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Nissan Leaf. Manual - part 720

HA-2

NOISE ................................................................

Symptom Table ......................................................

REMOVAL AND INSTALLATION ...............

ELECTRIC COMPRESSOR ..............................

Exploded View ........................................................

Removal and Installation ........................................

Inspection ...............................................................

COOLER PIPE AND HOSE ...............................

Exploded View ........................................................

HIGH-PRESSURE FLEXIBLE HOSE .......................

HIGH-PRESSURE FLEXIBLE HOSE : Removal
and Installation .......................................................

LOW-PRESSURE FLEXIBLE HOSE ........................

LOW-PRESSURE FLEXIBLE HOSE : Removal
and Installation .......................................................

HIGH-PRESSURE PIPE ............................................

HIGH-PRESSURE PIPE : Removal and Installa-
tion ..........................................................................

2-WAY VALVE AND 3-WAY VALVE ASSEMBLY ...

2-WAY VALVE AND 3-WAY VALVE ASSEMBLY
: Removal and Installation ......................................

ACCUMULATOR ASSEMBLY .................................

ACCUMULATOR ASSEMBLY : Removal and In-
stallation .................................................................

CONDENSER ....................................................

Exploded View ........................................................

Removal and Installation ........................................

HEATING AND COOLING UNIT ASSEMBLY ...

Exploded View ........................................................

HEATING AND COOLING UNIT ASSEMBLY ..........

HEATING AND COOLING UNIT ASSEMBLY :
Removal and Installation ........................................

EVAPORATOR .........................................................

EVAPORATOR : Removal and Installation ............

INNER CONDENSER ................................................

INNER CONDENSER : Removal and Installation ...

SERVICE DATA AND SPECIFICATIONS
(SDS) ...........................................................

SERVICE DATA AND SPECIFICATIONS
(SDS) ..................................................................

Compressor ............................................................

Lubricant .................................................................

Refrigerant ..............................................................

WITHOUT HEAT PUMP SYSTEM

PRECAUTION .............................................

PRECAUTIONS .................................................

Precaution for Technicians Using Medical Electric ...

Point to Be Checked Before Starting Maintenance
Work ........................................................................

Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" .................................................................

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 ......................................

Oil and Grease ........................................................

SYSTEM DESCRIPTION ...........................

COMPONENT PARTS .......................................

REFRIGERATION SYSTEM .....................................

REFRIGERATION SYSTEM : Component Parts
Location ..................................................................

HEATING AND COOLING UNIT ASSEMBLY ..........

HEATING AND COOLING UNIT ASSEMBLY :
Heating and Cooling Unit Assembly .......................

HEATING AND COOLING UNIT ASSEMBLY :
Evaporator ..............................................................

HEATING AND COOLING UNIT ASSEMBLY :
Expansion Valve .....................................................

CONDENSER ............................................................

CONDENSER : Condenser ....................................

CONDENSER : Liquid Tank ...................................

Electric Compressor ................................................

Refrigerant and Compressor Oil .............................

High Voltage Warning Label ...................................

SYSTEM ............................................................

REFRIGERATION SYSTEM .....................................

REFRIGERATION SYSTEM : System Diagram .....

REFRIGERATION SYSTEM : System Description

...

BASIC INSPECTION ..................................

DIAGNOSIS AND REPAIR WORK FLOW ........

Workflow .................................................................

REFRIGERANT .................................................

Description ..............................................................

Check Refrigerant Leakage ....................................

Recycle Refrigerant ................................................

Charge Refrigerant .................................................

LUBRICANT ......................................................

Description ..............................................................

Inspection ................................................................

HA-3

Perform Lubricant Return Operation .......................

Lubricant Adjusting Procedure for Components
Replacement Except Compressor ..........................

Lubricant Adjusting Procedure for Compressor
Replacement ...........................................................

PERFORMANCE TEST ......................................

Inspection ................................................................

SYMPTOM DIAGNOSIS ..............................

REFRIGERATION SYSTEM SYMPTOMS .........

Trouble Diagnosis For Unusual Pressure ...............

Symptom Table .......................................................

NOISE .................................................................

Symptom Table .......................................................

REMOVAL AND INSTALLATION ...............

ELECTRIC COMPRESSOR ...............................

Exploded View ........................................................

Removal and Installation .........................................

Inspection ..............................................................

100

COOLER PIPE AND HOSE .............................

101

Exploded View ......................................................

101

HIGH-PRESSURE FLEXIBLE HOSE ......................

101

HIGH-PRESSURE FLEXIBLE HOSE : Removal
and Installation ......................................................

101

LOW-PRESSURE FLEXIBLE HOSE ......................

103

LOW-PRESSURE FLEXIBLE HOSE : Removal
and Installation ......................................................

103

HIGH-PRESSURE PIPE ..........................................

104

HIGH-PRESSURE PIPE : Removal and Installa-
tion ........................................................................

104

LOW-PRESSURE PIPE ...........................................

105

LOW-PRESSURE PIPE : Removal and Installa-
tion .........................................................................

105

CONDENSER ..................................................

107

Exploded View .......................................................

107

CONDENSER ...........................................................

107

CONDENSER : Removal and Installation .............

107

LIQUID TANK ..........................................................

109

LIQUID TANK : Removal and Installation ..............

110

REFRIGERANT PRESSURE SENSOR ...................

111

REFRIGERANT PRESSURE SENSOR : Remov-
al and Installation ...................................................

111

HEATING AND COOLING UNIT ASSEMBLY .

112

Exploded View .......................................................

112

HEATING AND COOLING UNIT ASSEMBLY ........

114

HEATING AND COOLING UNIT ASSEMBLY :
Removal and Installation .......................................

