2014 NISSAN TEANA Pro pressure

HAC-94
< SYMPTOM DIAGNOSIS >[AUTOMATIC AIR CONDITIONER]
HEATER AND AIR CONDITIONING
SYSTEM CONTROL SYMPTOMS
SYMPTOM DIAGNOSIS
HEATER AND AIR CONDITIONING SYSTEM CONTROL SYMPTOMS
Diagnosis Chart By SymptomINFOID:0000000009463166
NOTE:
Perform the self-diagnoses with CONSULT before perfo rming the symptom diagnosis. If DTC is detected, per-
form the corresponding diagnosis.
Symptom Corresponding malfunction part Reference
• Air conditioning does not activate.
• Air conditioning cannot be controlled.
• Operation status of air conditioning is not indicated on display. • A/C auto amp. ignition power supply
circuit
• Front A/C control (A/C auto amp.) HAC-78, "A/C AUTO AMP. : Diag-
nosis Procedure"
• Air outlet does not change.
• Mode door motor does not operate normally. • Circuit between mode door motor
and A/C auto amp.
• Mode door motor control linkage
• Mode door motor
• A/C auto amp. HAC-80, "MODE DOOR MOTOR :
Diagnosis Procedure"
• Discharge air temperature of driver side does not
change.
• Air mix door motor LH does not operate normally. • Circuit between air mix door motor
LH and A/C auto amp.
• Air mix door motor LH installation condition
• Air mix door motor LH
• A/C auto amp. HAC-78, "AIR MIX DOOR MOTOR
(DRIVER SIDE) : Diagnosis Proce-
dure"
• Discharge air temperature of passenger side does
not change.
• Air mix door motor RH does not operate normally. • Circuit between air mix door motor
RH and A/C auto amp.
• Air mix door motor RH installation condition
• Air mix door motor RH
• A/C auto amp. HAC-79, "AIR MIX DOOR MOTOR
(PASSENGER SIDE) : Diagnosis
Procedure"
• Intake door does not change.
• Intake door motor does not operate normally. • Circuit between intake door motor
and A/C auto amp.
• Intake door motor control linkage
• Intake door motor
• A/C auto amp. HAC-81, "INTAKE DOOR MOTOR :
Diagnosis Procedure"
All door motors do not operate normally.
• Each door motor power supply and
ground circuit
• A/C auto amp. HAC-89, "Diagnosis Procedure"
Blower motor operation is malfunctioning. • Power supply system of front blower
motor
• Circuit between front blower motor
and A/C auto amp.
• Front blower motor
• A/C auto amp. HAC-84, "Diagnosis Procedure"
Compressor does not operate. • Circuit between magnet clutch and
IPDM E/R
• Magnet clutch
• IPDM E/R (A/C relay)
• Circuit between ECM and refriger- ant pressure sensor
• Refrigerant pressure sensor
• CAN communication circuit
• A/C auto amp. HAC-87, "Diagnosis Procedure"
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

