Subaru Legacy IV (2008 year). Manual - part 947

VDC(diag)-103

General Diagnostic Table

VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)

Steering wheel drag while driving

• Brake caliper
• Brake pad
• Disc rotor
• Wheel alignment
• Road surface (uneven)
• Road with crowns or banks
• Suspension play or fatigue
(reduced damping)
• Tire specifications, tire wear and
air pressures

VDC operates while driving normally.

• VDCCM&H/U
• Defective ABS wheel speed sensor or sensor gap
• Defective steering angle sensor or improper neu-
tral position
• Defective yaw rate & lateral G sensor or improper
installation
• Wheel alignment
• Road surface (uneven)
• Road with crowns or banks
• Suspension play or fatigue (reduced damping)
• Tire specifications, tire wear and air pressures
• Incorrect wiring or piping connections
• Power steering system

VDC OFF indicator light does not illu-
minate when the VDC OFF switch is
depressed.

NOTE:
When pressing VDC OFF switch for
10 seconds or more, VDC OFF indi-
cator light goes off and cannot oper-
ate any more. When turning the
ignition switch from OFF to ON, the
previous status is restored.

• Harness
• Combination meter
• VDC OFF switch

Symptom

Main probable cause

Other probable cause

VDC(diag)-104

General Diagnostic Table

VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)

BR-2

General Description

BRAKE

1. General Description

A: SPECIFICATION

Model

2.5 i, -BASE, 2.5 i-LTD,

3.0 R,

OUTBACK 2.5i, -BASE, -LTD, -LLB,

OUTBACK 3.0 R -LTD, OUTBACK

2.5XT -LTD

2.5GT-LTD, 3.0 R-LTD, 2.5GT-B

Front disc
brake

Size

16-inch type

17-inch type

Type

Disc (Floating type, ventilated)

Effective disc diameter

mm (in)

244 (4.61)

261 (10.28)

Disc thickness × Diameter

mm (in)

24 × 294 (0.94 × 11.57)

30 × 316 (1.18 × 12.44)

Effective cylinder diameter

42.8 (1.685) × 2

Pad dimensions
(Length × Width × Thickness)

mm (in)

117.8 × 50.5 × 11.0

(4.638 × 1.988 × 0.433)

130.0 × 53.5 × 11.0

(5.118 × 2.106 × 0.433)

Clearance adjustment

Automatic adjustment

Rear disc
brake

Size

15-inch type

Type

Disc (Floating type,

solid)

Disc (Floating type,

ventilated)

Effective disc diameter

mm (in)

238 (9.37)

254 (10.0)

Disc thickness × Diameter

mm (in)

10 × 274 (0.39 × 10.79)

18 × 290 (0.71 × 11.42)

Effective cylinder diameter

mm (in)

38.1 (1.500)

Pad dimensions
(Length × Width × Thickness)

mm (in)

92.0 × 33.0 × 9.0

(3.622 × 1.299 × 0.354)

82.4 × 33.7 × 9.0

(3.244 × 1.327 × 0.354)

Clearance adjustment

Automatic adjustment

Master
cylinder

Type

Tandem

Effective diameter

mm (in)

23.8 (15/16)

Reservoir type

Sealed type

Brake fluid reservoir capacity cm

(cu in)

205 (12.51)

Brake
booster

Type

Vacuum suspended

Effective diameter

mm (in)

208 + 229 (8.19 + 9.02)

Brake line

Dual circuit system

Brake fluid

CAUTION:
• Avoid mixing brake fluid of different brands to
prevent fluid performance from degrading.
• When filling with brake fluid, be careful not to al-
low any dust to enter the reservoir.
• Use new SUBARU genuine brake fluid when re-
placing or refilling the fluid.

FMVSS No. 116, DOT3, or DOT4

BR-3

General Description

BRAKE

NOTE:
Refer to “PB” section for parking brake specifications. <Ref. to PB-2, SPECIFICATION, General Descrip-
tion.>

Contents

Specification

Service limit

Front brake

Pad thickness

mm (in)

Except for 17-inch type

11 (0.43)

1.5 (0.059)

17-inch type

11 (0.43)

1.5 (0.059)

Disc thickness

mm (in)

Except for 17-inch type

24 (0.94)

22 (0.87)

17-inch type

30 (1.18)

28 (1.10)

Disc runout

mm (in)

—

0.05 (0.0020)

Rear brake
(Disc type)

Pad thickness

mm (in)

Solid disc

9.0 (0.354)

1.5 (0.059)

Ventilated disc

9.0 (0.354)

1.5 (0.059)

Disc thickness

mm (in)

Solid disc

10 (0.39)

8.5 (0.335)

Ventilated disc

18 (0.71)

16 (0.63)

Disc runout

mm (in)

—

0.05 (0.0020)

Parking brake

Inside diameter

mm (in)

170 (6.69)

171 (6.73)

Lining thickness

mm (in)

3.2 (0.126)

1.5 (0.059)

Lever stroke

5 — 6 notches/200 N (20 kgf, 45 lb)

Brake pedal force

N (kgf, lb)

Fluid pressure

kPa (kgf/cm

, psi)

Brake booster

Brake fluid pressure with engine stopped

147 (15, 33)

545 (6, 79)

294 (30, 66)

1,564 (16, 227)

Brake fluid pressure with engine running and vac-
uum pressure at 66.7 kPa (500 mmHg, 19.69 inHg)

147 (15, 33)

6,003 (61, 870)

294 (30, 66)

11,273 (115, 1,635)

Brake pedal

Free play

mm (in)

0.5 — 2 (0.02 — 0.08)
[When pulling the brake pedal upward with a force of less than 10 N (1 kgf, 2 lb)]

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