Nissan Leaf. Manual - part 473

 

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Nissan Leaf. Manual - part 473

 

 

LI-ION BATTERY HEATER SYSTEM INSULATION RESISTANCE CHECK

EVB-175

< DTC/CIRCUIT DIAGNOSIS >

D

E

F

G

H

I

J

K

L

M

A

B

EVB

N

O

P

Is the inspection result normal?

YES

>> INSPECTION END.

NO

>> Replace high voltage harness.

High voltage harness

Ground

Resistance

Connector

Terminal

LB18

11

Battery pack lower case

1000 M

Ω or more

EVB-176

< DTC/CIRCUIT DIAGNOSIS >

POWER SUPPLY AND GROUND CIRCUIT

POWER SUPPLY AND GROUND CIRCUIT

Diagnosis Procedure

INFOID:0000000010121167

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 FUSE

Check that the following fuse is not fusing.

Is the fuse fusing?

YES

>> Replace the fuse after repairing the applicable circuit.

NO

>> GO TO 2.

2.

CHECK LI-ION BATTERY CONTROLLER GROUND CIRCUIT

1. Turn power switch OFF.

2. Disconnect Li-ion battery vehicle communication harness connector.

3. Check the continuity between Li-ion battery vehicle communication harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace error-detected parts.

3.

CHECK BATTERY POWER SUPPLY

Check the voltage between Li-ion battery vehicle communication harness connector and ground.

Power supply

Fuse No.

Battery

79

Power switch ON

57

74

+

Continuity

Li-ion battery

Connector

Terminal

B24

6

Ground

Existed

7

8

POWER SUPPLY AND GROUND CIRCUIT

EVB-177

< DTC/CIRCUIT DIAGNOSIS >

D

E

F

G

H

I

J

K

L

M

A

B

EVB

N

O

P

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> GO TO 4.

4.

CHECK BATTERY POWER SUPPLY CIRCUIT

1. Check the continuity between Li-ion battery vehicle communication harness connector and fuse terminal.

2. Also check harness for short to ground.
Is the inspection result normal?

YES

>> Check power supply circuit for battery power supply.

NO

>> Repair or replace error-detected parts.

5.

CHECK POWER SWITCH ON POWER SUPPLY

1. Turn power switch ON.

2. Check the voltage between Li-ion battery vehicle communication harness and ground.

Is the inspection result normal?

YES

>> GO TO 8.

NO

>> GO TO 6.

6.

CHECK POWER SWITCH ON POWER SUPPLY CIRCUIT-1

1. Turn power switch OFF.

2. Disconnect IPDM E/R harness connector.

3. Check the continuity between Li-ion battery vehicle communication harness and IPDM E/R harness con-

nector.

4. Also check harness for short to ground.
Is the inspection result normal?

YES

>> GO TO 7.

NO

>> Repair or replace error-detected parts.

7.

CHECK POWER SWITCH ON POWER SUPPLY CIRCUIT-2

1. Check the continuity between Li-ion battery vehicle communication harness and fuse terminal.

+

Voltage

Li-ion battery

Connector

Terminal

B24

5

Ground

12V battery power 

supply

+

Continuity

Li-ion battery

Connector

Terminal

B24

5

No.79 fuse ter-

minal

Existed

+

Voltage

(Approx.)

Li-ion battery

Connector

Terminal

B24

4

Ground

11 – 14 V

31

Li-ion battery

IPDM E/R

Continuity

Connector

Terminal

Connector

Terminal

B24

4

E15

59

Existed

EVB-178

< DTC/CIRCUIT DIAGNOSIS >

POWER SUPPLY AND GROUND CIRCUIT

2. Also check harness for short to ground.
Is the inspection result normal?

YES

>> Check power supply circuit for battery power supply.

NO

>> Repair or replace error-detected parts.

8.

PRECONDITIONING

WARNING:

Shut off high voltage circuit. 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 9.

9.

CHECK HARNESS BETWEEN LI-ION BATTERY AND LI-ION BATTERY CONTROLLER

1. Check the continuity between Li-ion battery vehicle communication harness connector and Li-ion battery

controller harness connector.

2. Also check harness for short to ground.
Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Repair or replace error-detected parts.

Li-ion battery

Continuity

Connector

Terminal

B24

31

No.74 fuse ter-

minal

Existed

LBC

Li-ion battery

Continuity

Connector

Terminal

Connector

Terminal

LB11

5

LB1

31

Existed

7

4

12

5

2

8

3

7

14

6

 

 

 

 

 

 

 

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