Nissan Leaf. Manual - part 743

HA-94

< SYMPTOM DIAGNOSIS >

[WITHOUT HEAT PUMP SYSTEM]

NOISE

NOISE

Symptom Table

INFOID:0000000010122168

Symptom

Noise source

Probable cause

Corrective action

Unusual noise from compressor 
when A/C is ON.

Inside of compressor

Wear, breakage, or clogging of foreign 
material in inner parts.

Check compressor oil. Re-
fer to 

HA-87, "Inspection"

.

Compressor body

Loosened compressor mounting bolts.

Check bolts for tightness. 
Refer to 

HA-95, "Exploded 

View"

.

Unusual noise from cooler piping.

Cooler piping (pipe and 
flexible hose)

Improper installation of clip and brack-
et.

Check the installation condi-
tion of the cooler piping. Re-
fer to 

HA-101, "Exploded 

View"

.

Unusual noise from expansion 
valve when A/C is ON.

Expansion valve

Shortage of refrigerant.

• Check for leakage.
• Collect all refrigerant, 

evacuate refrigerant cycle 
again, and then refill it 
with the specified amount 
of refrigerant.

Wear, breakage, or clogging of foreign 
material in inner parts.

Eliminate foreign material 
from expansion valve, or re-
place it.

ELECTRIC COMPRESSOR

HA-95

< REMOVAL AND INSTALLATION >

[WITHOUT HEAT PUMP SYSTEM]

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REMOVAL AND INSTALLATION

ELECTRIC COMPRESSOR

Exploded View

INFOID:0000000010122169

Removal and Installation

INFOID:0000000010122170

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 insulating protective equipment consisting of glove, shoes, face shield and glasses

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. Refer to 

GI-34, "High Voltage Precautions"

.

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.

1.

Low-pressure flexible hose

2.

O-ring

3.

Electric compressor

4.

Bolts

5.

High voltage warning label

6.

Compressor stay

7.

O-ring

8.

High-pressure flexible hose

A.

To evaporator

B.

To condenser

JMIIA2637GB

HA-96

< REMOVAL AND INSTALLATION >

[WITHOUT HEAT PUMP SYSTEM]

ELECTRIC COMPRESSOR

REMOVAL

WARNING:

Disconnect high voltage circuit. Refer to 

GI-33, "How to Disconnect High Voltage"

.

1. Check voltage in high voltage circuit. (Check that condenser are discharged.)
a. Lift up the vehicle, and then remove Li-ion battery under covers. Refer to 

EVB-181, "Exploded View"

.

b. Disconnect high voltage connector from front side of Li-ion battery. Refer to 

EVB-181, "Removal and

Installation"

.

c.

Measure voltage between high voltage harness terminals.

DANGER:

 

Touching high voltage components without using the appropriate protective equipment will

cause electrocution.

CAUTION:

For voltage measurements, use a tester which can measure to 500 V or higher.

2. Use the refrigerant recovery equipment (for HFC134a) and recover the refrigerant. 

HA-85, "Recycle

Refrigerant"

.

3. Remove radiator upper grille. Refer to 

DLK-165, "RADIATOR UPPER GRILLE : Removal and Installa-

tion"

.

4. Remove nut (A) and disconnect low-pressure flexible hose from

electric compressor.

WARNING:

 

To prevent electric shock hazards, be sure to wear

protective gear.

CAUTION:

• Cover the low pressure port of the electric compressor

with a cap to prevent oil from spilling.

• To prevent the inclusion of foreign matter, use a cap or vinyl tape to seal off the pipe connection

port from the atmosphere.

Standard

: 5 V or less 

JPCIA0296ZZ

JMIIA2668ZZ

ELECTRIC COMPRESSOR

HA-97

< REMOVAL AND INSTALLATION >

[WITHOUT HEAT PUMP SYSTEM]

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5. Remove nut (A) and disconnect high-pressure flexible hose from

electric compressor. 

WARNING:

 

To prevent electric shock hazards, be sure to wear

protective gear.

CAUTION:

• Cover the high pressure port of the electric compressor

with a cap to prevent oil from spilling.

• To prevent the inclusion of foreign matter, use a cap or vinyl tape to seal off the pipe connection

port from the atmosphere.

6. Disconnect quick charge port connectors (1) inside motor room.

WARNING:

•  

To prevent electric shock hazards, be sure to wear

protective gear.

• To prevent electric shock hazards, immediately wrap insu-

lating tape around disconnected high voltage connector

terminals.

7. Disconnect normal charge port connector (1) inside motor room.

WARNING:

•  

To prevent electric shock hazards, be sure to wear

protective gear.

• To prevent electric shock hazards, immediately wrap insu-

lating tape around disconnected high voltage connector

terminals.

8. Move the water hose to a position where it will not interfere with work.
9. Remove front under cover. Refer to 

EXT-23, "FRONT UNDER COVER : Removal and Installation"

.

10. Remove front wheel and tire (RH). Refer to 

WT-45, "Removal and Installation"

.

11. Remove fender protector. Refer to 

EXT-21, "FENDER PROTECTOR : Removal and Installation"

.

12. Remove bolts (A), and then remove compressor stay (1).

JMIIA2670ZZ

: Vehicle front

JSCIA0164ZZ

: Vehicle front

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JMIIA2669ZZ