Nissan Leaf. Instruction — part 749
HA-118
< REMOVAL AND INSTALLATION >
[WITHOUT HEAT PUMP SYSTEM]
HEATING AND COOLING UNIT ASSEMBLY
1. Use the refrigerant recovery equipment (for HFC134a) and recover the refrigerant. Refer to
2. Remove bolt (A), and then disconnect low-pressure pipe (1) and
high-pressure pipe (2) from expansion valve.
CAUTION:
To prevent the inclusion of foreign matter, use a cap or vinyl
tape to seal off the connection ports of the pipes and expan-
sion valve from the atmosphere.
3. Remove bolts (A), and then remove expansion valve (1).
CAUTION:
To prevent the inclusion of foreign matter, use a cap or vinyl
tape to seal off the connection ports of the expansion valve
and evaporator from the atmosphere.
INSTALLATION
Note the following items, and then install in the reverse order of removal.
CAUTION:
• To prevent degradation in insulation performance, use special electric compressor oil as the com-
pressor oil.
• In order to prevent conventional PAG oil from becoming mixed in, never reuse recovered compres-
sor oil and instead always use new oil. The use of oil including the conventional PAG oil may
degrade the performance of insulation.
• To prevent performance degradation, never use a fluorescent agent in order to detect refrigerant
leakage. Also be careful that a fluorescent agent never enter the oil.
• To prevent leakage of refrigerant, replace the O-ring with a new one. Apply a coat of compressor oil
to the O-ring prior to installation.
• Perform a check for refrigerant leakage when charging with refrigerant. Refer to
.
JMIIA2673ZZ
JPIIA1792ZZ
SERVICE DATA AND SPECIFICATIONS (SDS)
HA-119
< SERVICE DATA AND SPECIFICATIONS (SDS)
[WITHOUT HEAT PUMP SYSTEM]
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SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
Compressor
INFOID:0000000010122185
Lubricant
INFOID:0000000010122186
Refrigerant
INFOID:0000000010122187
Type
Electric drive scroll type (Includes inverter)
Name
AE10 (Exclusive use for electric compressor)
Capacity
m (Imp fl oz)
150 (5.3)
Name
HFC-134a (R-134a)
Capacity
kg (lb)
0.42 (0.93)
HAC-1
VENTILATION, HEATER & AIR CONDITIONER
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HAC
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CONTENTS
HEATER & AIR CONDITIONING CONTROL SYSTEM
AUTO A/C (WITH HEAT PUMP)
PRECAUTION . . . . . . . . . . . ...
PRECAUTIONS . . . . . . . . . . . . ...
Precaution for Technicians Using Medical Electric
. ..
Point to Be Checked Before Starting Maintenance
Work . . . . . . . . . . . . . . . . . . ..
Precaution for Procedure without Cowl Top Cover . ..
High Voltage Precautions . . . . . . . . . . ..
Precaution for Removing 12V Battery . . . . . .
Precautions for Service Work of Cooler System . .
Service Equipment . . . . . . . . . . . . ..
PREPARATION . . . . . . . . . . ...
PREPARATION . . . . . . . . . . . . ..
Commercial Service Tools . . . . . . . . . ..
Special Service Tool . . . . . . . . . . . ...
Oil and Grease . . . . . . . . . . . . . .
SYSTEM DESCRIPTION . . . . . . . .
COMPONENT PARTS . . . . . . . . . ...
AUTOMATIC AIR CONDITIONING SYSTEM . . ...
AUTOMATIC AIR CONDITIONING SYSTEM :
Component Parts Location . . . . . . . . . ..
A/C UNIT ASSEMBLY . . . . . . . . . . . ...
A/C UNIT ASSEMBLY : Aspirator . . . . . . ...
A/C UNIT ASSEMBLY : Intake Sensor . . . . ...
A/C UNIT ASSEMBLY : PTC Heater Outlet Air
Temperature Sensor . . . . . . . . . . . ...
A/C UNIT ASSEMBLY : A/C Unit Case Tempera-
ture Sensor . . . . . . . . . . . . . . . ..
A/C UNIT ASSEMBLY : Air Mix Door Motor . . ...
A/C UNIT ASSEMBLY : Mode Door Motor . . . .
A/C UNIT ASSEMBLY : Intake Door Motor . . . .
A/C UNIT ASSEMBLY : Blower Motor . . . . . .
A/C UNIT ASSEMBLY : Power Transistor . . . ...
A/C Auto Amp. . . . . . . . . . . . . . . .
Ambient Sensor . . . . . . . . . . . . . ...
In-Vehicle Sensor . . . . . . . . . . . . .
Sunload Sensor . . . . . . . . . . . . . ...
Refrigerant Pressure Sensor . . . . . . . . ...
Electric Compressor . . . . . . . . . . . .
PTC Heater . . . . . . . . . . . . . . . ..
Heat Pump Control Unit . . . . . . . . . . ...
Compressor Discharge Refrigerant Temperature
Sensor . . . . . . . . . . . . . . . . . .
Compressor Suction Refrigerant Temperature
Sensor . . . . . . . . . . . . . . . . . .
Refrigerant Channel Switching 2 Way Type Valve .
Refrigerant Channel Switching 3 Way Type Valve .
SYSTEM . . . . . . . . . . . . . . .
AUTOMATIC AIR CONDITIONING SYSTEM . . ...
AUTOMATIC AIR CONDITIONING SYSTEM :
System Description . . . . . . . . . . . . ..
AUTOMATIC AIR CONDITIONING SYSTEM :
Temperature Control . . . . . . . . . . . ...
