Heat NISSAN NOTE 2016 Service Repair Manual

HAC-1
VENTILATION, HEATER & AIR CONDITIONER
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CONTENTS
HEATER & AIR CONDITIONING CONTROL SYSTEM
MANUAL AIR CONDITIONING
PRECAUTION ....... ........................................
3
PRECAUTIONS .............................................. .....3
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ......
3
Precaution for Procedure without Cowl Top Cover ......3
Precaution for Work ..................................................3
Precautions For Refrigerant System Service ............4
Service Equipment .............................................. ......6
PREPARATION ............................................8
PREPARATION .............................................. .....8
Special Service Tool ........................................... ......8
Commercial Service Tool ..........................................8
SYSTEM DESCRIPTION ..............................9
COMPONENT PARTS ................................... .....9
Component Parts Location .................................. ......9
SYSTEM .............................................................11
System Description ............................................. ....11
Compressor Control ................................................11
Door Control ............................................................13
OPERATION .......................................................16
Switch Name and Function ................................. ....16
DIAGNOSIS SYSTEM (BCM) (WITH INTELLI-
GENT KEY SYSTEM) .........................................
17
COMMON ITEM ..................................................... ....17
COMMON ITEM : CONSULT Function (BCM -
COMMON ITEM) .....................................................
17
AIR CONDITIONER ............................................... ....18
AIR CONDITIONER : CONSULT Function (BCM -
AIR CONDITIONER) ........................................... ....
18
DIAGNOSIS SYSTEM (BCM) (WITHOUT IN-
TELLIGENT KEY SYSTEM) .............................
19
COMMON ITEM ..................................................... ....19
COMMON ITEM : CONSULT Function (BCM -
COMMON ITEM) .....................................................
19
AIR CONDITIONER ............................................... ....20
AIR CONDITIONER : CONSULT Function (BCM -
AIR CONDITIONER) ........................................... ....
20
ECU DIAGNOSIS INFORMATION ..............21
BCM, ECM, IPDM E/R .......................................21
List of ECU Reference ......................................... ....21
WIRING DIAGRAM ......................................22
MANUAL AIR CONDITIONING SYSTEM .........22
Wiring Diagram .................................................... ....22
BASIC INSPECTION ...................................28
DIAGNOSIS AND REPAIR WORKFLOW ........28
Workflow .............................................................. ....28
OPERATION INSPECTION ..............................30
Work Procedure .......................................................30
DTC/CIRCUIT DIAGNOSIS .........................32
A/C ON SIGNAL ................................................32
Component Function Check ................................ ....32
Diagnosis Procedure ...............................................32
Component Inspection .............................................34
BLOWER FAN ON SIGNAL .............................35
Component Function Check ....................................35
Diagnosis Procedure ...............................................35
DEFROSTER POSITION SIGNAL ....................37
Description ...............................................................37
Component Function Check ....................................37
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HAC-2
Diagnosis Procedure ..............................................37
A/C INDICATOR ................................................39
Diagnosis Procedure ........................................... ...39
FRONT BLOWER MOTOR ................................41
Description ........................................................... ...41
Diagnosis Procedure ..............................................41
Component Inspection (Front Blower Motor) ..........43
Component Inspection (B lower Relay) ...................43
Component Inspection (Front Blower Motor Re-
sistor) ................................................................... ...
43
Component Inspection (Fan Switch) ......................43
MAGNET CLUTCH ............................................45
Description ........................................................... ...45
Component Function Check ...................................45
Diagnosis Procedure ..............................................45
SYMPTOM DIAGNOSIS .............................47
MANUAL AIR CONDITIONING SYSTEM ...... ...47
Symptom Table ................................................... ...47
INSUFFICIENT COOLING .................................48
Description ........................................................... ...48
Diagnosis Procedure ..............................................48
INSUFFICIENT HEATING .................................49
Description ........................................................... ...49
Diagnosis Procedure ..............................................49
COMPRESSOR DOES NOT OPERATE ...........50
Description ........................................................... ...50
Diagnosis Procedure ............................................ ...50
REMOVAL AND INSTALLATION ..............52
FRONT AIR CONTROL .................................. ...52
Exploded View ..................................................... ...52
Removal and Installation .........................................52
THERMO CONTROL AMPLIFIER ................. ...53
Removal and Installation .........................................53
REFRIGERANT PRESSURE SENSOR ......... ...54
Removal and Installation .........................................54
FRONT BLOWER MOTOR RESISTOR ......... ...55
Exploded View ..................................................... ...55
Removal and Installation .........................................55
DOOR CABLE ................................................ ...56
Exploded View ..................................................... ...56
INTAKE DOOR CABLE ......................................... ...56
INTAKE DOOR CABLE : Removal and Installation
...
