Nissan Leaf. Manual — part 1205
TRACTION MOTOR INVERTER INSULATION RESISTANCE CHECK
TMS-101
< DTC/CIRCUIT DIAGNOSIS >
D
E
F
G
H
I
J
K
L
M
A
B
TMS
N
O
P
2.
CHECK TRACTION MOTOR INVERTER INSULATION RESISTANCE
WARNING:
Unlike the ordinary tester, the insulation resistance tester applies 500 V when measuring. If used
incorrectly, there is the danger of electric shock. If used in the vehicle 12V system, there is the danger
of damage to electronic devices. Read the insulation resistance tester instruction manual carefully
and be sure to work safely.
1. Remove the traction motor inverter. Refer to
TMS-103, "Removal and Installation"
2. Use 500V range of insulation resistance tester to measure insulation resistance. Wait for 30 seconds until
the value becomes stable.
CAUTION:
Be sure to set the insulation resistance tester to 500 V when performing this test. Using a setting
higher than 500 V can result in damage to the component being inspected.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace the traction motor inverter. Refer to
.
Traction motor inverter
Ground
Resistance
Item
Terminal
High voltage bus bar
50
Traction motor in-
verter case
14 M
Ω or more
51
3-phase bus bar
U-phase
V-phase
W-phase
JSCIA0669ZZ
TMS-102
< SYMPTOM DIAGNOSIS >
ELECTROMAGNETIC SOUND IS AUDIBLE
SYMPTOM DIAGNOSIS
ELECTROMAGNETIC SOUND IS AUDIBLE
DESCRIPTION
INFOID:0000000010121012
The electromagnetic noise of the traction motor may become more noticeable when accelerating on a steep
slope (large output torque).
This occurs when the IGBT switching frequency is lowered by the traction motor inverter due to high tempera-
ture of the IGBT inside the traction motor inverter. This does not indicate a problem with the traction motor
inverter characteristics or control.
This phenomenon is one of the protective controls. Refer to
TRACTION MOTOR INVERTER
TMS-103
< REMOVAL AND INSTALLATION >
D
E
F
G
H
I
J
K
L
M
A
B
TMS
N
O
P
REMOVAL AND INSTALLATION
TRACTION MOTOR INVERTER
Exploded View
INFOID:0000000010121013
Removal and Installation
INFOID:0000000010121014
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.
PDM (Power Delivery Module)
Traction motor inverter
Gasket
3-phase bus bar cover
High voltage warning label
Traction motor and reduction gear
Seal
Bracket
Sound insulating board
: Vehicle front
: Always replace after every disassembly.
: N·m (kg-m, ft-lb)
: Apply lithium-based grease including molybdenum disulphide.
JSCIA0661GB
TMS-104
< REMOVAL AND INSTALLATION >
TRACTION MOTOR INVERTER
• 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
TMS-5, "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.
REMOVAL
WARNING:
Disconnect the high voltage. 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 remove the Li-ion battery under covers. Refer to
b. Disconnect high voltage harness connector and PTC heater harness connector from front side of Li-ion
battery. Refer to
EVB-181, "Removal and Installation"
.
c.
Measure voltage between high voltage harness connector terminals and PTC heater harness connector
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. Remove the PDM (Power Delivery Module). Refer to
VC-112, "Removal and Installation"
3. Remove the water hose between traction motor inverter and
traction motor.
WARNING:
To prevent electric shock hazards, be sure to put on insulat-
ing protective gear before beginning work on the high volt-
age system.
Standard
: 5 V or less
JPCIA0296ZZ
ALCIA0122ZZ
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст