Nissan Leaf. Instruction — part 1204
U1000 CAN COMM CIRCUIT
TMS-97
< DTC/CIRCUIT DIAGNOSIS >
D
E
F
G
H
I
J
K
L
M
A
B
TMS
N
O
P
U1000 CAN COMM CIRCUIT
Description
INFOID:0000000010121007
CAN (Controller Area Network) is a serial communication line for real-time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent malfunction detection abil-
ity.Many electronic control units are equipped onto a vehicle, and each control unit shares information and
linkswith other control units during operation (not independently). In CAN communication, control units are
connected with 2 communication lines (CAN-H line, CAN-L line) allowing a high rate of information transmis-
sion with less wiring. Each control unit transmits/receives data but selectively reads required data only.
DTC Logic
INFOID:0000000010121008
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING
If “DTC CONFIRMATION PROCEDURE” has been previously conducted, always power switch OFF and wait
at least 10 seconds before conducting the next test.
>> GO TO 2.
2.
CHECK DTC DETECTION
With CONSULT
1. Power switch ON and wait for 5 seconds or more.
2. Check DTC.
Is “U1000” detected?
YES
>> Go to
.
NO-1 >> To check malfunction symptom before repair: Refer to
GI-53, "Intermittent Incident"
NO-2 >> Confirmation after repair: INSPECTION END
Diagnosis Procedure
INFOID:0000000010121009
For the diagnosis procedure, refer to
LAN-17, "Trouble Diagnosis Flow Chart"
DTC
CONSULT screen terms
(Trouble diagnosis content)
Malfunction detected condition
Possible causes
U1000
CAN COMM CIRCUIT
(CAN communication line)
If CAN communications signals continu-
ously for 2 seconds or more cannot be
transmitted
Harness or connectors
(CAN communication line is open or short-
ed.)
TMS-98
< DTC/CIRCUIT DIAGNOSIS >
TRACTION MOTOR INSULATION RESISTANCE CHECK
TRACTION MOTOR INSULATION RESISTANCE CHECK
Component Inspection
INFOID:0000000010121010
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
TMS-5, "High Voltage Precautions"
.
CAUTION:
Never bring the vehicle into the READY status with the service plug removed unless otherwise
instructed in the Instruction. A malfunction may occur if this is not observed.
1.
PRECONDITIONING
WARNING:
Disconnect the high voltage. Refer to
GI-33, "How to Disconnect High Voltage"
Check voltage in high voltage circuit. (Check that condenser are discharged.)
1. Lift up the vehicle and remove the Li-ion battery under covers. Refer to
2. Disconnect high voltage harness connector and PTC heater harness connector from front side of Li-ion
battery. Refer to
EVB-181, "Removal and Installation"
.
3. 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.
>> GO TO 2.
Standard
: 5 V or less
JPCIA0296ZZ
TRACTION MOTOR INSULATION RESISTANCE CHECK
TMS-99
< DTC/CIRCUIT DIAGNOSIS >
D
E
F
G
H
I
J
K
L
M
A
B
TMS
N
O
P
2.
CHECK TRACTION MOTOR 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 instruction carefully
and be sure to work safely.
1. Remove the traction motor. Refer to
TMS-109, "Removal and Installation"
.
2. Use 500V range of insulation resistance tester to measure insu-
lation 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.
NOTE:
As each bus bar (U-phase, V-phase, and W-phase) contacts to
each other inside the traction motor, check resistance of a
phase.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace the traction motor. Refer to
TMS-109, "Removal and Installation"
3-phase bus bar
Ground
Resistance
Terminal
U-phase
Traction motor case
10 M
Ω or more
V-phase
W-phase
JSCIA0668ZZ
TMS-100
< DTC/CIRCUIT DIAGNOSIS >
TRACTION MOTOR INVERTER INSULATION RESISTANCE CHECK
TRACTION MOTOR INVERTER INSULATION RESISTANCE CHECK
Component Inspection
INFOID:0000000010121011
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
TMS-5, "High Voltage Precautions"
.
CAUTION:
Never bring the vehicle into the READY status with the service plug removed unless otherwise
instructed in the Instruction. A malfunction may occur if this is not observed.
1.
PRECONDITIONING
WARNING:
Disconnect the high voltage. Refer to
GI-33, "How to Disconnect High Voltage"
Check voltage in high voltage circuit. (Check that condenser are discharged.)
1. Lift up the vehicle and remove the Li-ion battery under covers. Refer to
2. Disconnect high voltage harness connector and PTC heater harness connector from front side of Li-ion
battery. Refer to
EVB-181, "Removal and Installation"
.
3. 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.
>> GO TO 2.
Standard
: 5 V or less
JPCIA0296ZZ
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст