Nissan Leaf. Manual - part 899

LAN-58

< DTC/CIRCUIT DIAGNOSIS >

[CAN]

MAIN LINE BETWEEN INV/MC AND DLC CIRCUIT

MAIN LINE BETWEEN INV/MC AND DLC CIRCUIT

Diagnosis Procedure

INFOID:0000000010120380

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 F2

-

Harness connector E60

-

Harness connector E105

-

Harness connector M77

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.

-

Traction motor inverter

-

Harness connectors F2 and E60

2. Check the continuity between the traction motor inverter harness connector and the harness connector.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair the main line between the traction motor inverter and the harness connector F2.

3.

CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1. Disconnect the harness connectors E105 and M77.

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 connector E60 and the harness connector E105.

4.

CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

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

Is the inspection result normal?

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

Traction motor inverter harness connector

Harness connector

Continuity

Connector No.

Terminal No.

Connector No.

Terminal No.

F13

14

F2

5

Existed

15

6

Existed

Harness connector

Harness connector

Continuity

Connector No.

Terminal No.

Connector No.

Terminal No.

E60

5

E105

50

Existed

6

49

Existed

Harness connector

Data link connector

Continuity

Connector No.

Terminal No.

Connector No.

Terminal No.

M77

50

M4

13

Existed

49

12

Existed

LAN

MAIN LINE BETWEEN INV/MC AND DLC CIRCUIT

LAN-59

< DTC/CIRCUIT DIAGNOSIS >

[CAN]

C

D

E

F

G

H

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B

A

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N

YES (Past error)>>Error was detected in the main line between the traction motor inverter and the data link

connector. 

NO

>> Repair the main line between the harness connector M77 and the data link connector.

LAN-60

< DTC/CIRCUIT DIAGNOSIS >

[CAN]

EV/HEV BRANCH LINE CIRCUIT (CAN COMMUNICATION CIRCUIT)

EV/HEV BRANCH LINE CIRCUIT (CAN COMMUNICATION CIRCUIT)

Diagnosis Procedure

INFOID:0000000010120381

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 terminals and connectors of the VCM for damage, bend and loose connection (unit side and

connector side).

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair the terminal and connector.

2.

CHECK HARNESS FOR OPEN CIRCUIT

1. Disconnect the connector of VCM.

2. Check the resistance between the VCM harness connector terminals.

Is the measurement value within the specification?

YES

>> GO TO 3.

NO

>> Repair the VCM branch line (CAN communication circuit side).

3.

CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the VCM. Refer to 

EVC-138, "VCM : Diagnosis Procedure"

.

Is the inspection result normal?

YES (Present error)>>Replace the VCM. Refer to 

EVC-423, "Removal and Installation"

.

YES (Past error)>>Error was detected in the VCM branch line (CAN communication circuit side).

NO

>> Repair the power supply and the ground circuit.

VCM harness connector

Resistance (

Ω)

Connector No.

Terminal No.

E62

75

76

Approx. 108 – 132

LAN

ABS BRANCH LINE CIRCUIT

LAN-61

< DTC/CIRCUIT DIAGNOSIS >

[CAN]

C

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ABS BRANCH LINE CIRCUIT

Diagnosis Procedure

INFOID:0000000010120382

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 terminals and connectors of the ABS actuator and electric unit (control unit) for damage, bend

and loose connection (unit side and connector side).

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair the terminal and connector.

2.

CHECK HARNESS FOR OPEN CIRCUIT

1. Disconnect the connector of ABS actuator and electric unit (control unit).

2. Check the resistance between the ABS actuator and electric unit (control unit) harness connector termi-

nals.

Is the measurement value within the specification?

YES

>> GO TO 3.

NO

>> Repair the ABS actuator and electric unit (control unit) branch line.

3.

CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the ABS actuator and electric unit (control unit). Refer to

BRC-137, "Diagnosis Procedure"

.

Is the inspection result normal?

YES (Present error)>>Replace the ABS actuator and electric unit (control unit). Refer to 

BRC-162, "Removal

and Installation"

.

YES (Past error)>>Error was detected in the ABS actuator and electric unit (control unit) branch line.

NO

>> Repair the power supply and the ground circuit.

ABS actuator and electric unit (control unit) harness connector

Resistance (

Ω)

Connector No.

Terminal No.

E35

22

9

Approx. 54 – 66