56
INTAKE DOOR CABLE : Adjustment .................. ...56
MODE DOOR CABLE ............................................ ...57
MODE DOOR CABLE : Removal and Installation ...57
MODE DOOR CABLE : Adjustment ........................57
AIR MIX DOOR CABLE ......................................... ...57
AIR MIX DOOR CABLE : Removal and Installation
...
57
AIR MIX DOOR CABLE : Adjustment .................. ...57
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HAC-4
< PRECAUTION >[MANUAL AIR CONDITIONING]
PRECAUTIONS
• Dip a soft cloth into lukewarm water with mild detergent (concentration: within 2 to 3%) and wipe the dirty
area.
• Then dip a cloth into fresh water, wring the water out of the cloth and wipe the detergent off.
• Then rub with a soft, dry cloth.
- Do not use organic solvent such as thinner, benzene, alcohol or gasoline.
- For genuine leather seats, use a genuine leather seat cleaner.
Precautions For Refrigerant System ServiceINFOID:0000000012430712
GENERAL REFRIGERANT PRECAUTION
WARNING:
• Do not breathe A/C refrigerant and oil vapor or mist. Exposure may irritate eyes, nose and throat.
Use only approved recovery/recycling equipment to discharge HFC-134a (R-134a) refrigerant. Venti-
late work area before resuming service if accidental system discharge occurs. Additional health and
safety information may be obtained fr om refrigerant and oil manufacturers.
• Do not release refrigerant into the air. Use ap proved recovery/recycling recharging equipment to
capture the refrigerant each time an air conditioning system is discharged.
• Wear always eye and hand protection (goggles and gloves) when working with any refrigerant or air
conditioning system.
• Do not store or heat refrigerant containers above 52 °C (126° F).
• Do not heat a refrigerant container with an open fl ame. Place the bottom of the container in a pail of
warm water if container warming is required.
• Do not intentionally drop, puncture, or incinerate refrigerant containers.
• Keep refrigerant away from open flames. Pois onous gas is produced if refrigerant burns.
• Refrigerant displaces oxygen, therefore be certain to work in well ventilated areas to prevent suffo- cation.
• Do not pressure test or leakage test HFC-134a (R- 134a) service equipment and/or vehicle air condi-
tioning systems with compressed air during repair. Some mixtures of air and HFC-134a (R-134a)
have been shown to be combustible at elevated pressures. These mixtures, if ignited, may cause
injury or property damage. Additional health and safety information may be obtained from refriger-
ant manufacturers.
WORKING WITH HFC-134a (R-134a)
CAUTION:
• CFC-12 (R-12) refrigerant and HFC-134a (R-134a) re frigerant are not compatible. These refrigerants
must never be mixed, even in the smallest amount s. Compressor malfunction is likely occur if the
refrigerants are mixed.
• Use only specified oil for the HFC-134a (R-134a) A/C system and HFC-134a (R-134a) components.
Compressor malfunction is likely to occur if oil other than that specified is used.
• The specified HFC-134a (R-134a) oi l rapidly absorbs moisture from the atmosphere. The following
handling precautions must be observed:
- Cap (seal) immediately the component to minimize the entry of mo isture from the atmosphere when
removing refrigerant components from a vehicle.
- Do not remove the caps (unseal) unti l just before connecting the components when installing refrig-
erant components to a vehicle. Connect all refr igerant loop components as quickly as possible to
minimize the entry of moisture into system.
- Use only the specified oil from a sealed container. Reseal immediately containers of oil. Oil becomes
moisture saturated and should no t be used without proper sealing.
- Do not allow oil (A/C System Oil Type: DH-PR) to come in contact with styrene foam parts. Damage
may result.
REFRIGERANT CONNECTION
A new type refrigerant connection has been introduced to al l refrigerant lines except the following location.
• Expansion valve to evaporator
• Refrigerant pressure sensor to liquid tank
WARNING:
Check that all refrigerant is disch arged into the recycling equipment and the pressure in the system is
less than atmospheric pressure. Then gradually loo sen the discharge side hose fitting and remove it.
CAUTION:
Observe the following when replacing or cleaning refrigerant cycle components.
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HAC-10
< SYSTEM DESCRIPTION >[MANUAL AIR CONDITIONING]
COMPONENT PARTS
A. LH side of instrument panel B. Behind center of instrument panel C. Center of instrument panel
No. Component Description
1. BCM The BCM receives the fan ON and A/C ON signals from the front air control and sends a com-
pressor ON request to the ECM.
2. Fuse Block (J/B) Located in the passenger compartment, behind the left lower IP, the Fuse Block (J/B) con-
tains the front blower motor relay and several fuses required for the air conditioner control
system.
3. Blower relay The blower relay controls the flow of current to fuse 20, 21 and 22 in the Fuse Block (J/B).
The relay is connected directly to ground, and is energized when the ignition switch is in the
ON or START position.
