Nissan Xterra. Instruction — part 93
DIAGNOSIS SYSTEM [ABS ACTUATOR AND ELECTRIC UNIT (CONTROL
UNIT)]
BRC-29
< SYSTEM DESCRIPTION >
[TYPE 1]
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DIAGNOSIS SYSTEM [ABS ACTUATOR AND ELECTRIC UNIT (CONTROL
UNIT)]
CONSULT Function (ABS)
INFOID:0000000009482581
FUNCTION
CONSULT can display each diagnostic item using the following direct diagnostic modes.
SELF DIAGNOSTIC RESULT
Operation Procedure
1. Before performing the self-diagnosis, start engine and drive vehicle at 30 km/h (19 MPH) or more for
approximately 1 minute.
How to Erase Self-diagnosis Results
1. After erasing DTC memory, start engine and drive vehicle at 30 km/h (19 MPH) or more for approximately
1 minute as the final inspection, and make sure that the ABS warning lamp, VDC OFF indicator lamp,
SLIP indicator lamp and brake warning lamp turn OFF.
CAUTION:
If memory cannot be erased, perform applicable diagnosis.
NOTE:
• When the wheel sensor malfunctions, after inspecting the wheel sensor system, the ABS warning lamp,
SLIP indicator lamp and brake warning lamp will not turn OFF even when the system is normal unless
the vehicle is driving at approximately 30 km/h (19 MPH) or more for approximately 1 minute.
• Brake warning lamp will turn ON in case of parking brake operation (when switch is ON) or of brake fluid
level switch operation (when brake fluid is insufficient).
• VDC OFF switch should not stay “ON” position.
Display Item List
DATA MONITOR
Direct Diagnostic Mode
Description
ECU Identification
The ABS actuator and electric unit (control unit) part number is displayed.
Self Diagnostic Result
The ABS actuator and electric unit (control unit) self diagnostic results are displayed.
Data Monitor
The ABS actuator and electric unit (control unit) input/output data is displayed in real time.
Active Test
The ABS actuator and electric unit (control unit) activates outputs to test components.
Work support
The settings for ABS actuator and electric unit (control unit) functions can be changed.
CAN Diag Support Mntr
The result of transmit/receive diagnosis of CAN communication is displayed.
Item
(Unit)
Data monitor item selection
Remarks
ECU INPUT
SIGNALS
MAIN
SIGNALS
SELECTION
FROM MENU
FR LH SENSOR
(km/h, mph)
×
×
×
Wheel speed calculated by front LH
wheel sensor signal is displayed.
FR RH SENSOR
(km/h, mph)
×
×
×
Wheel speed calculated by front RH
wheel sensor signal is displayed.
RR LH SENSOR
(km/h, mph)
×
×
×
Wheel speed calculated by rear LH
wheel sensor signal is displayed.
RR RH SENSOR
(km/h, mph)
×
×
×
Wheel speed calculated by rear RH
wheel sensor signal is displayed.
DECEL G-SEN
(G)
×
×
×
Longitudinal acceleration detected
by decel G-sensor is displayed.
BRC-30
< SYSTEM DESCRIPTION >
[TYPE 1]
DIAGNOSIS SYSTEM [ABS ACTUATOR AND ELECTRIC UNIT (CONTROL
UNIT)]
FR RH IN SOL
(ON/OFF)
–
×
×
Front RH IN ABS solenoid (ON/
OFF) status is displayed.
FR RH OUT SOL
(ON/OFF)
–
×
×
Front RH OUT ABS solenoid (ON/
OFF) status is displayed.
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 displayed.
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 displayed.
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 displayed.
EBD WARN LAMP
(ON/OFF)
–
–
×
Brake warning lamp (ON/OFF) sta-
tus 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)
–
×
×
OFF Lamp (ON/OFF) status is dis-
played.
OFF SW
(ON/OFF)
×
×
×
VDC OFF switch (ON/OFF) status
is displayed.
SLIP LAMP
(ON/OFF)
–
×
×
SLIP indicator lamp (ON/OFF) sta-
tus is displayed.
BATTERY VOLT
(V)
×
×
×
Voltage supplied to ABS actuator
and electric unit (control unit) is dis-
played.
ENGINE SPEED
(rpm)
×
×
×
Engine speed judged by CAN com-
munication signal is displayed.
YAW RATE SEN
(d/s)
×
×
×
Yaw rate detected by yaw rate sen-
sor is displayed.
CV1
(ON/OFF)
–
–
×
Front side switch-over solenoid
valve (cut valve) (ON/OFF) status is
displayed.
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) sta-
tus is displayed.
SV2
(ON/OFF)
–
–
×
Rear side switch-over solenoid
valve (suction valve) (ON/OFF) sta-
tus 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-31
< SYSTEM DESCRIPTION >
[TYPE 1]
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BRC
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×: 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.
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 communication sig-
nal 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.
PRESS SENSOR
(bar)
×
–
×
Brake pressure detected by pres-
sure sensor is displayed.
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.
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-12, "ADJUSTMENT OF STEERING AN-
GLE SENSOR NEUTRAL POSITION : Description"
DECEL G SEN CALIBRATION
Decel G sensor calibration can be performed. Refer to
"CALIBRATION OF DECEL G SENSOR : Description"
.
BRC-32
< SYSTEM DESCRIPTION >
[TYPE 1]
DIAGNOSIS SYSTEM [ABS ACTUATOR AND ELECTRIC UNIT (CONTROL
UNIT)]
• 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 the “MAIN SIGNALS” for each test item. In addi-
tion, when performing an active test of the VDC/TCS function, select the item menu 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.
*: 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 operate as shown in table below.
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*
—
—
—
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
FR LH ABS SOLENOID (ACT)
FR LH IN SOL
—
—
—
Off
Off
Off
FR LH OUT SOL
—
—
—
Off
Off
Off
RR RH ABS SOLENOID (ACT)
RR RH IN SOL
—
—
—
Off
Off
Off
RR RH OUT SOL
—
—
—
Off
Off
Off
RR LH ABS SOLENOID (ACT)
RR LH IN SOL
—
—
—
Off
Off
Off
RR LH OUT SOL
—
—
—
Off
Off
Off
Operation
On
Off
MOTOR RELAY
On
Off
ACTUATOR RLY
On
On
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