Nissan Leaf. Manual — part 456
P31A7 CAN ERROR INV/MC
EVB-107
< DTC/CIRCUIT DIAGNOSIS >
D
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A
B
EVB
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P31A7 CAN ERROR INV/MC
DTC Logic
INFOID:0000000010121107
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PERFORM DTC CONFIRMATION PROCEDURE
With CONSULT
1. Power switch ON and wait for 10 seconds or more.
2. Select “Self Diagnostic Result” of “HV BAT”.
3. Check DTC.
Is P31A7 detected?
YES
>> Refer to
EVB-107, "Diagnosis Procedure"
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000010121108
When this DTC is detected, replace traction motor inverter. Refer to
.
DTC
Trouble diagnosis name
DTC detecting condition
Possible causes
P31A7
CAN ERROR INV/MC
If the CAN data from traction motor inverter has not
change from the value which was previously received.
Traction motor inverter
EVB-108
< DTC/CIRCUIT DIAGNOSIS >
P3302-P330D CELL OVER VOLTAGE
P3302-P330D CELL OVER VOLTAGE
DTC Logic
INFOID:0000000010121109
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PERFORM DTC CONFIRMATION PROCEDURE
With CONSULT
1. Power switch ON and wait for 10 seconds or more.
2. Select “Self Diagnostic Result” of “HV BAT”.
3. Check DTC.
Is any DTC detected?
YES
>> Refer to
EVB-108, "Diagnosis Procedure"
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000010121110
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
EVB-7, "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 SELF-DIAGNOSIS RESULTS
With CONSULT
DTC
Trouble diagnosis name
DTC detecting condition
Possible causes
P3302
CELL OVER VOLTAGE MODULE1
When cell voltage exceeds the allowable
working voltage range.
• Overcharge caused by traction
motor inverter/VCM malfunc-
tion
• Module
• Li-ion battery controller
• Bus bar
• Harness or connector
P3303
CELL OVER VOLTAGE MODULE2
P3304
CELL OVER VOLTAGE MODULE3
P3305
CELL OVER VOLTAGE MODULE4
P3306
CELL OVER VOLTAGE MODULE5
P3307
CELL OVER VOLTAGE MODULE6
P3308
CELL OVER VOLTAGE MODULE7
P3309
CELL OVER VOLTAGE MODULE8
P330A
CELL OVER VOLTAGE MODULE9
P330B
CELL OVER VOLTAGE MODULE10
P330C
CELL OVER VOLTAGE MODULE11
P330D
CELL OVER VOLTAGE MODULE12
P3302-P330D CELL OVER VOLTAGE
EVB-109
< DTC/CIRCUIT DIAGNOSIS >
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1. Perform “All DTC Reading” with CONSULT.
2. Check systems other than “HV BAT” if any DTC is detected.
Is any DTC detected?
YES
>> After performing trouble diagnosis of detected DTC, GO TO 2.
NO
>> GO TO 2.
2.
PRECONDITIONING
WARNING:
Disconnect high voltage. Refer to
GI-33, "How to Disconnect High Voltage"
1. Remove Li-ion battery. Refer to
EVB-181, "Removal and Installation"
2. Remove battery pack upper case. Refer to
EVB-191, "BATTERY PACK UPPER CASE : Removal and
.
>> GO TO 3.
3.
CHECK HARNESS BETWEEN MODULE AND LI-ION BATTERY CONTROLLER
1. Disconnect voltage detection terminal of bus bar and Li-ion battery controller harness connector.
2. Refer to below table and check the continuity between Li-ion battery controller and corresponding bus
bar .
JSCIA0812GB
EVB-110
< DTC/CIRCUIT DIAGNOSIS >
P3302-P330D CELL OVER VOLTAGE
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair harness or connector.
4.
CHECK MODULE VOLTAGE
Check voltage of corresponding module. Refer to
EVB-111, "Component Inspection"
.
Is the inspection result normal?
DTC
Module
No.
Bus bar
Li-ion battery controller
Continuity
Connector
Terminal
P3302
1
LB13
33
Existed
50
34
P3303
2
LB13
34
Existed
51
35
P3304
3
LB13
35
Existed
52
36
P3305
4
LB13
36
Existed
53
37
P3306
5
LB13
37
Existed
54
38
P3307
6
LB13
38
Existed
55
39
P3308
7
LB13
39
Existed
56
40
P3309
8
LB13
40
Existed
57
42
P330A
9
LB13
42
Existed
58
43
P330B
10
LB13
43
Existed
59
44
P330C
11
LB13
44
Existed
60
45
P330D
12
LB13
45
Existed
61
46
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