Nissan Titan. Manual - part 21

DIAGNOSIS SYSTEM [ABS ACTUATOR AND ELECTRIC UNIT (CONTROL 

UNIT)]

BRC-25

< SYSTEM DESCRIPTION >

[VDC/TCS/ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

N

O

P

FR RH IN SOL
(On/Off)

–

×

×

Front RH IN ABS solenoid (On/Off) status is dis-
played.

FR RH OUT SOL
(On/Off)

–

×

×

Front RH OUT ABS solenoid (On/Off) status is dis-
played.

FR LH IN SOL
(On/Off)

–

×

×

Front LH IN ABS solenoid (On/Off) status is displayed.

FR LH OUT SOL
(On/Off)

–

×

×

Front LH OUT ABS solenoid (On/Off) status is dis-
played.

RR RH IN SOL
(On/Off)

–

×

×

Rear RH IN ABS solenoid (On/Off) status is displayed.

RR RH OUT SOL
(On/Off) 

–

×

×

Rear RH OUT ABS solenoid (On/Off) status is dis-
played.

RR LH IN SOL
(On/Off)

–

×

×

Rear LH IN ABS solenoid (On/Off) status is displayed.

RR LH OUT SOL
(On/Off)

–

×

×

Rear LH OUT ABS solenoid (On/Off) status is dis-
played.

EBD WARN LAMP
(On/Off)

–

–

×

Brake warning lamp (On/Off) status is displayed.

STOP LAMP SW
(On/Off)

×

×

×

Stop lamp switch (On/Off) status is displayed.

MOTOR RELAY
(On/Off)

–

×

×

ABS motor relay signal (On/Off) status is displayed.

ACTUATOR RLY
(On/Off)

–

×

×

ABS actuator relay signal (On/Off) status is displayed.

ABS WARN LAMP
(On/Off)

–

×

×

ABS warning lamp (On/Off) status is displayed.

OFF LAMP
(On/Off)

–

×

×

VDC OFF Lamp (On/Off) status is displayed.

OFF  SW
(On/Off)

×

×

×

VDC OFF switch (On/Off) status is displayed.

SLIP LAMP
(On/Off)

–

×

×

SLIP indicator lamp (On/Off) status is displayed.

BATTERY VOLT
(V)

×

×

×

Voltage (V) supplied to ABS actuator and electric unit 
(control unit) is displayed.

GEAR
(1, 2, 3, 4, 5)

×

×

×

Gear position (1, 2, 3, 4, 5) judged by transmission 
range switch signal is displayed.

SLCT LVR POSI
(P, N, D)

×

×

×

Shift position (P, N, D) judged by transmission range 
switch signal.

ENGINE SPEED
(rpm)

×

×

×

Engine speed (rpm) judged by CAN communication 
signal is displayed.

YAW RATE SEN
(d/s)

×

×

×

Yaw rate (d/s) detected by yaw rate sensor is dis-
played.

R POSI SIG
(On/Off)

–

–

×

Reverse shift position (On/Off) judged by transmis-
sion range switch signal.

N POSI SIG
(On/Off)

–

–

×

Shift position judged by transmission range switch 
signal.

P POSI SIG
(On/Off)

–

–

×

Shift position judged by transmission range switch 
signal.

CV1
(On/Off)

–

–

×

Front side switch-over solenoid valve (cut valve) (On/
Off) status is displayed.

Item

(Unit)

Data monitor item selection

Remarks

ECU INPUT

SIGNALS

MAIN

SIGNALS

SELECTION

FROM MENU

BRC-26

< SYSTEM DESCRIPTION >

[VDC/TCS/ABS]

DIAGNOSIS SYSTEM [ABS ACTUATOR AND ELECTRIC UNIT (CONTROL 

UNIT)]

CV2
(On/Off)

–

–

×

Rear side switch-over solenoid valve (cut-valve) (On/
Off) status is displayed.

SV1
(On/Off)

–

–

×

Front side switch-over solenoid valve (suction valve) 
(On/Off) status is displayed.

SV2
(On/Off)

–

–

×

Rear side switch-over solenoid valve (suction valve) 
(On/Off) status is displayed.

