Nissan Tiida C11. Manual - part 72

BRC-54

< COMPONENT DIAGNOSIS >

[ABS]

C1140 ACTUATOR RLY

C1140 ACTUATOR RLY

Description

INFOID:0000000001731275

Activates or deactivates each solenoid valve according to the signals transmitted by the ABS actuator and
electric unit (control unit). 

DTC Logic

INFOID:0000000001731276

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

CHECK SELF-DIAGNOSIS RESULTS

Check the self-diagnosis results.

Is above displayed on the self-diagnosis display?

YES

>> Proceed to diagnosis procedure. Refer to 

BRC-54, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000001731277

INSPECTION PROCEDURE

1.

CHECK CONNECTOR

1.

Turn ignition switch OFF.

2.

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

3.

Check terminal for deformation, disconnection, looseness, and so on. If any malfunction is found, repair or
replace terminal.

4.

Reconnect connectors and then perform the self-diagnosis. Refer to 

BRC-25, "CONSULT-III Function

(ABS)"

.

Is any item indicated on the self-diagnosis display?

YES

>> GO TO 2

NO

>> Poor connection of connector terminal. Repair or replace connector.

2.

CHECK SOLENOID, VDC SWITCH-OVER VALVE AND ACTUATOR RELAY POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect ABS actuator and electric unit (control unit) connec-
tor.

3.

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

Is the inspection result normal?

YES

>> GO TO 3

NO

>> Repair or replace malfunctioning components.

3.

CHECK SOLENOID, VDC SWITCH-OVER VALVE AND ACUATOR RELAY GROUND CIRCUIT

DTC

Display item

Malfunction detected condition

Possible cause

C1140

ACTUATOR RLY

ABS actuator relay or circuit malfunction.

• Harness or connector
• ABS actuator and electric unit 

(control unit)

Self-diagnosis results

ACTUATOR RLY

ABS actuator and electric unit (control unit)

—

Voltage

Connector

Terminal

E125

32

Ground

Battery voltage

AWFIA0018ZZ

C1140 ACTUATOR RLY

BRC-55

< COMPONENT DIAGNOSIS >

[ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

N

O

P

Check continuity between ABS actuator and electric unit (control
unit) harness connector terminals and ground.

Is the inspection result normal?

YES

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

Refer to 

BRC-85, "Removal and Installation"

.

NO

>> Repair or replace malfunctioning components.

Component Inspection

INFOID:0000000001731278

1.

CHECK ACTIVE TEST

1.

On “ACTIVE TEST”, select “ABS MOTOR”.

2.

Touch ON and OFF on screen. Make sure motor relay and actuator relay operates as shown in table
below.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Go to diagnosis procedure. Refer to 

BRC-54, "Diagnosis Procedure"

.

Special Repair Requirement

INFOID:0000000001731279

1.

ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION

Always perform neutral position adjustment for the steering angle sensor when replacing the ABS actuator
and electric unit (control unit). Refer to 

BRC-90, "ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL

POSITION : Description"

.

>> GO TO 2

2.

CALIBRATION OF DECEL G SENSOR

Always perform calibration of decel G sensor when replacing the ABS actuator and electric unit (control unit).
Refer to 

BRC-91, "CALIBRATION OF DECEL G SENSOR : Description"

.

>> END

ABS actuator and electric unit (control unit)

—

Continuity

Connector

Terminal

E125

16, 47

Ground

Yes

AWFIA0016ZZ

Operation

ON

OFF

MOTOR RELAY

ON

OFF

ACTUATOR RLY

ON

ON

BRC-56

< COMPONENT DIAGNOSIS >

[ABS]

C1155 BRAKE FLUID LEVEL SWITCH

C1155 BRAKE FLUID LEVEL SWITCH

Description

INFOID:0000000001731290

The brake fluid level switch converts the brake fluid level to an electric signal and transmits it to the ABS actu-
ator and electric unit (control unit). 

DTC Logic

INFOID:0000000001731291

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

CHECK SELF-DIAGNOSIS RESULTS

Check the self-diagnosis results.

Is above displayed on the self-diagnosis display?

YES

>> Proceed to diagnosis procedure. Refer to 

BRC-56, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000001731292

INSPECTION PROCEDURE

1.

CONNECTOR INSPECTION

1.

Disconnect ABS actuator and electric unit (control unit) connector E125 and brake fluid level switch con-
nector E21. 

2.

Check the terminals for deformation, disconnection, looseness or damage.

Is the inspection result normal?

YES

>> GO TO 2

NO

>> Repair or replace as necessary.

2.

CHECK HARNESS BETWEEN BRAKE FLUID LEVEL SWITCH AND ABS ACTUATOR AND ELECTRIC

UNIT (CONTROL UNIT)

1.

Check continuity between ABS actuator and electric unit (control
unit) harness connector E125 (A) and brake fluid level switch
harness connector E21 (B).

2.

Check continuity between ABS actuator and electric unit (control
unit) harness connector E125 (A) and ground.

Is the inspection result normal?

DTC

Display item

Malfunction detected condition

Possible cause

C1155

BR FLUID LEVEL LOW

Brake fluid level is low or communication line between 
the ABS actuator and electric unit (control unit) and brake 
fluid level switch is open or shorted.

• Harness or connector
• Brake fluid level switch
• Brake  fluid  level

Self-diagnosis results

BR FLUID LEVEL LOW

ABS actuator and electric unit 

(control unit)

Brake fluid level switch

Continuity

Connector

Terminal

Connector

Terminal

A: E125

8

B: E21

1

Yes

ABS actuator and electric unit (control unit)

—

Continuity

Connector

Terminal

A: E125

8

Ground

No

AWFIA0025ZZ

C1155 BRAKE FLUID LEVEL SWITCH

BRC-57

< COMPONENT DIAGNOSIS >

[ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

N

O

P

YES

>> GO TO 3

NO

>> Repair or replace malfunctioning components.

3.

CHECK BRAKE FLUID LEVEL SWITCH GROUND

Check continuity between brake fluid level switch harness connector
E21 and ground.

Is the inspection result normal?

YES

>> GO TO 4

NO

>> Repair or replace malfunctioning components.

4.

CHECK BRAKE FLUID LEVEL SWITCH

Check continuity between brake fluid level switch terminals.

Is the inspection result normal?

YES

>> Perform self-diagnosis again. If the same results

appear, replace ABS actuator and electric unit (control unit). Refer to 

BRC-85, "Removal and

Installation"

.

NO

>> Replace brake fluid level switch.

Component Inspection

INFOID:0000000001731293

1.

CHECK BRAKE FLUID LEVEL SWITCH

1.

Turn ignition switch OFF.

2.

Disconnect brake fluid level switch connector.

3.

Check continuity between brake fluid level switch terminals.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace brake fluid level switch.

Special Repair Requirement

INFOID:0000000001731294

1.

ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION

Always perform neutral position adjustment for the steering angle sensor when replacing the ABS actuator
and electric unit (control unit). Refer to 

BRC-90, "ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL

POSITION : Description"

.

Brake fluid level switch

—

Continuity

Connector

Terminal

E21

2

Ground

Yes

AWFIA0026ZZ

Brake fluid level switch

Condition

Continuity

Terminal

1 

−

 2

When brake fluid is full in the reser-
voir tank.

No

When brake fluid is empty in the 
reservoir tank.

Yes

ALFIA0026ZZ

Brake fluid level switch

Condition

Continuity

Terminal

1 

−

 2

When brake fluid is full in the reser-
voir tank.

No

When brake fluid is empty in the 
reservoir tank.

Yes

ALFIA0026ZZ