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
.
Compressor body
Loosened compressor mounting bolts.
Check bolts for tightness.
Refer to
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
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
b. Disconnect high voltage connector from front side of Li-ion battery. Refer to
.
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.
.
3. Remove radiator upper grille. Refer to
DLK-165, "RADIATOR UPPER GRILLE : Removal and Installa-
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
JSCIA0167ZZ
JMIIA2669ZZ
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