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
"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
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