2WD/4WD
(2WD/4WD)

–

–

×

It recognizes on software whether it is 2WD and 
whether it is in 4WD state.

ACCEL POS SIG
(%)

×

–

×

Throttle valve open/close status judged by CAN com-
munication signal is displayed.

SIDE G-SENSOR
 (m/s

2

)

×

–

×

Transverse acceleration detected by side G-sensor is 
displayed. 

STR ANGLE SIG
(deg)

×

–

×

Steering angle detected by steering angle sensor is 
displayed.

BST OPER SIG
(On/Off)

–

–

×

Active booster operation (On/Off) status is displayed.

PRESS SENSOR
(bar)

×

–

×

Brake pressure detected by pressure sensor is dis-
played.

EBD SIGNAL
(On/Off)

–

–

×

EBD operation (On/Off) status is displayed.

ABS SIGNAL
(On/Off)

–

–

×

ABS operation (On/Off) status is displayed.

TCS SIGNAL
(On/Off)

–

–

×

TCS operation (On/Off) status is displayed.

VDC SIGNAL
(On/Off)

–

–

×

VDC operation (On/Off) status is displayed.

ABS FAIL SIG
(On/Off)

–

–

×

ABS fail signal (On/Off) status is displayed.

TCS FAIL SIG
(On/Off)

–

–

×

TCS fail signal (On/Off) status is displayed.

VDC FAIL SIG
(On/Off)

–

–

×

VDC fail signal (On/Off) status is displayed.

CRANKING SIG
(On/Off)

–

–

×

The input state of the key SW START position signal 
is displayed.

FLUID LEV SW
(On/Off)

×

–

×

Brake fluid level switch (On/Off) status is displayed.

PRESS SEN2
(bar)

–

–

×

Brake pressure detected by pressure sensor is dis-
played.

DELTA S SEN
(mm)

–

–

×

The amount of stroke sensor movements in the active 
booster detected by DELTA S SEN is displayed.

RELEASE SW NO
(On/Off)

–

–

×

Release switch signal (On/Off) status is displayed. 
“On” indicates that the brake pedal is depressed. “Off” 
indicates that the brake pedal is released.

RELEASE SW NC
(On/Off)

–

–

×

Release switch signal (On/Off) status is displayed. 
“Off” indicates that the brake pedal is depressed. “On” 
indicates that the brake pedal is released.

OHB FAIL
(On/Off)

–

–

×

OHB fail status is displayed.

HBA FAIL
(On/Off)

–

–

×

HBA fail status is displayed.

Item

(Unit)

Data monitor item selection

Remarks

ECU INPUT

SIGNALS

MAIN

SIGNALS

SELECTION

FROM MENU

DIAGNOSIS SYSTEM [ABS ACTUATOR AND ELECTRIC UNIT (CONTROL 

UNIT)]

BRC-27

< SYSTEM DESCRIPTION >

[VDC/TCS/ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

N

O

P

×: Applicable
–: Not applicable

WORK SUPPORT

ACTIVE TEST

CAUTION:

• Do not perform active test while driving vehicle.

• Make sure to completely bleed air from brake system.

• The active test cannot be performed with the ABS warning lamp, VDC OFF indicator lamp, SLIP indi-

cator lamp or brake warning lamp on.

• ABS warning lamp, VDC OFF indicator lamp, SLIP indicator lamp and brake warning lamp are on

during active test.

NOTE:

• When active test is performed while depressing the pedal, the pedal depression amount will change. This is

normal. (Only solenoid valve and ABS motor.)

• “TEST IS STOPPED” is displayed 10 seconds after operation start.

• After “TEST IS STOPPED” is displayed, to perform test again, touch BACK.

Test Item

SOLENOID VALVE

• When performing an active test of the ABS function, select “MAIN SIGNALS” for each test item.

• For ABS solenoid valve, touch “Up”, “Keep”, and “Down” on the display screen. For ABS solenoid valve

(ACT), touch “Up”, “ACT UP”, “ACT KEEP” and confirm that solenoid valves operate as shown in the table

below.

OHB SIG
(On/Off)

–

–

×

OHB operation (On/Off) status is displayed.

HBA SIG
(On/Off)

–

–

×

HBA operation (On/Off) status is displayed.

