Nissan Leaf. Manual - part 332

BRC-118

< DTC/CIRCUIT DIAGNOSIS >

[WITH VDC]

C1155 BRAKE FLUID LEVEL SWITCH

Component Inspection

INFOID:0000000010120085

1.

CHECK BRAKE FLUID LEVEL SWITCH

1. Turn the power switch OFF.

2. Disconnect brake fluid level switch harness connector.

3. Check the continuity between terminals of brake fluid level switch.

Is the inspection result normal?

YES

>> Inspection End.

NO

>> Replace electrically-driven intelligent brake unit. Refer to 

BR-510, "Removal and installation"

.

Brake fluid level switch

Condition

Continuity

Terminal

1 – 2

When brake fluid level in reservoir tank is within the specified level.

No

When brake fluid level in reservoir tank is less than the specified level.

Yes

C1164, C1165 CV SYSTEM

BRC-119

< DTC/CIRCUIT DIAGNOSIS >

[WITH VDC]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

N

O

P

C1164, C1165 CV SYSTEM

DTC Logic

INFOID:0000000010120086

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 “C1164” or “C1165” detected?

YES

>> Proceed to 

BRC-119, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000010120087

Regarding Wiring Diagram information. Refer to 

BRC-58, "Wiring Diagram"

.

1.

CHECK CONNECTOR

1. Turn the power switch OFF.

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

YES

>> GO TO 3.

NO

>> Repair or replace error-detected parts, securely lock the connector, and GO TO 2.

2.

PERFORM SELF DIAGNOSTIC (1)

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 any “C1164” or “C1165” detected?

YES

>> GO TO 3.

DTC

Display Item

Malfunction detected condition

Possible causes

C1164

CV 1

When a malfunction is detected in cut valve 1.

• Harness or connector
• ABS actuator and electric unit 

(control unit)

• Fusible link
• 12V battery power supply sys-

tem

C1165

CV 2

When a malfunction is detected in cut valve 2.

BRC-120

< DTC/CIRCUIT DIAGNOSIS >

[WITH VDC]

C1164, C1165 CV SYSTEM

NO

>> Inspection End.

3.

CHECK CUT VALVE POWER SUPPLY

1. Turn the power switch OFF.

2. Disconnect ABS actuator and electric unit (control unit) harness connector.

3. Check the voltage between ABS actuator and electric unit (control unit) harness connector and ground.

4. Turn the power switch ON.

CAUTION:

Never set the vehicle to READY.

5. Check the voltage between ABS actuator and electric unit (control unit) harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> GO TO 4.

4.

CHECK CUT VALVE POWER SUPPLY CIRCUIT

1. Turn the power switch OFF.

2. Check the 50A fusible link (#J).

3. Check the continuity and short circuit between ABS actuator and electric unit (control unit) harness con-

nector terminal (2) and 50A fusible link (#J).

Is the inspection result normal?

YES

>> Perform trouble diagnosis for 12V battery power supply. Refer to 

PG-15, "Wiring Diagram — Bat-

tery Power Supply —"

.

NO

>> Repair or replace error-detected parts.

5.

CHECK CUT VALVE GROUND CIRCUIT

1. Turn the power switch OFF.

2. Check the continuity between ABS actuator and electric unit (control unit) harness connector and the

ground.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Repair or replace error-detected parts.

6.

CHECK TERMINAL

Check the ABS actuator and electric unit (control unit) pin terminals for damage or loose connection with har-

ness connector.
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.

ABS actuator and electric unit (control unit)

—

Voltage

(Approx.)

Connector

Terminal

E35

2

Ground

Battery voltage

ABS actuator and electric unit (control unit)

—

Voltage

(Approx.)

Connector

Terminal

E35

2

Ground

Battery voltage

ABS actuator and electric unit (control unit)

—

Continuity

Connector

Terminal

E35

3

Ground

Yes

4

C1166, C1167 SV SYSTEM

BRC-121

< DTC/CIRCUIT DIAGNOSIS >

[WITH VDC]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

N

O

P

C1166, C1167 SV SYSTEM

DTC Logic

INFOID:0000000010120088

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 “C1166” or “C1167” detected?

YES

>> Proceed to 

BRC-121, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000010120089

Regarding Wiring Diagram information. Refer to 

BRC-58, "Wiring Diagram"

.

1.

CHECK CONNECTOR

1. Turn the power switch OFF.

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

YES

>> GO TO 3.

NO

>> Repair or replace error-detected parts, securely lock the connector, and GO TO 2.

2.

PERFORM SELF DIAGNOSTIC (1)

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 any “C1166” or “C1167” detected?

YES

>> GO TO 3.

DTC

Display Item

Malfunction detected condition

Possible causes

C1166

SV 1

When a malfunction is detected in suction valve 1.

• Harness or connector
• ABS actuator and electric unit 

(control unit)

• Fusible link
• 12V battery power supply sys-

tem

C1167

SV 2

When a malfunction is detected in suction valve 2.