MANUAL AIR CONDITIONER]
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2. The blower speed dial is turned completely counterclockwise to the OFF position.
3. The A/C swit NISSAN TEANA 2014 Service Manual
SYSTEM
HAC-119
< SYSTEM DESCRIPTION > [MANUAL AIR CONDITIONER]
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2. The blower speed dial is turned completely counterclockwise to the OFF position.
3. The A/C swit](/img/5/57390/w960_57390-2767.png)
SYSTEM
HAC-119
< SYSTEM DESCRIPTION > [MANUAL AIR CONDITIONER]
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2. The blower speed dial is turned completely counterclockwise to the OFF position.
3. The A/C switch is manually turned OFF.
In other words, the compressor ON request cannot be turned off in D/F or DEF modes.
REFRIGERANT PRESSURE PROTECTION
The refrigerant system is protected against excessively high- or low-pressures by the refrigerant pressure sen-
sor, located on the liquid tank on the condenser. The refr igerant pressure sensor detects the pressure inside
the refrigerant line and sends a voltage signal to the EC M. If the system pressure rises above or falls below
the following values, the ECM requests the IPDM E/ R to de-energize the A/C relay and disengage the com-
pressor.
• 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
PRESSURE RELIEF VALVE
The refrigerant system is also protected by a pressure relief valve, located in the rear head of the compressor.
When the pressure of refrigerant in the system incr eases to an abnormal level [more than 2,990 kPa (30.5 kg/
cm
2, 433.6 psi)], the release port on the pressure relief valve automatically opens and releases refrigerant into
the atmosphere.
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.
OPERATING RATE CONTROL
When the set temperature is other than fully cold or the air outlet is “VENT”, “B/L” or “FOOT”, the front air con-
trol controls the compressor activation depending on ambient temperature.
Door ControlINFOID:0000000009463200
DOOR MOTOR CONTROL
• A Local Control Unit (LCU) is built into each door motor and detects the door position by using a Position
Balanced Resistor (PBR).
• Each door motor LCU has a unique address. The front air control communicates with the door motor LCUs by using each door’s unique communication address. The front air control sends requested door position
commands to each door motor LCU via a Local Interconnect Network (LIN) communication line. Each door
motor’s LCU receives the command and sends back a door position feedback signal.
• Each LCU controls each door to the appropriate posit ion depending on the control signal from the front air
control. When the door movement is complete, the LCU transmits a signal to the front air control indicating
that the door movement is complete.
SWITCHES AND THEIR CONTROL FUNCTION
ALIIA0607GB
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM
Page 2773 of 4801
![NISSAN TEANA 2014 Service Manual
HAC-124
< SYSTEM DESCRIPTION >[MANUAL AIR CONDITIONER]
DIAGNOSIS SYSTEM (BCM)
DIAGNOSIS SYSTEM (BCM)
CONSULT Function (BCM - COMMON ITEM)INFOID:0000000009958322
CAUTION:
After disconnecting the CONS NISSAN TEANA 2014 Service Manual
HAC-124
< SYSTEM DESCRIPTION >[MANUAL AIR CONDITIONER]
DIAGNOSIS SYSTEM (BCM)
DIAGNOSIS SYSTEM (BCM)
CONSULT Function (BCM - COMMON ITEM)INFOID:0000000009958322
CAUTION:
After disconnecting the CONS](/img/5/57390/w960_57390-2772.png)
HAC-124
< SYSTEM DESCRIPTION >[MANUAL AIR CONDITIONER]
DIAGNOSIS SYSTEM (BCM)
DIAGNOSIS SYSTEM (BCM)
CONSULT Function (BCM - COMMON ITEM)INFOID:0000000009958322
CAUTION:
After disconnecting the CONSULT vehicle interface (VI) from the data link connector, the ignition must
be cycled OFF → ON (for at least 5 seconds) → OFF. If this step is not performed, the BCM may not go
to ”sleep mode”, potentially causing a di scharged battery and a no-start condition.
APPLICATION ITEM
CONSULT performs the following functions via CAN communication with BCM.
SYSTEM APPLICATION
BCM can perform the following functions.
Direct Diagnostic Mode Description
Ecu Identification The BCM part number is displayed.
Self Diagnostic Result The BCM self diagnostic results are displayed.
Data Monitor The BCM input/output data is displayed in real time.
Active Test The BCM activates outputs to test components.
Work support The settings for BCM functions can be changed.
Configuration • The vehicle specification can be read and saved.
• The vehicle specification can be written when replacing BCM.
CAN Diag Support Mntr The result of transmit/receive diagnosis of CAN communication is displayed.
System Sub System Direct Diagnostic Mode
Ecu Identification
Self Diagnostic Result
Data Monitor
Active Test
Work support
Configuration
CAN Diag Support Mntr
Door lock DOOR LOCK ××××
Rear window defogger REAR DEFOGGER ×××
Warning chime BUZZER ××
Interior room lamp timer INT LAMP ×××
Remote keyless entry system MULTI REMOTE ENT ×××
Exterior lamp HEADLAMP ×××
Wiper and washer WIPER ×××
Turn signal and hazard warning lamps FLASHER ××
Air conditioner AIR CONDITIONER ×
Intelligent Key system INTELLIGENT KEY ××××
Combination switch COMB SW ×
BCM BCM × × ×××
Immobilizer IMMU ×××
Interior room lamp battery saver BATTERY SAVER ××
Trunk open TRUNK ×
Vehicle security system THEFT ALM ×××
RAP system RETAINED PWR ×
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM