Nissan Leaf. Manual - part 922

LAN-150

< DTC/CIRCUIT DIAGNOSIS >

[CAN SYSTEM (TYPE 3)]

ABS BRANCH LINE CIRCUIT

ABS BRANCH LINE CIRCUIT

Diagnosis Procedure

INFOID:0000000010415407

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

LAN

BRAKE BRANCH LINE CIRCUIT

LAN-151

< DTC/CIRCUIT DIAGNOSIS >

[CAN SYSTEM (TYPE 3)]

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

BRAKE BRANCH LINE CIRCUIT

Diagnosis Procedure

INFOID:0000000010415408

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 electrically-driven intelligent brake 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 electrically-driven intelligent brake unit.

2. Check the resistance between the electrically-driven intelligent brake unit harness connector terminals.

Is the measurement value within the specification?

YES

>> GO TO 3.

NO

>> Repair the electrically-driven intelligent brake unit branch line.

3.

CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the electrically-driven intelligent brake unit. Refer to 

BR-470,

"Diagnosis Procedure"

.

Is the inspection result normal?

YES (Present error)>>Replace the electrically-driven intelligent brake unit. Refer to 

BR-510, "Removal and

installation"

.

YES (Past error)>>Error was detected in the electrically-driven intelligent brake unit branch line.

NO

>> Repair the power supply and the ground circuit.

Electrically-driven intelligent brake unit harness connector

Resistance (

Ω)

Connector No.

Terminal No.

E34

40

39

Approx. 54 – 66

LAN-152

< DTC/CIRCUIT DIAGNOSIS >

[CAN SYSTEM (TYPE 3)]

IPDM-E BRANCH LINE CIRCUIT

IPDM-E BRANCH LINE CIRCUIT

Diagnosis Procedure

INFOID:0000000010415409

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 IPDM E/R 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 IPDM E/R.

2. Check the resistance between the IPDM E/R harness connector terminals.

Is the measurement value within the specification?

YES

>> GO TO 3.

NO

>> Repair the IPDM E/R branch line.

3.

CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the IPDM E/R. Refer to 

PCS-28, "Diagnosis Procedure"

.

Is the inspection result normal?

YES (Present error)>>Replace the IPDM E/R. Refer to 

PCS-29, "Removal and Installation"

.

YES (Past error)>>Error was detected in the IPDM E/R branch line.

NO

>> Repair the power supply and the ground circuit.

IPDM E/R harness connector

Resistance (

Ω)

Connector No.

Terminal No.

E13

27

26

Approx. 54 – 66

LAN

DLC BRANCH LINE CIRCUIT (CAN COMMUNICATION CIRCUIT)

LAN-153

< DTC/CIRCUIT DIAGNOSIS >

[CAN SYSTEM (TYPE 3)]

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

DLC BRANCH LINE CIRCUIT (CAN COMMUNICATION CIRCUIT)

Diagnosis Procedure

INFOID:0000000010415410

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 (CAN communication cir-

cuit side).

NO

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

Data link connector

Resistance (

Ω)

Connector No.

Terminal No.

M4

6

14

Approx. 54 – 66