Nissan Pathfinder (2009 year). Instruction — part 99
VDC
BRC-17
< FUNCTION DIAGNOSIS >
[TYPE 1]
C
D
E
G
H
I
J
K
L
M
A
B
BRC
N
O
P
VK56DE
AWFIA0461GB
2009 Pathfinder
BRC-18
< FUNCTION DIAGNOSIS >
[TYPE 1]
VDC
HYDRAULIC CIRCUIT DIAGRAM
System Description
INFOID:0000000003937720
• Vehicle Dynamics Control system detects driver
′
s steering operation amount and brake pedal travel from
steering angle sensor and pressure sensors. Using information from yaw rate/side/decel G sensor and
wheel sensor, VDC judges driving condition (conditions of under steer and over steer) to improve vehicle
driving stability by controlling brake application to 4 wheels and engine output.
• During VDC operation, it informs driver of system operation by flashing SLIP indicator lamp.
• Electrical system diagnosis by CONSULT-III is available.
• Active booster, delta stroke sensor, front pressure sensor, rear pressure sensor and stop lamp relay are
available on vehicles equipped with VK56DE only.
Component Parts Location
INFOID:0000000003937721
VQ40DE
WFIA0357E
2009 Pathfinder
VDC
BRC-19
< FUNCTION DIAGNOSIS >
[TYPE 1]
C
D
E
G
H
I
J
K
L
M
A
B
BRC
N
O
P
AWFIA0454GB
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
7.
Rear wheel sensor LH C13
8.
Rear wheel sensor RH C13
9.
VDC OFF switch M154
10.
Stop lamp switch E38
2009 Pathfinder
BRC-20
< FUNCTION DIAGNOSIS >
[TYPE 1]
VDC
VK56DE
AWFIA0455GB
1.
Front wheel sensor LH E18
Front wheel sensor RH E117
2.
Delta stroke sensor E114
3.
Active booster E49
4.
Rear pressure sensor E32
5.
Front pressure sensor E31
6.
Brake fluid level switch E21
7.
ABS actuator and electric unit (control
unit) E127
8.
Combination meter M24
9.
Steering angle sensor (behind spiral
cable) M47
2009 Pathfinder
VDC
BRC-21
< FUNCTION DIAGNOSIS >
[TYPE 1]
C
D
E
G
H
I
J
K
L
M
A
B
BRC
N
O
P
Component Description
INFOID:0000000003937722
*: With VK56DE only
10.
Yaw rate/side/decel G sensor B73
11.
Rear wheel sensor LH C13
12.
Rear wheel sensor RH C13
13.
VDC OFF switch M154
14. Stop lamp switch E38
15.
Stop lamp relay E12
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
Steering angle sensor
VDC OFF switch
ABS warning lamp
Brake warning lamp
VDC OFF indicator lamp
SLIP indicator lamp
Front pressure sensor*
Rear pressure sensor*
Active booster*
Delta stroke sensor*
2009 Pathfinder
BRC-22
< FUNCTION DIAGNOSIS >
[TYPE 1]
TCS
TCS
System Diagram
INFOID:0000000003937723
VQ40DE
AWFIA0453GB
2009 Pathfinder
TCS
BRC-23
< FUNCTION DIAGNOSIS >
[TYPE 1]
C
D
E
G
H
I
J
K
L
M
A
B
BRC
N
O
P
VK56DE
System Description
INFOID:0000000003937724
• Traction Control System is a function that electronically controls engine torque, brake fluid pressure and A/T
gear position to ensure the optimum slippage ratio at drive wheels by computing wheel speed signals from 4
wheel sensors. When ABS actuator and electric unit (control unit) detects a spin at drive wheels (rear
wheels), it compares wheel speed signals from all 4 wheels. At this time, LH and RH rear brake fluid pres-
sure are controlled, while fuel being cut to engine and throttle valve being closed to reduce engine torque by
the control unit. Further more, throttle position is continuously controlled to ensure the optimum engine
torque at all times.
• During TCS operation, it informs driver of system operation by flashing SLIP indicator lamp.
• Electrical system diagnosis by CONSULT-III is available.
• Active booster, delta stroke sensor, front pressure sensor, rear pressure sensor and stop lamp relay are
available on vehicles equipped with VK56DE only.
AWFIA0461GB
2009 Pathfinder
BRC-24
< FUNCTION DIAGNOSIS >
[TYPE 1]
ABS
ABS
System Diagram
INFOID:0000000003937725
System Description
INFOID:0000000003937726
• Anti-Lock Braking System is a function that detects wheel revolution while braking, electronically controls
braking force, and prevents wheel locking during sudden braking. It improves handling stability and maneu-
verability for avoiding obstacles.
• Electrical system diagnosis by CONSULT-III is available.
AWFIA0014GB
2009 Pathfinder
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