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Nissan Titan. Manual - part 32

C1164, C1165, C1166, C1167 CV/SV SYSTEM

BRC-69

< DTC/CIRCUIT DIAGNOSIS >

[VDC/TCS/ABS]

BRC

YES

>> GO TO 2

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

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) connector E125 terminal 32 and ground.

Is the inspection result normal?

YES

>> GO TO 3

>> Repair or replace malfunctioning components.

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

Check continuity between ABS actuator and electric unit (control

unit) connector E125 terminals 16, 47 and ground.

Is the inspection result normal?

YES

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

Refer to

BRC-116, "Removal and Installation"

>> Repair or replace malfunctioning components.

Component Inspection

INFOID:0000000009883687

CHECK ACTIVE TEST

1. Select each test menu item on ”ACTIVE TEST“.

2. On the display, touch “Up”, “ACT UP”, and “ACT KEEP”, and check that the system operates as shown in

the table below.

ABS actuator and electric unit (control unit)

—

Voltage

Connector

Terminal

E125

Ground

Battery voltage

AWFIA0018ZZ

ABS actuator and electric unit (control unit)

—

Continuity

Connector

Terminal

E125

16, 47

Ground

Yes

AWFIA0016ZZ

Operation

ABS solenoid valve (ACT)

ACT UP

ACT KEEP

FR RH ABS SOLENOID (ACT)

FR RH IN SOL

Off

FR RH OUT SOL

Off

CV1

Off

SV1

Off

On*

Off

FR LH ABS SOLENOID (ACT)

FR LH IN SOL

Off

FR LH OUT SOL

Off

CV1

Off

SV1

Off

On*

Off

RR RH ABS SOLENOID (ACT)

RR RH IN SOL

Off

RR RH OUT SOL

Off

CV2

Off

SV2

Off

On*

Off

BRC-70

< DTC/CIRCUIT DIAGNOSIS >

[VDC/TCS/ABS]

C1164, C1165, C1166, C1167 CV/SV SYSTEM

*: On for 1 to 2 seconds after the touch, and then Off

Is the inspection result normal?

YES

>> Inspection End

>> Go to diagnosis procedure. Refer to

BRC-68, "Diagnosis Procedure"

Special Repair Requirement

INFOID:0000000009883688

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-8, "ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL

POSITION : Description"

>> GO TO 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-9, "CALIBRATION OF DECEL G SENSOR : Description"

>> END

RR LH ABS SOLENOID (ACT)

RR LH IN SOL

Off

RR LH OUT SOL

Off

CV2

Off

SV2

Off

On*

Off

Operation

ABS solenoid valve (ACT)

ACT UP

ACT KEEP

C1178, C1181, C1184, C1189 ABS ACTIVE BOOSTER

BRC-71

< DTC/CIRCUIT DIAGNOSIS >

[VDC/TCS/ABS]

BRC

C1178, C1181, C1184, C1189 ABS ACTIVE BOOSTER

Description

INFOID:0000000009883689

The active brake booster consists of a vacuum booster, an active booster control group and a delta stroke

sensor. If a brake booster system malfunction occurs due to loss of vacuum, the delta stroke sensor will signal

the ABS actuator and electric unit (control unit) that a booster malfunction has occurred. The active booster

then applies supplemental force to the master cylinder relative to the amount of force exerted on the brake

pedal.

DTC Logic

INFOID:0000000009883690

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

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-71, "Diagnosis Procedure"

>> Inspection End

Diagnosis Procedure

INFOID:0000000009883691

Regarding Wiring Diagram information, refer to

BRC-92, "Wiring Diagram"

CONNECTOR INSPECTION

1. Turn the ignition switch OFF.

2. Disconnect the active booster and ABS actuator and electric unit (control unit) connectors.

3. Inspect the terminals for deformation, disconnection, looseness, or damage.
Is the inspection result normal?

YES

>> GO TO 2

>> Repair connector.

ACTIVE BOOSTER CIRCUIT INSPECTION

DTC

Display item

Malfunction detected condition

Possible cause

C1178

ABS ACTIVE BOOSTER SV
NG

Active booster solenoid is malfunctioning, or signal line of
active booster servo is open or shorted.

• Harness or connector
• Active booster
• ABS actuator and electric unit

(control unit)

C1181

ABS ACTIVE BOOSTER RE-
SPONSE NG

Active booster response is malfunctioning, or signal line
of active booster response is open or shorted.

C1184

ABS BRAKE RELEASE SW
NG

Brake release switch is malfunctioning, or signal line of
brake release switch is open or shorted.

C1189

ABS BRAKE BOOSTER DE-
FECT

Brake booster is defective or malfunctioning.

Self-diagnosis results

ABS ACTIVE BOOSTER SV NG

ABS ACTIVE BOOSTER RESPONSE NG

ABS BRAKE RELEASE SW NG

ABS BRAKE BOOSTER DEFECT

BRC-72

< DTC/CIRCUIT DIAGNOSIS >

[VDC/TCS/ABS]

C1178, C1181, C1184, C1189 ABS ACTIVE BOOSTER

1. Measure the continuity between ABS actuator and electric unit

(control unit) connector E125 (A) and active booster connector

E49 (B).

2. Measure the continuity between ABS actuator and electric unit (control unit) connector E125 (A) and body

ground.

Is the inspection result normal?

YES

>> GO TO 3

>> Repair or replace harness or connector.

ACTIVE BOOSTER INSPECTION

1. Reconnect the active booster and ABS actuator and electric unit (control unit) connectors.

2. Perform the active booster component inspection. Refer to

BRC-72, "Component Inspection"

Is the inspection result normal?

YES

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

BRC-116, "Removal and Instal-

lation"

>> Replace the active booster. Refer to

BR-27, "Removal and Installation"

Component Inspection

INFOID:0000000009883692

CHECK DATA MONITOR

Use “DATA MONITOR” to check if the status of “RELEASE SWITCH NO” and “RELEASE SWITCH NC” is nor-

mal.

Is the inspection result normal?

YES

>> Inspection End

>> Go to diagnosis procedure. Refer to

BRC-71, "Diagnosis Procedure"

Special Repair Requirement

INFOID:0000000009883693

ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION

ABS actuator and electric unit

(control unit)

Active booster

Continuity

Connector

Terminal

Connector

Terminal

A: E125

B: E49

Yes

ABS actuator and electric unit (control

unit)

—

Continuity

Connector

Terminal

A: E125

Ground

AWFIA0028ZZ

Condition

RELEASE SWITCH NO

(DATA MONITOR)

RELEASE SWITCH NC

(DATA MONITOR)

When brake pedal is depressed.

OFF

When brake pedal is released.

OFF

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