Nissan Maxima. Instruction — part 250
DIAGNOSIS SYSTEM [ABS ACTUATOR AND ELECTRIC UNIT (CONTROL
UNIT)]
BRC-21
< SYSTEM DESCRIPTION >
[VDC/TCS/ABS]
C
D
E
G
H
I
J
K
L
M
A
B
BRC
N
O
P
DIAGNOSIS SYSTEM [ABS ACTUATOR AND ELECTRIC UNIT (CONTROL
UNIT)]
CONSULT Function (ABS)
INFOID:0000000010049037
FUNCTION
CONSULT can display each diagnostic item using the following diagnostic test modes.
SELF DIAGNOSTIC RESULT MODE
Operation Procedure
Before performing the self-diagnosis, start engine and drive vehicle at 30 km/h (19 MPH) or more for approxi-
mately 1 minute.
How to Erase Self-Diagnosis Results
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 indi-
cator 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 in “ON” position.
Display Item List
DATA MONITOR
Display Item List
Diagnostic test mode
Function
ECU Identification
ABS actuator and electric unit (control unit) part number can be read.
Self Diagnostic Result
Displays ABS actuator and electric unit (control unit) self-diagnosis results.
Data Monitor
Displays ABS actuator and electric unit (control unit) input/output data in real time.
Active Test
Operation of electrical loads can be checked by sending drive signals to them.
Work support
Supports inspections and adjustments. Commands are transmitted to the ABS actuator and
electric unit (control unit) for setting the status suitable for required operation, input/output sig-
nals are received from the ABS actuator and electric unit (control unit) and received data is dis-
played.
CAN Diag Support Monitor
The result of transmit/receive diagnosis of CAN communication can be read.
Item
(Unit)
Data monitor item selection
Remarks
ECU INPUT
SIGNALS
MAIN
SIGNALS
SELECTION
FROM MENU
FR LH SENSOR
(km/h, mph)
×
×
×
Wheel speed (km/h, mph) calculated by front LH
wheel sensor signal is displayed.
FR RH SENSOR
(km/h, mph)
×
×
×
Wheel speed (km/h, mph) calculated by front RH
wheel sensor signal is displayed.
RR LH SENSOR
(km/h, mph)
×
×
×
Wheel speed (km/h, mph) calculated by rear LH
wheel sensor signal is displayed.
RR RH SENSOR
(km/h, mph)
×
×
×
Wheel speed (km/h, mph) calculated by rear RH
wheel sensor signal is displayed.
BRC-22
< SYSTEM DESCRIPTION >
[VDC/TCS/ABS]
DIAGNOSIS SYSTEM [ABS ACTUATOR AND ELECTRIC UNIT (CONTROL
UNIT)]
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
displayed.
FR LH IN SOL
(On/Off)
—
×
×
Front LH IN ABS solenoid (On/Off) status is dis-
played.
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 dis-
played.
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 dis-
played.
RR LH OUT SOL
(On/Off)
—
×
×
Rear LH OUT ABS solenoid (On/Off) status is dis-
played.
EBD WARN LAMP
(On/Off)
—
—
×
EBD 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 dis-
played.
ACTUATOR RLY
(On/Off)
—
×
×
ABS actuator relay signal (On/Off) status is dis-
played.
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.
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, 6)
×
×
×
Gear position (1, 2, 3, 4, 5, 6) while in instruction
mode determined by TCM is displayed.
SLCT LVR POSI
(N/P, R, N/P, D)
×
×
×
Selector lever position judged by PNP switch sig-
nal.
YAW RATE SEN
(d/s)
×
×
×
Yaw rate (d/s) detected by yaw rate sensor is dis-
played.
ACCEL POS SIG
(%)
×
—
×
Throttle valve open/close (%) status judged by
CAN communication signal is displayed.
SIDE G-SENSOR
(m/s
2
)
×
—
×
Lateral acceleration (m/s
2
) detected by side G
sensor is displayed.
STR ANGLE SIG
(deg)
×
—
×
Steering angle (deg) detected by steering angle
sensor is displayed.
PRESS SENSOR
(bar)
×
—
×
Brake fluid pressure detected by pressure 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.
DIAGNOSIS SYSTEM [ABS ACTUATOR AND ELECTRIC UNIT (CONTROL
UNIT)]
BRC-23
< SYSTEM DESCRIPTION >
[VDC/TCS/ABS]
C
D
E
G
H
I
J
K
L
M
A
B
BRC
N
O
P
×: Applicable
–: Not applicable
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 indicator lamp, SLIP indicator
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.
