Nissan Leaf. Manual - part 462

P338D-P3398 CELL OVER DISCHARGE

EVB-131

< DTC/CIRCUIT DIAGNOSIS >

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1. Perform “All DTC Reading” with CONSULT.

2. Check “Self Diagnostic Result” of systems other than “” 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

Installation"

, 

>> GO TO 3.

3.

CHECK HARNESS BETWEEN MODULE AND LI-ION BATTERY CONTROLLER

With CONSULT

1. Select “Self Diagnostic Result” mode of “HV BAT” using CONSULT.

2. Identify the malfunctioning module based on detected DTC. 

3. Disconnect module harness connector and Li-ion battery controller harness connector.

4. Refer to below table and check the continuity between corresponding module and Li-ion battery controller.

DTC

Module 

No.

Module

Li-ion battery controller

Continuity

Connector

Terminal

Connector

Terminal

P338D

25

LB8

9

LB15

89

Existed

10

110

11

90

P338E

26

LB8

11

LB15

90

Existed

12

111

13

91

P338F

27

LB8

13

LB15

91

Existed

28

112

27

92

P3390

28

LB8

27

LB15

92

Existed

26

113

25

93

P3391

29

LB8

25

LB15

93

Existed

23

114

21

94

P3392

30

LB8

21

LB15

94

Existed

19

115

17

95

P3393

31

LB8

17

LB15

95

Existed

3

116

4

96

P3394

32

LB8

4

LB15

96

Existed

18

117

1

97

EVB-132

< DTC/CIRCUIT DIAGNOSIS >

P338D-P3398 CELL OVER DISCHARGE

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-132, "Component Inspection"

.

Is the inspection result normal?

YES

>> Replace Li-ion battery controller. Refer to 

EVB-201, "LI-ION BATTERY CONTROLLER : Removal

and Installation"

.

NO

>> Replace corresponding module. Refer to 

EVB-233, "FRONT MODULE STACK : Disassembly and

Assembly"

.

Component Inspection

INFOID:0000000010121129

1.

CHECK MODULE VOLTAGE

Check voltage of module.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace module. Refer to 

EVB-233, "FRONT MODULE

STACK : Disassembly and Assembly"

.

P3395

33

LB8

1

LB15

97

Existed

2

118

20

99

P3396

34

LB8

20

LB15

99

Existed

6

119

8

100

P3397

35

LB8

8

LB15

100

Existed

22

120

5

101

P3398

36

LB8

5

LB15

101

Existed

7

121

24

102

DTC

Module 

No.

Module

Li-ion battery controller

Continuity

Connector

Terminal

Connector

Terminal

: Positive terminal (Red)
: Negative terminal (Black)

Terminals

Voltage

(Approx.)

(+)

(-)

Module

Positive terminal (Red)

Negative terminal (Black)

5.0 - 8.5 V

JSCIA0338ZZ

P3399-P33A4 CELL OVER DISCHARGE

EVB-133

< DTC/CIRCUIT DIAGNOSIS >

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P3399-P33A4 CELL OVER DISCHARGE

DTC Logic

INFOID:0000000010121130

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-133, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000010121131

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

P3399

CELL OVER DISCHARGE MODULE37

When cell voltage lowers below the allowable 
working voltage range.

• Overcharge caused by trac-

tion motor inverter/VCM mal-
function

• Module
• Li-ion battery controller
• Bus  bar
• Harness or connector

P339A CELL OVER DISCHARGE MODULE38

P339B CELL OVER DISCHARGE MODULE39

P339C CELL OVER DISCHARGE MODULE40

P339D CELL OVER DISCHARGE MODULE41

P339E CELL OVER DISCHARGE MODULE42

P339F

CELL OVER DISCHARGE MODULE43

P33A0 CELL OVER DISCHARGE MODULE44

P33A1 CELL OVER DISCHARGE MODULE45

P33A2 CELL OVER DISCHARGE MODULE46

P33A3 CELL OVER DISCHARGE MODULE47

P33A4 CELL OVER DISCHARGE MODULE48

EVB-134

< DTC/CIRCUIT DIAGNOSIS >

P3399-P33A4 CELL OVER DISCHARGE

1. Perform “All DTC Reading” with CONSULT.

2. Check “Self Diagnostic Result” of systems other than “” 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

Installation"

, 

>> GO TO 3.

3.

CHECK HARNESS BETWEEN MODULE AND LI-ION BATTERY CONTROLLER

With CONSULT

1. Select “Self Diagnostic Result” mode of “HV BAT” using CONSULT.

2. Identify the malfunctioning module based on detected DTC. 

3. Disconnect module harness connector and Li-ion battery controller harness connector.

4. Refer to below table and check the continuity between corresponding module and Li-ion battery controller.

DTC

Module 

No.

Module

Li-ion battery controller

Continuity

Connector

Terminal

Connector

Terminal

P3399

37

LB8

24

LB15

102

Existed

LB7

38

122

40

103

P339A

38

LB7

40

LB15

103

Existed

51

123

37

104

P339B

39

LB7

37

LB15

104

Existed

39

124

53

105

P339C

40

LB7

53

LB15

105

Existed

43

125

44

106

P339D

41

LB7

44

LB15

106

Existed

55

127

41

107

P339E

42

LB7

41

LB15

107

Existed

42

128

56

108

P339F

43

LB7

56

LB15

108

Existed

54

LB16

137

52

130

P33A0

44

LB7

52

LB16

130

Existed

50

138

36

131