AUTOMATIC AIR CONDITIONING SYSTEM : Air
Outlet Control . . . . . . . . . . . . . . ..
AUTOMATIC AIR CONDITIONING SYSTEM : Air
Flow Control . . . . . . . . . . . . . . .
AUTOMATIC AIR CONDITIONING SYSTEM : Air
Inlet Control . . . . . . . . . . . . . . . .
AUTOMATIC AIR CONDITIONING SYSTEM :
Electric Power Distribution Control . . . . . . ..
AUTOMATIC AIR CONDITIONING SYSTEM :
Compressor Control . . . . . . . . . . . .
AUTOMATIC AIR CONDITIONING SYSTEM :
Door Control . . . . . . . . . . . . . . .
AUTOMATIC AIR CONDITIONING SYSTEM :
PTC Heater Control . . . . . . . . . . . . .
AUTOMATIC AIR CONDITIONING SYSTEM :
ECO Mode Control . . . . . . . . . . . . ..
HAC-2
AUTOMATIC AIR CONDITIONING SYSTEM :
Heat Pump System Control . . . . . . . . ....
AUTOMATIC AIR CONDITIONING SYSTEM : A/
C-Heater Timer (Climate Ctrl. Timer) . . . . . ..
AUTOMATIC AIR CONDITIONING SYSTEM :
Remote Climate Control . . . . . . . . . . .
AUTOMATIC AIR CONDITIONING SYSTEM :
Door Motor Starting Position Reset . . . . . ....
AUTOMATIC AIR CONDITIONING SYSTEM :
Fail-safe . . . . . . . . . . . . . . . . ..
OPERATION . . . . . . . . . . . . . ..
Description . . . . . . . . . . . . . . . ..
Switch Name and Function . . . . . . . . . .
DIAGNOSIS SYSTEM (A/C AUTO AMP.) . . .
Description . . . . . . . . . . . . . . . ..
CONSULT Function . . . . . . . . . . . ....
ECU DIAGNOSIS INFORMATION . . . ..
A/C AUTO AMP. . . . . . . . . . . . .
Reference Value . . . . . . . . . . . . . .
Fail-safe . . . . . . . . . . . . . . . . ..
DTC Index . . . . . . . . . . . . . . . ..
HEAT PUMP CONTROL UNIT . . . . . . ..
Reference Value . . . . . . . . . . . . . .
WIRING DIAGRAM . . . . . . . . . .
AUTOMATIC AIR CONDITIONING SYSTEM ...
Wiring Diagram . . . . . . . . . . . . . ...
BASIC INSPECTION . . . . . . . . ...
DIAGNOSIS AND REPAIR WORK FLOW . .
Work Flow . . . . . . . . . . . . . . . ...
OPERATION INSPECTION . . . . . . . ...
Work Procedure . . . . . . . . . . . . . ..
ADDITIONAL SERVICE WHEN REPLACING
CONTROL UNIT (A/C AUTO AMP.) . . . . .
Description . . . . . . . . . . . . . . . ..
Work Procedure . . . . . . . . . . . . . ..
CONFIGURATION (HVAC) . . . . . . . ...
Description . . . . . . . . . . . . . . . ..
Work Procedure . . . . . . . . . . . . . ..
Configuration List . . . . . . . . . . . . ....
SYSTEM SETTING . . . . . . . . . . .
Temperature Setting Trimmer . . . . . . . ....
Inlet Port Memory Function (REC) . . . . . . .
Inlet Port Memory Function (FRE) . . . . . . ..
Foot Position Setting Trimmer . . . . . . . ....
Compressor Operation Setting at Defroster Mode
(Timer/Remote Climate Control) . . . . . . . .
Setting of Compressor Maximum Rotation Speed
During Pre Air Conditioning . . . . . . . . ....
Setting of Compressor Maximum Rotation Speed
During Idling . . . . . . . . . . . . . . .
DOOR MOTOR STARTING POSITION RE-
SET . . . . . . . . . . . . . . . . .
Description . . . . . . . . . . . . . . . ..
Work Procedure . . . . . . . . . . . . . ..
DTC/CIRCUIT DIAGNOSIS . . . . . .
U1000 CAN COMM CIRCUIT . . . . . . .
Description . . . . . . . . . . . . . . . ..
DTC Logic . . . . . . . . . . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ...
U1010 CONTROL UNIT (CAN) . . . . . . .
Description . . . . . . . . . . . . . . . ..
DTC Logic . . . . . . . . . . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ...
B2578, B2579 IN-VEHICLE SENSOR . . . ..
DTC Logic . . . . . . . . . . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ...
Component Inspection . . . . . . . . . . .
B257B, B257C AMBIENT SENSOR . . . . .
DTC Logic . . . . . . . . . . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ...
Component Inspection . . . . . . . . . . .
B2581, B2582 INTAKE SENSOR . . . . . .
DTC Logic . . . . . . . . . . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ...
Component Inspection . . . . . . . . . . .
B2630, B2631 SUNLOAD SENSOR . . . . .
DTC Logic . . . . . . . . . . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ...
B2770, B2773, B2774 PTC HEATER . . . ..
DTC Logic . . . . . . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
B2771 PTC HEATER . . . . . . . . . .
DTC Logic . . . . . . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
B2772 PTC HEATER . . . . . . . . . .
DTC Logic . . . . . . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
B2777, B2779, B277B PTC HEATER . . . ..
DTC Logic . . . . . . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
B27A0, B27A1 INTAKE DOOR MOTOR . . .
DTC Logic . . . . . . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
Component Inspection (PBR) . . . . . . . ...
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