HAC-96
< SYMPTOM DIAGNOSIS >[AUTOMATIC AIR CONDITIONER]
INSUFFICIENT COOLING
INSUFFICIENT COOLING
DescriptionINFOID:0000000009463167
Symptom
• Insufficient cooling
• No cool air comes out. (Air flow volume is normal.)
Diagnosis ProcedureINFOID:0000000009463168
NOTE:
Perform self-diagnoses with CONSULT before performi ng symptom diagnosis. If any DTC is detected, per-
form the corresponding diagnosis.
1.CHECK MAGNET CLUTCH OPERATION
1. Turn ignition switch ON.
2. Operate fan switch.
3. Press A/C switch.
4. Check that A/C indicator turns ON. Check visually and by sound that compressor operates.
5. Press A/C switch again.
6. Check that A/C indicator turns OFF. Check that compressor stops.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Perform diagnosis of “COMPRESSOR DOES NOT OPERATE” in “SYMPTOM DIAGNOSIS”.
Refer to HAC-99, "Diagnosis Procedure"
.
2.CHECK DRIVE BELT
Check tension of drive belt. Refer to EM-19, "Checking Drive Belts"
(QR25DE) or EM-134, "Checking Drive
Belts" (VQ35DE).
Is the inspection result normal?
YES >> GO TO 3.
NO >> Adjust or replace drive belt depending on the inspection results.
3.CHECK REFRIGERANT CYCLE
Connect recovery/recycling recharging equipment to the vehicle and perform pressure inspection with gauge.
Refer to HA-18, "Symptom Table"
.
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair or replace parts depending on the inspection results.
4.CHECK AIR LEAKAGE FROM EACH DUCT
Check duct and nozzle, etc. of the fr ont air conditioning system for leakage.
Is the inspection result normal?
YES >> GO TO 5.
NO >> Repair or replace parts depending on the inspection results.
5.CHECK AMBIENT TEMPERATURE DISPLAY
Check that there is not much difference between act ual ambient temperature and indicated temperature on
information display in combination meter.
Is the inspection result normal?
YES >> GO TO 6.
NO >> Perform diagnosis for the A/C auto amp. connection recognition signal circuit. Refer to HAC-60,
"Diagnosis Procedure".
6.CHECK SETTING OF TEMPERATURE SETTING TRIMMER (FRONT)
1. Check setting value of temperature setting trimmer (front). Refer to HAC-50, "Temperature Setting Trim-
mer".
2. Check that temperature setting trimme r (front) is set to “+ direction”.
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

COMPRESSOR DOES NOT OPERATEHAC-99
< SYMPTOM DIAGNOSIS > [AUTOMATIC AIR CONDITIONER]
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COMPRESSOR DOES NOT OPERATE
DescriptionINFOID:0000000009463171
Symptom: Compressor does not operate.
Diagnosis ProcedureINFOID:0000000009463172
NOTE:
• Perform self-diagnoses with CONSULT before perform ing symptom diagnosis. If DTC is detected, perform
the corresponding diagnosis.
• Check that refrigerant system is properly charged. If refrigerant amount is below the proper amount, perform
inspection of refrigerant leakage.
1.CHECK MAGNET CLUTCH OPERATION
Check magnet clutch. Refer to HAC-87, "Component Function Check"
.
Does it operate normally?
YES >> GO TO 2.
NO >> Repair or replace malfunctioning parts.
2.CHECK REFRIGERANT PRESSURE SENSOR
Check refrigerant pressure sensor. Refer to EC-523, "Component Function Check"
(QR25DE) or EC-979,
"Component Function Check" (VQ35DE).
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace malfunctioning parts.
3.CHECK A/C AUTO AMP. OUTPUT SIGNAL
With CONSULT
Check “COMP REQ SIG” and “FAN REQ SIG” in “D ATA MONITOR” mode of “HVAC” using CONSULT.
Is the inspection result normal?
YES >> GO TO 4.
NO >> Replace A/C auto amp. Refer to HAC-102, "Removal and Installation"
.
4.CHECK ECM INPUT SIGNAL
With CONSULT
Check “AIR COND SIG” and “HEATER FAN SW” in “DATA MONITOR” mode of “ECM” using CONSULT.
Is the inspection result normal?
YES >> GO TO 5.
NO >> Check CAN communication system. Refer to LAN-18, "Trouble Diagnosis Flow Chart"
.
5.CHECK IPDM E/R INPUT SIGNAL
With CONSULT
Monitor item Condition Status
COMP REQ SIG A/C switch ON On
OFF Off
FAN REQ SIG Blower motor ON On
OFF Off
Monitor item Condition Status
AIR COND SIG A/C switch ON On
OFF Off
HEATER FAN SW Blower motor ON On
OFF Off
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

