Nissan Leaf. Manual - part 920

 

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Nissan Leaf. Manual - part 920

 

 

LAN-142

< DTC/CIRCUIT DIAGNOSIS >

[CAN SYSTEM (TYPE 2)]

EV SYSTEM CAN CIRCUIT

1. Turn the power switch OFF.

2. Disconnect the 12V battery cable from the negative terminal. Refer to 

LAN-26, "Precautions for Removing

Battery Terminal"

.

3. Disconnect all the control unit connectors on EV system CAN circuit. For the removal of Li-ion battery con-

troller, refer to 

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

.

4. Check terminals and connectors for damage, bend and loose connection.
Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair the terminal and connector.

3.

CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the data link connector terminals.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Check the harness and repair the root cause.

4.

CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the data link connector and the ground.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Check the harness and repair the root cause.

5.

CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the vehicle communication harness connector terminals. Refer to 

EVB-27, "Cir-

cuit Diagram"

.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Repair the vehicle communication harness.

6.

CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the vehicle communication harness connector and the ground. Refer to 

EVB-27,

"Circuit Diagram"

.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> Repair the vehicle communication harness.

Data link connector

Continuity

Connector No.

Terminal No.

M4

13

12

Not existed

Data link connector

Ground

Continuity

Connector No.

Terminal No.

M4

13

Not existed

12

Not existed

Vehicle communication harness (LB1)

Continuity

Terminal No.

1

2

Not  existed

Vehicle communication harness (LB1)

Ground

Continuity

Terminal No.

1

Not existed

2

Not existed

LAN

EV SYSTEM CAN CIRCUIT

LAN-143

< DTC/CIRCUIT DIAGNOSIS >

[CAN SYSTEM (TYPE 2)]

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7.

CHECK VCM AND LI-ION BATTERY CONTROLLER TERMINATION CIRCUIT

1. Remove the VCM.

2. Check the resistance between the VCM terminals.

3. Remove the Li-ion battery controller. Refer to 

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

Installation"

.

4. Check the resistance between the Li-ion battery controller terminals.

Is the measurement value within the specification?

YES

>> GO TO 8.

NO

>> Replace the VCM and/or the Li-ion battery controller.

8.

CHECK SYMPTOM

Connect all the connectors. Check if the symptoms described in the “Symptom (Results from interview with

customer)” are reproduced. 
Inspection result

Reproduced>>GO TO 9.

Non-reproduced>>Start the diagnosis again. Follow the trouble diagnosis procedure when past error is

detected.

9.

CHECK CONTROL UNIT REPRODUCTION

Perform the reproduction test as per the following procedure for each control unit.

1. Turn the power switch OFF.

2. Disconnect the 12V battery cable from the negative terminal. Refer to 

LAN-26, "Precautions for Removing

Battery Terminal"

.

3. Disconnect one of the control unit connectors of EV system CAN circuit.

WARNING:

Disconnect the high voltage when disconnecting the Li-ion battery connector (B24). Refer to 

GI-

33, "How to Disconnect High Voltage"

NOTE:

VCM and Li-ion battery controller have a termination circuit. Check other control units first.

4. Connect the 12V battery cable to the negative terminal. Check if the symptoms described in the “Symp-

tom (Results from interview with customer)” are reproduced. 

NOTE:

Although control unit-related error symptoms occur, do not confuse them with other symptoms. 

Inspection result

Reproduced>>Connect the connector. Check other control units as per the above procedure.

Non-reproduced>>Replace the control unit whose connector was disconnected.

VCM

Resistance (

Ω)

Terminal No.

24

25

Approx. 108 – 132

Li-ion battery controller

Resistance (

Ω)

Terminal No.

1

13

Approx. 108 – 132

LAN-144

< DTC/CIRCUIT DIAGNOSIS >

[CAN SYSTEM (TYPE 3)]

MAIN LINE BETWEEN IPDM-E AND DLC CIRCUIT

DTC/CIRCUIT DIAGNOSIS

MAIN LINE BETWEEN IPDM-E AND DLC CIRCUIT

Diagnosis Procedure

INFOID:0000000010415403

1.

CHECK CONNECTOR

1. Turn the power switch OFF.

2. Disconnect the 12V battery cable from the negative terminal. Refer to 

LAN-26, "Precautions for Removing

Battery Terminal"

.

3. Check the following terminals and connectors for damage, bend and loose connection (connector side

and harness side).

-

Harness connector E107

-

Harness connector B7

-

Harness connector B3

-

Harness connector M21

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair the terminal and connector.

2.

CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1. Disconnect the following harness connectors.

-

IPDM E/R

-

Harness connectors E107 and B7

2. Check the continuity between the IPDM E/R harness connector and the harness connector.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair the main line between the IPDM E/R and the harness connector E107.

3.

CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1. Disconnect the harness connectors B3 and M21.

2. Check the continuity between the harness connectors.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair the main line between the harness connectors B7 and B3.

4.

CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

Check the continuity between the harness connector and the data link connector.

Is the inspection result normal?

IPDM E/R harness connector

Harness connector

Continuity

Connector No.

Terminal No.

Connector No.

Terminal No.

E13

27

E107

1

Existed

26

2

Existed

Harness connector

Harness connector

Continuity

Connector No.

Terminal No.

Connector No.

Terminal No.

B7

1

B3

31

Existed

2

32

Existed

Harness connector

Data link connector

Continuity

Connector No.

Terminal No.

Connector No.

Terminal No.

M21

31

M4

6

Existed

32

14

Existed

LAN

MAIN LINE BETWEEN IPDM-E AND DLC CIRCUIT

LAN-145

< DTC/CIRCUIT DIAGNOSIS >

[CAN SYSTEM (TYPE 3)]

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YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the IPDM E/R and the data link connector. 

NO

>> Repair the main line between the harness connector M21 and the data link connector.

 

 

 

 

 

 

 

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