Nissan Leaf. Manual - part 451

P3064 CELL CONT ASIC

EVB-87

< DTC/CIRCUIT DIAGNOSIS >

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P3064 CELL CONT ASIC

DTC Logic

INFOID:0000000010121075

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 P3064 detected?

YES

>> Refer to 

EVB-87, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000010121076

When this DTC is detected, replace Li-ion battery controller. Refer to 

EVB-201, "LI-ION BATTERY CONTROL-

LER : Removal and Installation"

.

DTC

Trouble diagnosis name

DTC detecting condition

Possible causes

P3064

CELL CONTROLLER ASIC

A malfunction occurs with the communication function in Li-
ion battery controller.

Li-ion battery controller

EVB-88

< DTC/CIRCUIT DIAGNOSIS >

P308B-P3096 CELL CONTROLLER ASIC OPEN

P308B-P3096 CELL CONTROLLER ASIC OPEN

DTC Logic

INFOID:0000000010121077

DTC DETECTION LOGIC

DTC DETECTION LOGIC

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 P308B-P3096 detected?

YES

>> Refer to 

EVB-88, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000010121078

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.

PERFORM THE SELF-DIAGNOSIS OF LI-ION BATTERY CONTROLLER

DTC

Trouble diagnosis name

DTC detecting condition

Possible causes

P308B

CELL CONT ASIC1 OPEN

Self diagnosis program of Li-ion battery controller de-
tects an open circuit in the cell voltage detection line.

• Li-ion battery controller
• Harness or connector

P308C

CELL CONT ASIC2 OPEN

P308D

CELL CONT ASIC3 OPEN

P308E

CELL CONT ASIC4 OPEN

P308F

CELL CONT ASIC5 OPEN

P3090

CELL CONT ASIC6 OPEN

P3091

CELL CONT ASIC7 OPEN

P3092

CELL CONT ASIC8 OPEN

P3093

CELL CONT ASIC9 OPEN

P3094

CELL CONT ASIC10 OPEN

P3095

CELL CONT ASIC11 OPEN

P3096

CELL CONT ASIC12 OPEN

P308B-P3096 CELL CONTROLLER ASIC OPEN

EVB-89

< DTC/CIRCUIT DIAGNOSIS >

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With CONSULT

1. Select “Self Diagnostic Result” of “HV BAT”.

2. Check to see if “P3049”-“P3060” (CELL CONT ASIC VOLT related codes) or “P3375”-“P33A4” (CELL

OVER DISCHARGE related codes) is detected simultaneously with “P308B”-“P3096”.

Is P3049-P3060 or P3375-P33A4 detected?

YES-1 >> “P3049”-“P3060” are detected simultaneously.

• When “P3049”-“P3054” are detected simultaneously, perform the diagnosis procedure of

“P3049”-“P3054”. Refer to 

EVB-81, "Diagnosis Procedure"

.

• When “P3055”-“P3060” are detected simultaneously, perform the diagnosis procedure of

“P3055”-“P3060”. Refer to 

EVB-83, "Diagnosis Procedure"

.

YES-2 >> “P3375”-“P33A4” are detected simultaneously.

• When “P3375”-“P3380” are detected simultaneously, perform the diagnosis procedure of

“P3375”-“P3380”. Refer to 

EVB-122, "Diagnosis Procedure"

.

• When “P3381”-“P338C” are detected simultaneously, perform the diagnosis procedure of

“P3381”-“P338C”. Refer to 

EVB-126, "Diagnosis Procedure"

.

• When “P338D”-“P3398” are detected simultaneously, perform the diagnosis procedure of

“P338D”-“P3398”. Refer to 

EVB-130, "Diagnosis Procedure"

• When “P3399”-“P33A4” are detected simultaneously, perform the diagnosis procedure of

“P3399”-“P33A4”. Refer to 

EVB-133, "Diagnosis Procedure"

.

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 CONNECTION STATUS

1. Power switch OFF.

2. Check connection status of Li-ion battery controller harness connector and module harness connector.
Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Recover the connection status.

4.

CHECK HARNESS BETWEEN LI-ION BATTERY CONTROLLER AND MODULE

1. Disconnect Li-ion battery controller harness connector and voltage detection terminal of bus bar.
2. Refer to below table and continuity between Li-ion battery controller   and voltage detection terminal 

of bus bar, according to detected DTC.

JSCIA0813ZZ

EVB-90

< DTC/CIRCUIT DIAGNOSIS >

P308B-P3096 CELL CONTROLLER ASIC OPEN

Is the inspection result normal?

YES

>> Replace Li-ion battery controller. Refer to 

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

and Installation"

.

NO

>> Repair harness or connector.

DTC

Module 

No.

Voltage detection terminal of bus 

bar

Li-ion battery controller

Continuity

Connector

Terminal

P308B

1

LB13

50

Existed

2

51

P308C

3

LB13

52

Existed

4

53

P308D

5

LB13

54

Existed

6

55

P308E

7

LB13

56

Existed

8

57

P308F

9

LB13

58

Existed

10

59

P3090

11

LB13

60

Existed

12

61

P3091

13

LB13

62

Existed

14

63

P3092

15

LB14

77

Existed

16

78

P3093

17

LB14

80

Existed

18

81

P3094

19

LB14

82

Existed

20

83

P3095

21

LB14

84

Existed

22

85

P3096

23

LB14

86

Existed

24

87