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

INSUFFICIENT COOLINGHAC-155
< SYMPTOM DIAGNOSIS > [MANUAL AIR CONDITIONER]
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INSUFFICIENT COOLING
Component Function CheckINFOID:0000000009463223
SYMPTOM: Insufficient cooling
INSPECTION FLOW
1. CONFIRM SYMPTOM BY PERFORMING OP ERATION CHECK - TEMPERATURE DECREASE
1. Press the A/C switch.
2. Turn temperature control dial counterclockwise to maximum cold.
3. Check for cold air at discharge air outlets.
Can a symptom be duplicated?
YES >> GO TO 3
NO >> GO TO 2
2. CHECK FOR ANY SYMPTOMS
Perform a complete operational check and check for any symptoms. Refer to HAC-140, "Work Procedure"
.
Does another symptom exist?
YES >> Refer to HAC-154, "Symptom Table".
NO >> System OK.
3. CHECK FOR SERVICE BULLETINS
Check for any service bulletins.
>> GO TO 4
4. CHECK DRIVE BELTS
Check A/C compressor belt tension. Refer to EM-19, "Checking Drive Belts"
(QR25DE) or EM-134, "Checking
Drive Belts" (VQ35DE).
Is the inspection result normal?
YES >> GO TO 5
NO >> Adjust or replace compressor belt. Refer to EM-19, "Tension Adjustment"
(QR25DE) or EM-134,
"Tension Adjustment" (VQ35DE).
5. CHECK AIR MIX DOOR MOTOR OPERATION
Check and verify air mix door mechanism for smooth operation.
Does air mix door operate correctly?
YES >> GO TO 6
NO >> Check air mix door motor circuit. Refer to HAC-144, "Diagnosis Procedure"
.
6. CHECK COOLING FAN MOTOR OPERATION
Check and verify cooling f an motor for smooth operation.
Does cooling fan motor operation correctly?
YES >> GO TO 7
NO >> Check cooling fan motor. Refer to EC-499, "Component Function Check"
(QR25DE) or EC-953,
"Component Function Check" (VQ35DE).
7. CHECK RECOVERY/RECYCLING EQUIPMENT BEFORE USAGE
Check recovery/recycling equipment befor e connecting to vehicle. Verify there is no pressure in the recovery/
recycling equipment by checking the gauges. If pressure exists, recover refrigerant from equipment lines.
>> GO TO 8
8. CHECK REFRIGERANT PURITY
1. Connect recovery/recycling equipment to vehicle.
2. Confirm refrigerant purity in supply tank us ing recovery/recycling and refrigerant identifier.
Is the inspection result normal?
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

COMPRESSOR DOES NOT OPERATEHAC-159
< SYMPTOM DIAGNOSIS > [MANUAL AIR CONDITIONER]
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COMPRESSOR DOES NOT OPERATE
DescriptionINFOID:0000000009463225
Symptom: Compressor does not operate.
Diagnosis ProcedureINFOID:0000000009463226
NOTE:
• Perform self-diagnoses with CONSULT before perform ing symptom diagnosis. If DTC is detected, perform
the corresponding diagnosis.
• Check that refrigerant system is properly charged. If refrigerant amount is below the proper amount, perform
inspection of refrigerant leakage.
1.CHECK MAGNET CLUTCH OPERATION
Check magnet clutch. Refer to HAC-87, "Component Function Check"
.
Does it operate normally?
YES >> GO TO 2.
NO >> Repair or replace malfunctioning parts.
2.CHECK REFRIGERANT PRESSURE SENSOR
Check refrigerant pressure sensor. Refer to EC-523, "Component Function Check"
(QR25DE) or EC-979,
"Component Function Check" (VQ35DE).
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace malfunctioning parts.
3.CHECK FRONT AIR CONTROL OUTPUT SIGNAL
With CONSULT
Check “FAN ON” and “” in “DATA MONI TOR” mode of “” using CONSULT.
Is the inspection result normal?
YES >> GO TO 4.
NO >> Replace front air control. Refer to HAC-161, "Removal and Installation"
.
4.CHECK ECM INPUT SIGNAL
With CONSULT
Check “AIR COND SIG” and “HEATER FAN SW” in “DATA MONITOR” mode of “ECM” using CONSULT.
Is the inspection result normal?
YES >> GO TO 5.
NO >> Check CAN communication system. Refer to LAN-18, "Trouble Diagnosis Flow Chart"
.
5.CHECK IPDM E/R INPUT SIGNAL
With CONSULT
Monitor item Condition Status
AIR COND SW A/C switch ON On
OFF Off
FAN ON Blower motor ON On
OFF Off
Monitor item Condition Status
AIR COND SIG A/C switch ON On
OFF Off
HEATER FAN SW Blower motor ON On
OFF Off
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

