Subaru Legacy IV (2008 year). Service manual — part 947
VDC(diag)-103
General Diagnostic Table
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
Steering wheel drag while driving
• 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
• Incorrect wiring or piping connections
• Power steering system
• 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
3
(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
2
, 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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