Nissan Xterra. Manual — part 90

VDC

BRC-17

< SYSTEM DESCRIPTION >

[TYPE 1]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

N

O

P

System Description

INFOID:0000000009482566

• Vehicle Dynamics Control system detects driver

′s steering operation amount and brake pedal travel from

steering angle sensor. 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 is available.

BRC-18

< SYSTEM DESCRIPTION >

[TYPE 1]

VDC

Component Parts Location

INFOID:0000000009482567

AWFIA0988GB

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 ca-
ble) M47
(Steering wheel removed for clarity)

6.

Yaw rate/side/decel G sensor B73

VDC

BRC-19

< SYSTEM DESCRIPTION >

[TYPE 1]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

N

O

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Component Description

INFOID:0000000009482568

7.

M226 rear axle

8.

Rear wheel sensor LH C11
Rear wheel sensor RH C10

9.

C200 rear axle

10. Back-up lamp switch F69

11.

VDC OFF switch M154

12. Stop lamp switch E38 (with M/T)

Stop lamp switch E39 (with A/T)

Component parts

Reference

ABS actuator and electric unit (control unit)

Pump

BRC-45, "Description"

Motor

Actuator relay

BRC-61, "Description"

Solenoid valve

BRC-54, "Description"

VDC switch-over valve
(CV1, CV2, SV1, SV2)

BRC-72, "Description"

Wheel sensor

BRC-34, "Description"

Yaw rate/side/decel G sensor

BRC-47, "Description"

Stop lamp switch

BRC-52, "Description"

Steering angle sensor

BRC-63, "Description"

Brake fluid level switch

BRC-66, "Description"

VDC OFF switch

BRC-76, "Description"

ABS warning lamp

BRC-78, "Description"

Brake warning lamp

BRC-79, "Description"

VDC OFF indicator lamp

BRC-80, "Description"

SLIP indicator lamp

BRC-82, "Description"

BRC-20

< SYSTEM DESCRIPTION >

[TYPE 1]

TCS

TCS

System Diagram

INFOID:0000000009482569

System Description

INFOID:0000000009482570

• 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 is available.

AWFIA0589GB