Nissan Leaf. Manual - part 335

BRC-130

< DTC/CIRCUIT DIAGNOSIS >

[WITH VDC]

C118C EV SYSTEM

C118C EV SYSTEM

DTC Logic

INFOID:0000000010120095

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

If “DTC CONFIRMATION PROCEDURE” has been previously conducted, always turn power switch OFF and

wait at least 10 seconds before conducting the next test.

>> GO TO 2.

2.

CHECK DTC DETECTION

With CONSULT

1. Turn the power switch OFF 

→ ON.

CAUTION:

• Be sure to wait of 10 seconds after turning power switch OFF or ON.

• Set the vehicle to READY.

2. Repeat step 1 two or more times.

3. Perform “Self Diagnostic Result” of “ABS”.
Is DTC “C118C” detected?

YES

>> Proceed to 

BRC-130, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000010120096

1.

CHECK VCM SYSTEM

With CONSULT

Perform “Self Diagnostic Result” of “EV/HEV”. Refer to 

EVC-72, "CONSULT Function"

.

Is any DTC detected?

YES

>> Check the DTC. Refer to 

EVC-102, "DTC Index"

.

NO

>> GO TO 2.

2.

CHECK CAN COMMUNICATION

Check the CAN communication line. Refer to 

LAN-17, "Trouble Diagnosis Flow Chart"

.

>> GO TO 3.

3.

CHECK SELF DIAGNOSTIC

With CONSULT

1. Erase “Self Diagnostic Result” of “ABS”.

2. Turn the power switch OFF 

→ ON.

CAUTION:

• Be sure to wait of 10 seconds after turning power switch OFF or ON.

• Set the vehicle to READY.

3. Repeat step 2 two or more times.

4. Perform “Self Diagnostic Result” of “ABS”.
Is DTC “C118C” or “U1000” detected?

YES (“C118C”)>>GO TO 1.

DTC

Display Item

Malfunction detected condition

Possible causes

C118C

EV/HEV SYSTEM

When a malfunction is detected in VCM system.

• VCM
• ABS actuator and electric unit 

(control unit)

• CAN communication line

C118C EV SYSTEM

BRC-131

< DTC/CIRCUIT DIAGNOSIS >

[WITH VDC]

C

D

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H

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A

B

BRC

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YES (“U1000”)>>Refer to 

LAN-17, "Trouble Diagnosis Flow Chart"

.

NO

>> Inspection End.

BRC-132

< DTC/CIRCUIT DIAGNOSIS >

[WITH VDC]

U1000 CAN COMM CIRCUIT

U1000 CAN COMM CIRCUIT

Description

INFOID:0000000010120097

CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-

tiplex communication line with high data communication speed and excellent error detection ability. Many elec-

tronic control units are equipped onto a vehicle, and each control unit shares information and links with other

control units during operation (not independent). In CAN communication, control units are connected with 2

communication lines (CAN-H line, CAN-L line) allowing a high rate of information transmission with less wiring.

Each control unit transmits/receives data but selectively reads required data only.

DTC Logic

INFOID:0000000010120098

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

If “DTC CONFIRMATION PROCEDURE” has been previously conducted, always turn power switch OFF and

wait at least 10 seconds before conducting the next test.

>> GO TO 2.

2.

CHECK DTC DETECTION

With CONSULT

1. Turn the power switch OFF 

→ ON.

CAUTION:

• Be sure to wait of 10 seconds after turning power switch OFF or ON.

• Set the vehicle to READY.

2. Repeat step 1 two or more times.

3. Perform “Self Diagnostic Result” of “ABS”.
Is DTC “U1000” detected?

YES

>> Proceed to 

BRC-132, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000010120099

Proceed to 

LAN-17, "Trouble Diagnosis Flow Chart"

.

DTC

Display Item

Malfunction detected condition

Possible causes

U1000

CAN COMM CIRCUIT

When CAN communication signal is not continuously 
transmitted or received for 2 seconds or more.

CAN communication system mal-
function

U1010 CONTROL UNIT (CAN)

BRC-133

< DTC/CIRCUIT DIAGNOSIS >

[WITH VDC]

C

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G

H

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A

B

BRC

N

O

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U1010 CONTROL UNIT (CAN)

Description

INFOID:0000000010120100

CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-

tiplex communication line with high data communication speed and excellent error detection ability. Many elec-

tronic control units are equipped onto a vehicle, and each control unit shares information and links with other

control units during operation (not independent). In CAN communication, control units are connected with 2

communication lines (CAN-H line, CAN-L line) allowing a high rate of information transmission with less wiring.

Each control unit transmits/receives data but selectively reads required data only.

DTC Logic

INFOID:0000000010120101

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

If “DTC CONFIRMATION PROCEDURE” has been previously conducted, always turn power switch OFF and

wait at least 10 seconds before conducting the next test.

>> GO TO 2.

2.

CHECK DTC DETECTION

With CONSULT

1. Turn the power switch OFF 

→ ON.

CAUTION:

• Be sure to wait of 10 seconds after turning power switch OFF or ON.

• Set the vehicle to READY.

2. Repeat step 1 two or more times.

3. Perform “Self Diagnostic Result” of “ABS”.
Is DTC “U1010” detected?

YES

>> Proceed to 

BRC-133, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000010120102

1.

CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)

Check the ABS actuator and electric unit (control unit) harness connector for disconnection and deformation.
Is the inspection result normal?

YES

>> Replace ABS actuator and electric unit (control unit). Refer to 

BRC-162, "Removal and Installa-

tion"

.

NO

>> Repair or replace error-detected parts.

DTC

Display item

Malfunction detected condition

Possible causes

U1010

CONTROL UNIT (CAN)

When detecting error during the initial diagnosis of 
CAN controller of ABS actuator and electric unit (con-
trol unit).

ABS actuator and electric unit 
(control unit)