ENGINE OILLU-9
< PERIODIC MAINTENANCE > [QR25DE]
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PERIODIC MAINTENANCE
ENGINE OIL
InspectionINFOID:0000000009461028
OIL LEVEL
• Before starting the engine, check the oil level. If t
he engine is already started, stop it and allow 10 minutes
before checking.
• Check that the oil level is within the range (A) on the oil level
gauge.
• If it is out of range, add oil as necessary.
ENGINE OIL APPEARANCE
• Check engine oil for white milky appearance or excessive contamination.
• If engine oil becomes milky, it is highly probable t hat it is contaminated with engine coolant. Repair or
replace damaged parts.
OIL LEAKAGE
Check for oil leakage around the following areas:
•Oil pan
• Oil pan drain plug
• Oil pressure switch
• Oil filter
• Oil cooler
• Valve timing control cover and valve timing control solenoid valve
• Front cover
• Mating surface between cylinder block and cylinder head
• Mating surface between cylinder head and rocker cover
• Crankshaft oil seal (front and rear)
OIL PRESSURE CHECK
WARNING:
• Be careful not to burn yoursel f, as engine oil may be hot.
• Put the CVT shift selector in the Park "P" position.
1. Check engine oil level. Refer to OIL LEVEL.
2. Remove fender protector side cover (RH). Refer to EXT-26, "FENDER PROTECTOR : Exploded View"
.
3. Disconnect oil pressure switch harness connector at oil pressure switch. Remove oil pressure switch and install Tools.
CAUTION:
Do not drop or shock oil pressure switch.
4. Start engine and warm it up to normal operating temperature.
5. Check oil pressure with engine running under no-load, using Tool. NOTE:
JPBIA1497ZZ
Tool numbers : ST25051001 (J-25695-1)
: ST25052000 (J-25695-2)
WBIA0571E
Revision: November 20132014 Altima NAM

LU-10
< PERIODIC MAINTENANCE >[QR25DE]
ENGINE OIL
• When engine oil temperature is low, engine oil pressure becomes high.
• If difference is extreme, check oil passage and oil pump for oil leaks.
6. After the inspections, install oil pressure switch as follows:
a. Remove old liquid gasket adhering to oil pressure switch.
b. Apply liquid gasket and tighten oil pressure switch to the specification. Use Genuine RTV Silicone Sealant or equivalent.
c. After warming up engine, make sure there are no engine oil leaks.
7. Install fender protector side cover (RH). Refer to EXT-26, "FENDER PROTECTOR : Exploded View"
.
Changing Engine OilINFOID:0000000009461029
WARNING:
• Be careful not to burn yourself, as the engine oil may be hot.
• Prolonged and repeated contact with used engine oil may cause skin cancer: try to avoid direct skin
contact with used oil. If skin contact is made, wash thoroughly with soap or hand cleaner as soon as
possible.
1. Position the vehicle so it is level on the hoist.
2. Warm up the engine and check for oil leaks from the engine.
3. Stop engine and wait for 10 minutes.
4. Remove the oil pan drain plug (1) and oil filler cap.
5. Drain the engine oil.
6. Install the oil pan drain plug with a new washer and refill the engine with new engine oil.
CAUTION:
• Be sure to clean the oil pan drain plug and install using a new washer.
• The refill capacity depends on the oil temper ature and drain time. Use these specifications for
reference only. Always use the oil level gauge to determine when the proper amount of oil is in
the engine.
7. Warm up the engine and check around the drain plug and oil filter for oil leaks.
8. Stop the engine and wait for 10 minutes.
9. Check the oil level using the oil level gauge. CAUTION:
Do not overfill the engine with engine oil. Engine oil pressure : Refer to
LU-18, "Oil Pressure"
Oil pressure switch : Refer to EM-28, "Exploded View"
: Front
Oil specification and
viscosity : Refer to
MA-11, "FOR USA
AND CANADA : Engine Oil
Recommendation".
Oil pan drain plug : EM-36, "Removal and Installa-
tion"
JPBIA1676ZZ
Revision: November 20132014 Altima NAM