Infiniti FX35, FX50 (S51). Manual — part 265

C1199 VACUUM SENSOR

BRC-91

< DTC/CIRCUIT DIAGNOSIS >

[VDC/TCS/ABS]

C

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BRC

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C1199 VACUUM SENSOR

Description

INFOID:0000000005234602

The vacuum sensor converts the vacuum pressure to an electric signal and transmits it to the ABS actuator
and electric unit (control unit).

DTC Logic

INFOID:0000000005234603

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

DTC REPRODUCTION PROCEDURE

1.

Turn the ignition switch ON.

2.

Perform self-diagnosis for “ABS” with CONSULT-III.

Is DTC “C1199” detected?

YES

>> Proceed to diagnosis procedure. Refer to

BRC-91, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000005234604

1.

CHECK CONNECTOR

1.

Turn the ignition switch OFF.

2.

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

3.

Disconnect vacuum sensor harness connector.

4.

Check terminal for deformation, disconnection, looseness, etc.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace error-detected parts.

2.

CHECK BRAKE BOOSTER

Check brake booster. Refer to

BR-13, "Inspection"

.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Replace brake booster. Refer to

BR-33, "Exploded View"

.

3.

CHECK VACUUM PIPING

Check vacuum piping. Refer to

BR-38, "Inspection"

.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Replace vacuum hose. Refer to

BR-37, "Exploded View"

.

4.

CHECK VACUUM SENSOR HARNESS

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

DTC

Display item

Malfunction detected condition

Possible cause

C1199

BRAKE BOOSTER

When negative pressure of brake booster becomes close
to zero while the engine is running.

• Harness or connector
• Vacuum sensor
• Brake booster
• Vacuum hose

BRC-92

< DTC/CIRCUIT DIAGNOSIS >

[VDC/TCS/ABS]

C1199 VACUUM SENSOR

Is the inspection result normal?

YES

>> Replace brake booster. Refer to

BR-33, "Exploded View"

.

NO

>> Repair or replace error-detected parts.

Special Repair Requirement

INFOID:0000000005528350

1.

ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION

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

BRC-9, "ADJUSTMENT OF STEERING ANGLE SENSOR NEU-

TRAL POSITION : Description"

.

>> END

Vacuum sensor

ABS actuator and electric unit

(control unit)

Continuity

Connector

Terminal

Connector

Terminal

E49

1

E41

12

Existed

2

15

3

19

C119A VACUUM SENSOR

BRC-93

< DTC/CIRCUIT DIAGNOSIS >

[VDC/TCS/ABS]

C

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G

H

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B

BRC

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O

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C119A VACUUM SENSOR

Description

INFOID:0000000005234606

The vacuum sensor converts the vacuum pressure to an electric signal and transmits it to the ABS actuator
and electric unit (control unit).

DTC Logic

INFOID:0000000005234607

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

DTC REPRODUCTION PROCEDURE

1.

Turn the ignition switch ON.

2.

Perform self-diagnosis for “ABS” with CONSULT-III.

Is DTC “C119A” detected?

YES

>> Proceed to diagnosis procedure. Refer to

BRC-93, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000005234608

1.

CHECK CONNECTOR

1.

Turn the ignition switch OFF.

2.

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

3.

Disconnect vacuum sensor harness connector.

4.

Check terminal for deformation, disconnection, looseness, etc.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace error-detected parts.

2.

CHECK VACUUM SENSOR POWER SUPPLY CIRCUIT

1.

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

2.

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

3.

Turn the ignition switch ON.

CAUTION:

Never start the engine.

4.

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

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace error-detected parts.

3.

CHECK VACUUM SENSOR HARNESS

1.

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

DTC

Display item

Malfunction detected condition

Possible cause

C119A

VACUUM SEN VOLT

When the voltage supplied to vacuum sensor is outside
the range of 5 V

±

0.25 V.

ABS actuator and electric unit
(control unit)

ABS actuator and electric unit (control unit)

—

Voltage

Connector

Terminal

E41

19

Ground

Approx. 0 V

ABS actuator and electric unit (control unit)

—

Voltage

Connector

Terminal

E41

19

Ground

5 V

±

0.25 V

BRC-94

< DTC/CIRCUIT DIAGNOSIS >

[VDC/TCS/ABS]

C119A VACUUM SENSOR

2.

Check the continuity between vacuum sensor harness connector and ABS actuator and electric unit (con-
trol unit) harness connector.

Is the inspection result normal?

YES

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

NO

>> Repair or replace error-detected parts.

Special Repair Requirement

INFOID:0000000005528351

1.

ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION

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

BRC-9, "ADJUSTMENT OF STEERING ANGLE SENSOR NEU-

TRAL POSITION : Description"

.

>> END

Vacuum sensor

ABS actuator and electric unit

(control unit)

Continuity

Connector

Terminal

Connector

Terminal

E49

3

E41

19

Existed