4. Front blower motor The front blower motor varies the speed at which the air flows through the ventilation system.
5. Front blower motor resistor Ground for the blower is supplied through blower resistor and the blower speed switch. As
the switch is moved from position 1 through 4, more current is allowed to flow through the
motor, for a higher speed. This is because less resistors are in the path as the switch is
moved to a higher position. When the switch is on the highest position, all resistors are by-
passed.
6. Thermo control amp. Thermo control amp. is composed of thermistor and amplifier. When the A/C switch signal is
received from the front air control, the thermo control amp. transmits the A/C ON signal to the
BCM according to evaporator fin temperature. When the thermistor detecting temperature of
the air that passes through evaporator is extremely low, the thermo control amp. sends the
A/C OFF signal to BCM, and stops the compressor.
7. Front air control The front air control controls the operation of the A/C and heating system.
AWIIA1862ZZ
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HAC-14
< SYSTEM DESCRIPTION >[MANUAL AIR CONDITIONING]
SYSTEM
*: With rear foot duct
AIR DISTRIBUTION
With rear foot duct
1. Intake door
2. Blower motor 3. Evaporator
4. Air mix door 5. Heater core 6. Foot door
7. Ventilator and defroster door Fresh air intake Recirculation air Defroster
Center ventilator Side ventilator
Foot Rear foot
*
Switch/Dial
position Door position
Ventilator and
defroster door
Foot door
Intake door
Air mix door
MODE dial B
A
— —
A – B
A A – B
A – B
A
Air intake lever ——A
B
Temperature control dial Full cold
—A
Full hot B
JMIIA1751ZZ
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MANUAL AIR CONDITIONING SYSTEMHAC-47
< SYMPTOM DIAGNOSIS > [MANUAL AIR CONDITIONING]
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SYMPTOM DIAGNOSIS
MANUAL AIR CONDITIONING SYSTEM
Symptom TableINFOID:0000000012430749
SYMPTOM TABLE
Symptom Reference Page
A/C system does not come on. Go to Trouble Diagnosis Procedure for A/C System. HAC-30
A/C system cannot be controlled.Go to Self-diagnosis Function. HAC-28
Air outlet does not change.Go to Adjustment Procedure for Mode Door. HAC-57
Discharge air temperature does not change. Go to Adjustment Procedure for Air Mix Door. HAC-57
Intake door does not change.Go to Adjustment Procedure for Intake Door. HAC-56
Front blower motor operation is malfunction-
ing.Go to Trouble Diagnosis Procedure for Front Blower Motor.
HAC-41
Magnet clutch does not engage.Go to Trouble Diagnosis Procedure for Magnet Clutch. HAC-45
Insufficient cooling.Go to Trouble Diagnosis Procedure for Insufficient Cooling. HAC-48
Insufficient heating.Go to Trouble Diagnosis Procedure for Insufficient Heating. HAC-49
Noise.Go to Trouble Diagnosis Procedure for Noise. HA-17
A/C switch LED does not illuminate. Go to Trouble Diagnosis Procedure for A/C System. HAC-39
Both high- and low-pressure sides are too
high.Go to Trouble Diagnosis Procedure for Abnormal Pressure.
HA-15
High-pressure side is too high and low pres-
sure side is too low.Go to Trouble Diagnosis Procedure for Abnormal Pressure.
HA-15
High-pressure side is too low and low-pres-
sure side is too high.Go to Trouble Diagnosis Procedure for Abnormal Pressure.
HA-15
Both high- and low-pressure side sometimes
become negative.Go to Trouble Diagnosis Procedure for Abnormal Pressure.
HA-15
Low-pressure side sometimes becomes neg-
ative.Go to Trouble Diagnosis Procedure for Abnormal Pressure.
HA-15
Low-pressure side becomes negative. Go to Trouble Diagnosis Procedure for Abnormal Pressure. HA-15
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INSUFFICIENT HEATINGHAC-49
< SYMPTOM DIAGNOSIS > [MANUAL AIR CONDITIONING]
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INSUFFICIENT HEATING
DescriptionINFOID:0000000012430752
Symptom
• Insufficient heating
• No warm air comes out. (Air flow volume is normal.)
Diagnosis ProcedureINFOID:0000000012430753
NOTE:
Perform self-diagnosis with CONSULT before performing sy mptom diagnosis. If any malfunction result or DTC
is detected, perform the corresponding diagnosis.
1.CHECK COOLING SYSTEM
1. Check engine coolant level and check for leakage. Refer to CO-8, "
Inspection".
2. Check radiator cap. Refer to CO-12, "
RADIATOR CAP : Inspection".
3. Check water flow sounds of the engine coolant. Refer to CO-9, "
Refilling".
