Nissan Leaf. Instruction — part 562
EVC-272
< DTC/CIRCUIT DIAGNOSIS >
P3178 ECU ACTIVATION ERROR
NO
>> Check high voltage harness connector installation condition of Li-ion battery and traction motor
inverter.
![](/vehicle/qul/cap/rldeld/yofin.png)
P3179, P317A, P317B TRACTION MOTOR INVERTER
EVC-273
< DTC/CIRCUIT DIAGNOSIS >
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P3179, P317A, P317B TRACTION MOTOR INVERTER
DTC Logic
INFOID:0000000010120733
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
INSPECTION START
NOTE:
This DTC is displayed when the traction motor inverter detects a DTC. If this DTC is displayed, perform trouble
diagnosis for a DTC that detected by traction motor inverter.
>> Proceed to
EVC-273, "Diagnosis Procedure"
Diagnosis Procedure
INFOID:0000000010120734
Perform the self-diagnosis of traction motor inverter.
DTC
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
Possible cause
P3179
MOTOR SYSTEM
(Motor system)
VCM detects an error signal that is received from traction motor
inverter via CAN communication for 0.01 seconds or more.
Traction motor inverter
P317A
P317B
![](/vehicle/qul/cap/rldeld/meerd.png)
EVC-274
< DTC/CIRCUIT DIAGNOSIS >
P317D TRACTION MOTOR INVERTER
P317D TRACTION MOTOR INVERTER
DTC Logic
INFOID:0000000010120735
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING
• Turn power switch OFF and wait at least 90 seconds.
CAUTION:
During this period, never perform vehicle handling such as opening and closing of doors. If some
kind of vehicle handling is performed, then wait another 90 seconds or more from the time of the
vehicle handling.
• Make sure that 12V battery voltage is 11 V or more.
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE
With CONSULT
1. Set the vehicle to READY and perform test drive.
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
DTC can be reproduced more easily when vehicle speed is higher.
2. Check DTC.
Is DTC detected?
YES
>> Proceed to
EVC-274, "Diagnosis Procedure"
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000010120736
1.
CHECK TRACTION MOTOR TORQUE
With CONSULT
1. On the CONSULT screen, select “EV/HEV” >> “DATA MONITOR” >> “TRG MOTOR TORQ 1” and “CUR-
RENT MOTOR TORQ”.
2. Shift selector lever in P range.
3. Set the vehicle to READY.
4. Check that the difference between values indicated by “TRG MOTOR TORQ 1” and “CURRENT MOTOR
TORQ” is within 20 N·m.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Replace traction motor inverter. Refer to
TMS-103, "Removal and Installation"
.
2.
REPLACE VCM
1. Replace VCM. Refer to
EVC-423, "Removal and Installation"
.
2. Turn power switch ON and erase DTC.
DTC
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
Possible cause
P317D
MOTOR SYSTEM
(Motor system)
• The estimated torque value from the traction motor inverter
to VCM remains greater/smaller than the torque command
value from VCM to the traction motor inverter for the speci-
fied time.
• The difference between the estimated power consumption
calculated based on a torque value from VCM to the traction
motor inverter and the actual power consumption calculated
based on a high voltage battery voltage and current is 54 kW
or more.
• Traction motor inverter
• VCM
P317D TRACTION MOTOR INVERTER
EVC-275
< DTC/CIRCUIT DIAGNOSIS >
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3. Perform DTC confirmation procedure. Refer to
.
Is DTC “P317D” detected again?
YES
>> Replace traction motor inverter. Refer to
TMS-103, "Removal and Installation"
.
NO
>> INSPECTION END
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