Nissan Leaf. Manual - part 903

LAN-74

< DTC/CIRCUIT DIAGNOSIS >

[CAN]

INV/MC BRANCH LINE CIRCUIT

INV/MC BRANCH LINE CIRCUIT

Diagnosis Procedure

INFOID:0000000010120395

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

LAN

OBC/PD MODULE BRANCH LINE CIRCUIT

LAN-75

< DTC/CIRCUIT DIAGNOSIS >

[CAN]

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

OBC/PD MODULE BRANCH LINE CIRCUIT

Diagnosis Procedure

INFOID:0000000010120396

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 PDM (Power Delivery Module) 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 PDM (Power Delivery Module).

2. Check the resistance between the PDM (Power Delivery Module) harness connector terminals.

Is the measurement value within the specification?

YES

>> GO TO 3.

NO

>> Repair the PDM (Power Delivery Module) branch line.

3.

CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the PDM (Power Delivery Module). Refer to 

VC-54, "PDM

(POWER DELIVERY MODULE) : Diagnosis Procedure"

.

Is the inspection result normal?

YES (Present error)>>Replace the PDM (Power Delivery Module). Refer to 

VC-112, "Removal and Installa-

tion"

.

YES (Past error)>>Error was detected in the PDM (Power Delivery Module) branch line.

NO

>> Repair the power supply and the ground circuit.

PDM (Power Delivery Module) harness connector

Resistance (

Ω)

Connector No.

Terminal No.

F23

27

11

Approx. 54 – 66

LAN-76

< DTC/CIRCUIT DIAGNOSIS >

[CAN]

DLC BRANCH LINE CIRCUIT (EV SYSTEM CAN CIRCUIT)

DLC BRANCH LINE CIRCUIT (EV SYSTEM CAN CIRCUIT)

Diagnosis Procedure

INFOID:0000000010120397

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 data link connector for damage, bend and loose connection

(connector side and harness side).

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair the terminal and connector.

2.

CHECK HARNESS FOR OPEN CIRCUIT

Check the resistance between the data link connector terminals.

Is the measurement value within the specification?

YES (Present error)>>Diagnose again. Refer to 

LAN-17, "Trouble Diagnosis Flow Chart"

.

YES (Past error)>>Error was detected in the data link connector branch line circuit (EV system CAN circuit

side).

NO

>> Repair the data link connector branch line (EV system CAN circuit side).

Data link connector

Resistance (

Ω)

Connector No.

Terminal No.

M4

13

12

Approx. 54 – 66

LAN

HVAC BRANCH LINE CIRCUIT

LAN-77

< DTC/CIRCUIT DIAGNOSIS >

[CAN]

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

HVAC BRANCH LINE CIRCUIT

Diagnosis Procedure

INFOID:0000000010120398

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 A/C auto amp. 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 A/C auto amp.

2. Check the resistance between the A/C auto amp. harness connector terminals.

Is the measurement value within the specification?

YES

>> GO TO 3.

NO

>> Repair the A/C auto amp. branch line.

3.

CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the A/C auto amp. Refer to the following.

• Auto A/C (With heat pump): 

HAC-173, "A/C AUTO AMP. : Diagnosis Procedure"

• Auto A/C (Without heat pump): 

HAC-333, "A/C AUTO AMP. : Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the A/C auto amp. Refer to the following.

• Auto A/C (With heat pump): 

HAC-187, "Removal and Installation"

• Auto A/C (Without heat pump): 

HAC-347, "Removal and Installation"

YES (Past error)>>Error was detected in the A/C auto amp. branch line.

NO

>> Repair the power supply and the ground circuit.

A/C auto amp. harness connector

Resistance (

Ω)

Connector No.

Terminal No.

M55

28

29

Approx. 54 – 66