114

EVAPORATOR ........................................................

117

EVAPORATOR : Removal and Installation ...........

117

EXPANSION VALVE ...............................................

117

EXPANSION VALVE : Removal and Installation ...

117

SERVICE DATA AND SPECIFICATIONS
(SDS) ..........................................................

119

SERVICE DATA AND SPECIFICATIONS
(SDS) ...............................................................

119

Compressor ...........................................................

119

Lubricant ................................................................

119

Refrigerant .............................................................

119

HA-4

< PRECAUTION >

[WITH HEAT PUMP SYSTEM]

PRECAUTIONS

PRECAUTION

PRECAUTIONS

Precaution for Technicians Using Medical Electric

INFOID:0000000010122078

OPERATION PROHIBITION

WARNING:

• Parts with strong magnet is used in this vehicle.

• Technicians using a medical electric device such as pacemaker must never perform operation on the

vehicle, as magnetic field can affect the device function by approaching to such parts.

NORMAL CHARGE PRECAUTION

WARNING:

• If a technician uses a medical electric device such as an implantable cardiac pacemaker or an

implantable cardioverter defibrillator, the possible effects on the devices must be checked with the

device manufacturer before starting the charge operation.

• As radiated electromagnetic wave generated by PDM (Power Delivery Module) at normal charge

operation may affect medical electric devices, a technician using a medical electric device such as

implantable cardiac pacemaker or an implantable cardioverter defibrillator must not approach motor

room [PDM (Power Delivery Module)] at the hood-opened condition during normal charge operation.

PRECAUTION AT TELEMATICS SYSTEM OPERATION

WARNING:

• If a technician uses implantable cardiac pacemaker or implantable cardioverter defibrillator (ICD),

avoid the device implanted part from approaching within approximately 220 mm (8.66 in) from inte-

rior/exterior antenna.

• The electromagnetic wave of TCU might affect the function of the implantable cardiac pacemaker or

the implantable cardioverter defibrillator (ICD), when using the service, etc.

• If a technician uses other medical electric devices than implantable cardiac pacemaker or implant-

able cardioverter defibrillator (ICD), the electromagnetic wave of TCU might affect the function of the

device. The possible effects on the devices must be checked with the device manufacturer before

TCU use.

PRECAUTION AT INTELLIGENT KEY SYSTEM OPERATION

WARNING:

• If a technician uses implantable cardiac pacemaker or implantable cardioverter defibrillator (ICD),

avoid the device implanted part from approaching within approximately 220 mm (8.66 in) from inte-

rior/exterior antenna.

• The electromagnetic wave of Intelligent Key might affect the function of the implantable cardiac

pacemaker or the implantable cardioverter defibrillator (ICD), at door operation, at each request

switch operation, or at engine starting.

• If a technician uses other medical electric devices than implantable cardiac pacemaker or implant-

able cardioverter defibrillator (ICD), the electromagnetic wave of Intelligent Key might affect the

function of the device. The possible effects on the devices must be checked with the device manu-

facturer before Intelligent Key use.

Point to Be Checked Before Starting Maintenance Work

INFOID:0000000010122079

The high voltage system may starts automatically. It is required to check that the timer air conditioner

and timer charge (during EVSE connection) are not set before starting maintenance work.

NOTE:

If the timer air conditioner or timer charge (during EVSE connection) is set, the high voltage system starts

automatically even when the power switch is in OFF state.

Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"

INFOID:0000000010122080

The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along

with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain

types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS

PRECAUTIONS

HA-5

< PRECAUTION >

[WITH HEAT PUMP SYSTEM]

system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front

air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.

Information necessary to service the system safely is included in the SR and SB section of this Service Man-

ual.

WARNING:

• To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in

the event of a collision which would result in air bag inflation, all maintenance must be performed by

an authorized NISSAN/INFINITI dealer.

• Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal

injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag

Module, see the SR section.

• Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this

Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or har-

ness connectors.

PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS

WARNING:

• When working near the Airbag Diagnosis Sensor Unit or other Airbag System sensors with the Igni-

tion ON or engine running, DO NOT use air or electric power tools or strike near the sensor(s) with a

hammer. Heavy vibration could activate the sensor(s) and deploy the air bag(s), possibly causing

serious injury.

• When using air or electric power tools or hammers, always switch the Ignition OFF, disconnect the

battery and wait at least three minutes before performing any service.

Precaution for Procedure without Cowl Top Cover

INFOID:0000000010122081

When performing the procedure after removing cowl top cover, cover

the lower end of windshield with urethane, etc to prevent damage to

windshield.

High Voltage Precautions

INFOID:0000000010122082

DANGER:

Since hybrid vehicles and electric vehicles contain a high voltage battery, there is the risk of

electric shock, electric leakage, or similar accidents if the high voltage component and vehicle are

handled incorrectly. Be sure to follow the correct work procedures when performing inspection and

maintenance.

WARNING:

• Be sure to remove the service plug in order to disconnect the high voltage circuits before perform-

ing inspection or maintenance of high voltage system harnesses and parts.

• The removed service plug must always be carried in a pocket of the responsible worker or placed in

the tool box during the procedure to prevent the plug from being connected by mistake.

• Be sure to wear insulated protective equipment before beginning work on the high voltage system.

• Never allow workers other than the responsible person to touch the vehicle containing high voltage

parts. To keep others from touching the high voltage parts, these parts must be covered with an insu-

lating sheet except when using them.

CAUTION:

Never bring the vehicle into the READY status with the service plug removed unless otherwise

instructed in the Service Manual. A malfunction may occur if this is not observed.

HIGH VOLTAGE HARNESS AND EQUIPMENT IDENTIFICATION

PIIB3706J

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