Nissan Leaf. Manual - part 932

LAN-190

< DTC/CIRCUIT DIAGNOSIS >

[CAN SYSTEM (TYPE 4)]

VSP BRANCH LINE CIRCUIT

VSP BRANCH LINE CIRCUIT

Diagnosis Procedure

INFOID:0000000010415444

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 approaching vehicle sound for pedestrians (VSP) 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 approaching vehicle sound for pedestrians (VSP) control unit.

2. Check the resistance between the approaching vehicle sound for pedestrians (VSP) control unit harness

connector terminals.

Is the measurement value within the specification?

YES

>> GO TO 3.

NO

>> Repair the approaching vehicle sound for pedestrians (VSP) control unit branch line.

3.

CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the approaching vehicle sound for pedestrians (VSP) control

unit. Refer to 

VSP-47, "APPROACHING VEHICLE SOUND FOR PEDESTRIANS (VSP) CONTROL UNIT :

Diagnosis Procedure"

.

Is the inspection result normal?

YES (Present error)>>Replace the approaching vehicle sound for pedestrians (VSP) control unit. Refer to

VSP-67, "Removal and Installation"

.

YES (Past error)>>Error was detected in the approaching vehicle sound for pedestrians (VSP) control unit

branch line.

NO

>> Repair the power supply and the ground circuit.

Approaching vehicle sound for pedestrians (VSP) control unit harness connector

Resistance (

Ω)

Connector No.

Terminal No.

M47

4

12

Approx. 54 – 66

LAN

BCM BRANCH LINE CIRCUIT

LAN-191

< DTC/CIRCUIT DIAGNOSIS >

[CAN SYSTEM (TYPE 4)]

C

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F

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BCM BRANCH LINE CIRCUIT

Diagnosis Procedure

INFOID:0000000010415445

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 BCM 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 BCM.

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

Is the measurement value within the specification?

YES

>> GO TO 3.

NO

>> Repair the BCM branch line.

3.

CHECK POWER SUPPLY AND GROUND CIRCUIT

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

BCS-66, "Diagnosis Procedure"

.

Is the inspection result normal?

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

BCS-72, "Removal and Installation"

.

YES (Past error)>>Error was detected in the BCM branch line.

NO

>> Repair the power supply and the ground circuit.

BCM harness connector

Resistance (

Ω)

Connector No.

Terminal No.

M24

39

40

Approx. 108 – 132

LAN-192

< DTC/CIRCUIT DIAGNOSIS >

[CAN SYSTEM (TYPE 4)]

EV/HEV BRANCH LINE CIRCUIT (EV SYSTEM CAN CIRCUIT)

EV/HEV BRANCH LINE CIRCUIT (EV SYSTEM CAN CIRCUIT)

Diagnosis Procedure

INFOID:0000000010415446

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 (unit side and con-

nector side).

-

VCM

-

Harness connector E60

-

Harness connector F2

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 (EV system CAN 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 (EV system CAN circuit side).

NO

>> Repair the power supply and the ground circuit.

VCM harness connector

Resistance (

Ω)

Connector No.

Terminal No.

E61

24

25

Approx. 108 – 132

LAN

INV/MC BRANCH LINE CIRCUIT

LAN-193

< DTC/CIRCUIT DIAGNOSIS >

[CAN SYSTEM (TYPE 4)]

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INV/MC BRANCH LINE CIRCUIT

Diagnosis Procedure

INFOID:0000000010415447

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 traction motor inverter 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 traction motor inverter.

2. Check the resistance between the traction motor inverter harness connector terminals.

Is the measurement value within the specification?

YES

>> GO TO 3.

NO

>> Repair the traction motor inverter branch line.

3.

CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the traction motor inverter. Refer to 

TMS-57, "Diagnosis Pro-

cedure"

.

Is the inspection result normal?

YES (Present error)>>Replace the traction motor inverter. Refer to 

TMS-103, "Removal and Installation"

.

YES (Past error)>>Error was detected in the traction motor inverter branch line.

NO

>> Repair the power supply and the ground circuit.

Traction motor inverter harness connector

Resistance (

Ω)

Connector No.

Terminal No.

F13

14

15

Approx. 54 – 66