Nissan X-Trail 32. Instruction - part 178

BRC-178

< DTC/CIRCUIT DIAGNOSIS >

[WITH VDC (ESP)]

C1199 BRAKE BOOSTER

With CONSULT

1.

Connect the brake vacuum sensor harness connector.

2.

Connect the ABS actuator and electric unit (control unit) harness connector.

3.

Erase self-diagnosis result for “ABS”.

4.

Turn the ignition switch ON.

5.

Perform self-diagnosis for “ABS”.

Is DTC “C1199” detected?

YES

>> GO TO 9.

NO

>> INSPECTION END

9.

CHECK BRAKE VACUUM SENSOR CIRCUIT

1.

Turn the ignition switch OFF.

2.

Disconnect the brake vacuum sensor harness connector.

3.

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

4.

Check the continuity between brake vacuum sensor harness connector and ABS actuator and electric unit
(control unit) harness connector.

5.

Check the continuity between brake vacuum sensor harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 10.

NO

>> Repair or replace error-detected parts.

10.

REPLACE BRAKE VACUUM SENSOR

With CONSULT

1.

Connect the ABS actuator and electric unit (control unit) harness connector.

2.

Connect the brake vacuum sensor harness connector.

3.

Replace the brake vacuum sensor.

-

LHD models: Refer to 

BR-36, "Removal and installation"

.

-

RHD models: Refer to 

BR-99, "Removal and installation"

.

4.

Erase self-diagnosis result for “ABS”.

5.

Turn the ignition switch OFF, and wait 10 seconds or more.

6.

Start the engine.

7.

Perform self-diagnosis for “ABS”.

Is DTC “C1199” detected?

YES

>>

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

• LHD models: Refer to 

BRC-217, "LHD : Removal and Installation"

.

• RHD models: Refer to 

BRC-220, "RHD : Removal and Installation"

.

NO

>> INSPECTION END

Brake vacuum sensor

ABS actuator and electric unit (control unit)

Continuity

Connector

Terminal

Connector

Terminal

E31

1

E36

12

Existed

2

24

3

5

Brake vacuum sensor

—

Continuity

Connector

Terminal

E31

1

Ground

Not existed

2

3

C119A VACUUM SENSOR

BRC-179

< DTC/CIRCUIT DIAGNOSIS >

[WITH VDC (ESP)]

C

D

E

G

H

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BRC

N

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C119A VACUUM SENSOR

DTC Description

INFOID:0000000010723714

DTC DETECTION LOGIC

POSSIBLE CAUSE

• Harness or connector
• Brake vacuum sensor
• ABS actuator and electric unit (control unit)

FAIL-SAFE

Electrical vacuum assistance of brake booster is suspended.

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

If “DTC CONFIRMATION PROCEDURE” has been previously conducted, always turn the ignition 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 ignition switch OFF to ON.

2.

Perform self-diagnosis for “ABS”.

Is DTC “C119A” detected?

YES

>> Proceed to 

BRC-179, "Diagnosis Procedure"

.

NO-1

>> To check malfunction symptom before repair: Refer to 

GI-44, "Intermittent Incident"

.

NO-2

>> Confirmation after repair: INSPECTION END

Diagnosis Procedure

INFOID:0000000010723715

1.

CHECK CONNECTOR

1.

Turn the ignition switch OFF.

2.

Check the brake vacuum sensor harness connector for disconnection or looseness.

3.

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, and GO TO 2.

2.

PERFORM SELF-DIAGNOSIS

With CONSULT

1.

Connect the brake vacuum sensor harness connector.

2.

Connect the ABS actuator and electric unit (control unit) harness connector.

3.

Turn the ignition switch ON.

4.

Perform self-diagnosis for “ABS”.

Is DTC “C119A” detected?

YES

>> GO TO 3.

NO

>> INSPECTION END

3.

CHECK BRAKE VACUUM SENSOR POWER SUPPLY

1.

Turn the ignition switch OFF.

DTC

Display Item

(Trouble diagnosis content)

Malfunction detected condition

C119A

VACUUM SEN VOLT
(Vacuum sensor voltage)

When a malfunction is detected in supply power voltage of vacuum sensor.

BRC-180

< DTC/CIRCUIT DIAGNOSIS >

[WITH VDC (ESP)]

C119A VACUUM SENSOR

2.

Disconnect the brake vacuum sensor harness connector.

3.

Check the voltage between brake vacuum sensor harness connector and ground.

4.

Turn the ignition switch ON.

CAUTION:

Start the engine.

5.

Check the voltage between brake vacuum sensor harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> GO TO 4.

4.

CHECK BRAKE VACUUM SENSOR POWER SUPPLY CIRCUIT

1.

Turn the ignition switch OFF.

2.

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

3.

Check the continuity between brake vacuum sensor harness connector and ABS actuator and electric unit
(control unit) harness connector.

4.

Check the continuity between brake vacuum sensor harness connector and ground.

Is the inspection result normal?

YES

>> Check the ABS actuator and electric unit (control unit) power supply system. Refer to 

BRC-188,

"Diagnosis Procedure"

.

NO

>> Repair or replace error-detected parts.

5.

CHECK BRAKE VACUUM SENSOR GROUND CIRCUIT

1.

Turn the ignition switch OFF.

2.

Check the continuity between brake vacuum sensor harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Repair or replace error-detected parts.

6.

CHECK TERMINAL

1.

Check the vacuum sensor pin terminals for damage or loose connection with harness connector.

2.

Check the ABS actuator and electric unit (control unit) pin terminals for damage or loose connection with
harness connector.

Brake vacuum sensor

—

Voltage

Connector

Terminal

E31

3

Ground

Approx. 0 V

Brake vacuum sensor

—

Voltage

Connector

Terminal

E31

3

Ground

4.75 

−

 5.25 V

Brake vacuum sensor

ABS actuator and electric unit (control unit)

Continuity

Connector

Terminal

Connector

Terminal

E31

3

E36

5

Existed

Brake vacuum sensor

—

Continuity

Connector

Terminal

E31

3

Ground

Not existed

Brake vacuum sensor

—

Continuity

Connector

Terminal

E31

2

Ground

Not existed

C119A VACUUM SENSOR

BRC-181

< DTC/CIRCUIT DIAGNOSIS >

[WITH VDC (ESP)]

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BRC

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Is the inspection result normal?

YES

>>

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

• LHD models: Refer to 

BRC-217, "LHD : Removal and Installation"

.

• RHD models: Refer to 

BRC-220, "RHD : Removal and Installation"

.

NO

>> Repair or replace error-detected parts.