Is the inspection result normal?
YES >> GO TO 2.
NO >> Refill engine coolant and repair or replace the parts depending on the inspection results.
2.CHECK HEATER HOSE
Check installation of heater hose by visually or touching.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace parts depending on the inspection results.
3.CHECK HEATER CORE
1. Check temperature of inlet hose and outlet hose of heater core.
2. Check that inlet side of heater core is hot and the outle t side is slightly lower than/almost equal to the inlet
side.
CAUTION:
Always perform the temperature inspection in a sh ort period of time because the engine coolant
temperature is very hot.
Is the inspection result normal?
YES >> GO TO 4.
NO >> Replace heater core. Refer to HA-35, "
HEATER CORE : Removal and Installation".
4.CHECK AIR LEAKAGE FROM EACH DUCT
Check duct and nozzle, etc. of air conditioning system for air leakage.
Is the inspection result normal?
YES >> Check air mix door cable inst allation and air mix door operation.
NO >> Repair or replace parts depending on the inspection results.
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HAC-50
< SYMPTOM DIAGNOSIS >[MANUAL AIR CONDITIONING]
COMPRESSOR DOES NOT OPERATE
COMPRESSOR DOES NOT OPERATE
DescriptionINFOID:0000000012430754
SYMPTOM
Compressor does not operate.
Diagnosis ProcedureINFOID:0000000012430755
NOTE:
• Perform self-diagnosis with CONSULT before performi
ng symptom diagnosis. If any malfunction result or
DTC is detected, perform the corresponding diagnosis.
• Check that refrigerant system is fully charged. If the refrigerant charge is low, perform the inspection for refrigerant leakage
1.CHECK MAGNET CLUTCH OPERATION
Check magnet clutch. Refer to HAC-45, "
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-462, "
Component Function Check".
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace malfunctioning parts.
3.CHECK A/C ON SIGNAL
Check A/C ON signal. Refer to HAC-32, "
Component Function Check".
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair or replace malfunctioning parts.
4.CHECK DEFROSTER POSITION SIGNAL
Check defroster position signal. Refer to HAC-37, "
Component Function Check".
Is the inspection result normal?
YES >> GO TO 5.
NO >> Repair or replace malfunctioning parts.
5.CHECK BLOWER FAN ON SIGNAL
Check blower fan ON signal. Refer to HAC-35, "
Component Function Check".
Is the inspection result normal?
YES >> GO TO 6.
NO >> Repair or replace malfunctioning parts
6.CHECK BCM OUTPUT SIGNAL
With CONSULT
1. Select “Data Monitor” of “ECM”.
2. Select “AIR COND SIG” and “HEATER FAN SW”, and check status under the following conditions.
Is the inspection result normal?
Monitor item Condition Status
AIR COND SIG A/C switchOFF (A/C indicator: OFF)
Off
ON (A/C indicator: ON) On
HEATER FAN SW Blower motor OFF
Off
ON On
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FRONT BLOWER MOTOR RESISTORHAC-55
< REMOVAL AND INSTALLATION > [MANUAL AIR CONDITIONING]
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FRONT BLOWER MOTOR RESISTOR
Exploded ViewINFOID:0000000012430760
Removal and InstallationINFOID:0000000012430761
REMOVAL
1. From under the LH side of the instrment panel, disconnect harness connector from front blower motor
resistor.
2. Remove screws and front blower motor resistor.
INSTALLATION
Installation is in the reverse order of removal.
1. Heating and cooling unit assembly 2. Front blower motor 3. Front blower motor resistor
AWIIA1465ZZ
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HAC-56
< REMOVAL AND INSTALLATION >[MANUAL AIR CONDITIONING]
DOOR CABLE
DOOR CABLE
Exploded ViewINFOID:0000000012430762
INTAKE DOOR CABLE
INTAKE DOOR CABLE : Removal and InstallationINFOID:0000000012430763
The intake door cable is not serviced separately. Refer to
HAC-52, "Removal and Installation".
INTAKE DOOR CABLE : AdjustmentINFOID:0000000012430764
1. Remove glove box assembly. Refer to IP-25, "Removal and Installation".
2. Disconnect intake door cable (1) from clip (A).
3. Set intake door lever to REC position.
4. Push intake door link (2) in the direction shown, then carefully pull outer cable to front air control side and connect clip.
1. Heating and cooling unit assembly 2. Plate 3. Air mix door linkage 2
4. Air mix door linkage 1 5. Air mix door cable6. Intake door lever
7. Intake door linkage 8. Intake door cable9. Foot door lever
10. Mode door cable 11. Main linkage12. Ventilator door rod
13. Ventilator door lever
A. To front air control
JMIIA1742ZZ
JMIIA0617ZZ
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