Nissan Pathfinder (2011 year). Manual — part 95
ABS
BRC-25
< SYSTEM DESCRIPTION >
[TYPE 1]
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D
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G
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A
B
BRC
N
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Component Description
INFOID:0000000006689842
7.
Rear wheel sensor LH C13
8.
Rear wheel sensor RH C13
9.
VDC OFF switch M154
10. Stop lamp switch E38
Component parts
Reference
ABS actuator and electric unit (control unit)
Pump
Motor
Actuator relay
Solenoid valve
VDC switch-over valve
(CV1, CV2, SV1, SV2)
Wheel sensor
Yaw rate/side/decel G sensor
Stop lamp switch
Steering angle sensor
Brake fluid level switch
VDC OFF switch
ABS warning lamp
Brake warning lamp
VDC OFF indicator lamp
SLIP indicator lamp
2011 Pathfinder
BRC-26
< SYSTEM DESCRIPTION >
[TYPE 1]
EBD
EBD
System Diagram
INFOID:0000000006689838
System Description
INFOID:0000000006245843
• Electric Brake force Distribution is a following function. ABS actuator and electric unit (control unit) detects
subtle slippages between the front and rear wheels during braking. Then it electronically controls the rear
braking force (brake fluid pressure) to reduce rear wheel slippage. Accordingly, it improves vehicle stability.
• Electrical system diagnosis by CONSULT-III is available.
AWFIA0453GB
2011 Pathfinder
EBD
BRC-27
< SYSTEM DESCRIPTION >
[TYPE 1]
C
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G
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K
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M
A
B
BRC
N
O
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Component Parts Location
INFOID:0000000006689843
AWFIA0677GB
1.
Front wheel sensor LH E18
Front wheel sensor RH E117
2.
Brake fluid level switch E21
3.
ABS actuator and electric unit (control
unit) E125
4.
Combination meter M24
5.
Steering angle sensor (behind spiral
cable) M47
6.
Yaw rate/side/decel G sensor B73
2011 Pathfinder
BRC-28
< SYSTEM DESCRIPTION >
[TYPE 1]
EBD
Component Description
INFOID:0000000006689844
7.
Rear wheel sensor LH C13
8.
Rear wheel sensor RH C13
9.
VDC OFF switch M154
10. Stop lamp switch E38
Component parts
Reference
ABS actuator and electric unit (control unit)
Pump
Motor
Actuator relay
Solenoid valve
VDC switch-over valve
(CV1, CV2, SV1, SV2)
Wheel sensor
Yaw rate/side/decel G sensor
Stop lamp switch
Steering angle sensor
Brake fluid level switch
VDC OFF switch
ABS warning lamp
Brake warning lamp
VDC OFF indicator lamp
SLIP indicator lamp
2011 Pathfinder
DIAGNOSIS SYSTEM [ABS ACTUATOR AND ELECTRIC UNIT (CONTROL
UNIT)]
BRC-29
< SYSTEM DESCRIPTION >
[TYPE 1]
C
D
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G
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B
BRC
N
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DIAGNOSIS SYSTEM [ABS ACTUATOR AND ELECTRIC UNIT (CONTROL
UNIT)]
CONSULT-III Function (ABS)
INFOID:0000000006245846
FUNCTION
CONSULT-III 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,
VDC OFF indicator 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 approxi-
mately 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.
Function Test
This mode displays self diagnostic results of ABS system with either an “OK” or “NG”.
Work support
The settings for ABS actuator and electric unit (control unit) functions can be changed.
CAN Diag Support Monitor
The result of transmit/receive diagnosis of CAN communication is diplayed.
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.
2011 Pathfinder
BRC-30
< SYSTEM DESCRIPTION >
[TYPE 1]
DIAGNOSIS SYSTEM [ABS ACTUATOR AND ELECTRIC UNIT (CONTROL
UNIT)]
DECEL G-SEN
(G)
×
×
×
Longitudinal acceleration (G) detected by decel G-
sensor is displayed.
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.
4WD FAIL REQ
(On/Off)
–
–
×
Transfer control unit fail-safe mode (On/Off) is dis-
played.
N POSI SIG
(On/Off)
–
–
×
Shift position judged by transmission range switch
signal.
Item
(Unit)
Data monitor item selection
Remarks
ECU INPUT
SIGNALS
MAIN
SIGNALS
SELECTION
FROM MENU
2011 Pathfinder
DIAGNOSIS SYSTEM [ABS ACTUATOR AND ELECTRIC UNIT (CONTROL
UNIT)]
BRC-31
< SYSTEM DESCRIPTION >
[TYPE 1]
C
D
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A
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BRC
N
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×
: 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 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:
P POSI SIG
(On/Off)
–
–
×
Shift position judged by transmission range switch
signal.
CV1
(On/Off)
–
–
×
Front side VDC switch-over solenoid valve (cut valve)
(On/Off) status is displayed.
CV2
(On/Off)
–
–
×
Rear side VDC switch-over solenoid valve (cut-valve)
(On/Off) status is displayed.
SV1
(On/Off)
–
–
×
Front side VDC switch-over solenoid valve (suction
valve) (On/Off) status is displayed.
SV2
(On/Off)
–
–
×
Rear side VDC 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.
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.
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)
–
–
×
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
2011 Pathfinder
BRC-32
< SYSTEM DESCRIPTION >
[TYPE 1]
DIAGNOSIS SYSTEM [ABS ACTUATOR AND ELECTRIC UNIT (CONTROL
UNIT)]
• When active test is performed while depressing the pedal, the pedal depression amount will change. This is
normal. (solenoid valve and ABS motor only)
Test Item
SOLENOID VALVE
• When performing an active test of the ABS function, select the menu item 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.
• To perform test again, touch BACK.
*: 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.
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*
—
—
—
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
2011 Pathfinder
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