EBD FAIL SIG
(On/Off)
—
—
×
EBD fail signal (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)
—
—
×
Cranking condition (On/Off) status is displayed.
FLUID LEV SW
(On/Off)
×
—
×
Brake fluid level switch (On/Off) status is dis-
played.
PARK BRAKE SW
(On/Off)
×
—
×
Parking brake switch (On/Off) status is displayed.
USV[FL-RR]
(On/Off)
—
—
×
Primary side USV solenoid valve (On/Off) status is
displayed.
USV[FR-RL]
(On/Off)
—
—
×
Secondary side USV solenoid valve (On/Off) sta-
tus is displayed.
HSV[FL-RR]
(On/Off)
—
—
×
Primary side HSV solenoid valve (On/Off) status is
displayed.
HSV[FR-RL]
(On/Off)
—
—
×
Secondary side HSV solenoid valve (On/Off) sta-
tus is displayed.
V/R OUTPUT
(On/Off)
—
—
×
Valve relay operation signal (On/Off) status is dis-
played.
M/R OUTPUT
(On/Off)
—
—
×
Motor relay operation signal (On/Off) status is dis-
played.
ENGINE RPM
(tr/min)
×
—
×
Engine speed judged by CAN communication sig-
nal is displayed.
BRC-24
< SYSTEM DESCRIPTION >
[VDC/TCS/ABS]
DIAGNOSIS SYSTEM [ABS ACTUATOR AND ELECTRIC UNIT (CONTROL
UNIT)]
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*
—
—
—
USV[FL-RR]
Off
Off
On*
—
—
—
USV[FR-RL]
Off
Off
On*
—
—
—
HSV[FL-RR]
Off
Off
On*
—
—
—
HSV[FR-RL]
Off
Off
On*
—
—
—
FR LH SOL
FR LH IN SOL
Off
On
On
—
—
—
FR LH OUT SOL
Off
Off
On*
—
—
—
USV[FL-RR]
Off
Off
On*
—
—
—
USV[FR-RL]
Off
Off
On*
—
—
—
HSV[FL-RR]
Off
Off
On*
—
—
—
HSV[FR-RL]
Off
Off
On*
—
—
—
RR RH SOL
RR RH IN SOL
Off
On
On
—
—
—
RR RH OUT SOL
Off
Off
On*
—
—
—
USV[FL-RR]
Off
Off
On*
—
—
—
USV[FR-RL]
Off
Off
On*
—
—
—
HSV[FL-RR]
Off
Off
On*
—
—
—
HSV[FR-RL]
Off
Off
On*
—
—
—
RR LH SOL
RR LH IN SOL
Off
On
On
—
—
—
RR LH OUT SOL
Off
Off
On*
—
—
—
USV[FL-RR]
Off
Off
On*
—
—
—
USV[FR-RL]
Off
Off
On*
—
—
—
HSV[FL-RR]
Off
Off
On*
—
—
—
HSV[FR-RL]
Off
Off
On*
—
—
—
FR RH ABS SOLENOID (ACT)
FR RH IN SOL
—
—
—
Off
Off
Off
FR RH OUT SOL
—
—
—
Off
Off
Off
USV[FL-RR]
—
—
—
Off
Off
Off
USV[FR-RL]
—
—
—
Off
On
On
HSV[FL-RR]
—
—
—
Off
Off
Off
HSV[FR-RL]
—
—
—
Off
On*
Off
FR LH ABS SOLENOID (ACT)
FR LH IN SOL
—
—
—
Off
Off
Off
FR LH OUT SOL
—
—
—
Off
Off
Off
USV[FL-RR]
—
—
—
Off
Off
Off
USV[FR-RL]
—
—
—
Off
On
On
HSV[FL-RR]
—
—
—
Off
Off
Off
HSV[FR-RL]
—
—
—
Off
On*
Off
RR RH ABS SOLENOID (ACT)
RR RH IN SOL
—
—
—
Off
Off
Off
RR RH OUT SOL
—
—
—
Off
Off
Off
USV[FL-RR]
—
—
—
Off
Off
Off
USV[FR-RL]
—
—
—
Off
On
On
HSV[FL-RR]
—
—
—
Off
Off
Off
HSV[FR-RL]
—
—
—
Off
On*
Off
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