STP OFF RLY
(On/Off)

–

–

×

Stop lamp relay signal (On/Off) status is displayed.

DLOCK SW
(ON/OFF)

–

–

×

Condition of differential lock mode switch (ON/OFF) is 
displayed.

DLOCK CHG SW
(ON/OFF)

–

–

×

Condition of differential lock position switch (ON/OFF) 
is displayed.

Item

(Unit)

Data monitor item selection

Remarks

ECU INPUT

SIGNALS

MAIN

SIGNALS

SELECTION

FROM MENU

Conditions

Description

ST ANGLE SENSOR ADJUSTMENT

Steering angle sensor neutral position adjustment can be per-
formed. Refer to 

BRC-8, "ADJUSTMENT OF STEERING ANGLE 

SENSOR NEUTRAL POSITION : Description"

.

DECEL G SEN CALIBRATION

Decel G sensor calibration can be performed. Refer to 

BRC-9, 

"CALIBRATION OF DECEL G SENSOR : Description"

.

Operation

ABS solenoid valve

ABS solenoid valve (ACT)

Up

Keep

Down

Up

ACT UP

ACT KEEP

FR RH SOL

FR RH IN SOL

Off

On

On

—

—

—

FR RH OUT SOL

Off

Off

On*

—

—

—

FR LH SOL

FR LH IN SOL

Off

On

On

—

—

—

FR LH OUT SOL

Off

Off

On*

—

—

—

RR RH SOL

RR RH IN SOL

Off

On

On

—

—

—

RR RH OUT SOL

Off

Off

On*

—

—

—

BRC-28

< SYSTEM DESCRIPTION >

[VDC/TCS/ABS]

DIAGNOSIS SYSTEM [ABS ACTUATOR AND ELECTRIC UNIT (CONTROL 

UNIT)]

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

ABS MOTOR

• Touch “On” and “Off” on screen. Make sure motor relay and actuator relay operates as shown in table below.

BOOSTER DRIVE

• Touch “Up” and “Down” on the screen. Check that booster drive operates as shown in table below.

CAUTION:

Perform active test subject to the conditions below.

• Do not operate brake pedal during active test.

• Make sure the engine revolution is over 500 rpm.

• Make sure the vehicle is not moving.

RR LH SOL

RR LH IN SOL

Off

On

On

—

—

—

RR LH OUT SOL

Off

Off

On*

—

—

—

REAR SOL

RR RH IN SOL

Off

On

On

Off

Off

Off

RR RH OUT SOL

Off

Off

On*

Off

Off

Off

RR LH IN SOL

Off

On

On

Off

Off

Off

RR LH OUT SOL

Off

Off

On*

Off

Off

Off

FR RH ABS SOLENOID (ACT)

FR RH IN SOL

—

—

—

Off

Off

Off

FR RH OUT SOL

—

—

—

Off

Off

Off

CV1

—

—

—

Off

On

On

SV1

—

—

—

Off

On*

Off

FR LH ABS SOLENOID (ACT)

FR LH IN SOL

—

—

—

Off

Off

Off

FR LH OUT SOL

—

—

—

Off

Off

Off

CV1

—

—

—

Off

On

On

SV1

—

—

—

Off

On*

Off

RR RH ABS SOLENOID (ACT)

RR RH IN SOL

—

—

—

Off

Off

Off

RR RH OUT SOL

—

—

—

Off

Off

Off

CV2

—

—

—

Off

On

On

SV2

—

—

—

Off

On*

Off

RR LH ABS SOLENOID (ACT)

RR LH IN SOL

—

—

—

Off

Off

Off

RR LH OUT SOL

—

—

—

Off

Off

Off

CV2

—

—

—

Off

On

On

SV2

—

—

—

Off

On*

Off

Operation

ABS solenoid valve

ABS solenoid valve (ACT)

Up

Keep

Down

Up

ACT UP

ACT KEEP

Operation

On

Off

MOTOR RELAY

On

Off

ACTUATOR RLY

On

On

Operation

Up

Down

BST OPER SIG

On

Off

PRESS SENSOR

50 

± 5 bar

0 bar

PRESS SEN2

50 

± 5 bar

0 bar

STOP LAMP SW

On

Off

STP OFF RLY

Off

Off