Nissan Leaf. Manual — part 1199
P3241 DRIVE MOTOR A INVERTER CRNT CONT
TMS-77
< DTC/CIRCUIT DIAGNOSIS >
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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.
2.
CHECK THE CONNECTION CONDITIONS OF THE 3-PHASE BUS BAR
Remove bus bar cover from traction motor and check the tightness of the 3-phase bus bar. Refer to
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Tighten the 3-phase bus bar to the specified torque. Refer to
3.
CHECK DISCONNECTION TRACTION MOTOR STATOR COIL
1. Remove the traction motor inverter. Refer to
TMS-103, "Removal and Installation"
2. Check stator coil for open circuit from the opening of the traction motor 3-phase bus bar.
Is the inspection result normal?
YES
>> Replace the traction motor inverter. Refer to
TMS-103, "Removal and Installation"
.
NO
>> Replace the traction motor. Refer to
TMS-109, "Removal and Installation"
Standard
: 5 V or less
JPCIA0296ZZ
3-phase bus bar
Resistance
Terminal
U-phase
V-phase
1
Ω or less
V-phase
W-phase
W-phase
U-phase
TMS-78
< DTC/CIRCUIT DIAGNOSIS >
P3242 D-MOTOR A PHASE U CURRENT SEN
P3242 D-MOTOR A PHASE U CURRENT SEN
DTC Logic
INFOID:0000000010120976
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 10 seconds or more.
2. Check DTC.
Is “P3242” 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:0000000010120977
1.
REPLACE TRACTION MOTOR INVERTER
Replace the traction motor inverter. Refer to
TMS-103, "Removal and Installation"
.
>> END
DTC
CONSULT screen terms
(Trouble diagnosis content)
Malfunction detected condition
Possible cause
P3242
D-MOTOR A PHASE U CURRENT SEN 2
(Drive Motor “A” Phase U Current Sensor
Circuit)
Abnormal detection value of the traction
motor U-phase current sensor 2
Traction motor inverter
P3243 D-MOTOR A PHASE V CURRENT SEN
TMS-79
< DTC/CIRCUIT DIAGNOSIS >
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P3243 D-MOTOR A PHASE V CURRENT SEN
DTC Logic
INFOID:0000000010120978
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 10 seconds or more.
2. Check DTC.
Is “P3243” 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:0000000010120979
1.
REPLACE TRACTION MOTOR INVERTER
Replace the traction motor inverter. Refer to
TMS-103, "Removal and Installation"
.
>> END
DTC
CONSULT screen terms
(Trouble diagnosis content)
Malfunction detected condition
Possible cause
P3243
D-MOTOR A PHASE V CURRENT SEN 2
(Drive Motor “A” Phase V Current Sensor
Circuit)
Abnormal detection value of the traction
motor V-phase current sensor 2
Traction motor inverter
TMS-80
< DTC/CIRCUIT DIAGNOSIS >
P3244 DRIVE MOTOR A INVERTER
P3244 DRIVE MOTOR A INVERTER
DTC Logic
INFOID:0000000010120980
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
CAUTION:
Always drive vehicle at a safe speed.
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. Set the vehicle to READY and wait for 15 seconds or more.
2. Accelerate to 60 km/h (37 MPH).
3. Stop the vehicle.
4. Check DTC.
Is “P3244” 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:0000000010120981
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 Service Manual. A malfunction may occur if this is not observed.
1.
CHECK DTC HIGH VOLTAGE SYSTEMS
DTC
CONSULT screen terms
(Trouble diagnosis content)
Malfunction detected condition
Possible causes
P3244
DRIVE MOTOR A INVERTER
(Drive Motor “A” Inverter Volt-
age Sensor Performance)
High voltage detection value of Li-ion battery
controller differs largely from that of traction
motor inverter for 10 consecutive seconds or
more
• Traction motor inverter
• High voltage harness or connector
• Li-ion battery
• High voltage parts except for trac-
tion motor inverter
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