Subaru 2009 IMPREZA User manual

FW-2
Foreword
FOREWORD
1. Foreword
A: FOREWORD
These manuals are used when performing mainte-
nance, repair or diagnosis of Subaru IMPREZA.
Applicable model:
2009MY GE*****, GH*****
The manuals contain the latest information at the
time of publication. Changes in the specifications,
methods, etc. may be made without notice.

HU-2
How to Use This Manuals
HOW TO USE THIS MANUALS
1. How to Use This Manuals
A: HOW TO USE THIS MANUALS
1. STRUCTURE
Each section consists of SCT that are broken down
into SC that are divided into sections for each com-
ponent. The specification, maintenance and other
information for the components are included, and
the diagnostic information has also been added
where necessary.
2. CONTENTS
The first page has an index with tabs.

HU-3
How to Use This Manuals
HOW TO USE THIS MANUALS
3. COMPONENT
Illustrations are provided for each component. The information necessary for repair work (tightening torque,
grease up points, etc.) is described on these illustrations. Information is described using symbol.
To order parts, refer to parts catalogue.
Example:
HU-00017
(14)
(9)
(8)
(7)
(6)
(10)
(4) (10)
(22)
(11)
(19)
(17)
(15)
(13)
(12)
(18)
(16)
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(11)
(10)
(9)
(12)
(13)
(19)
(18)
(20)
(17)
(16)
(24)
(10)
(25)
(5)
(4)
(4)
(4)
(3)
(3)
(3)
(2)
(1)
(21)
(15)
(23)
T7
T2
T2
T2
T2
T2
T2
T4
T5
T5
T8
T6
T6
T6
T11
T10
T1
T1
T3
T3
T3
T1
T9
T4
T5
T5 T3
T4
T3
T2
T4
T2
T1
T3
(20)
(21)
(23)
(22)
(10)
(24)
(25)
(26)
(35)
(34)
(27)
(14)
(28)
(29)
(31)
(32)
(37)
(30)
(33)
(36)
T3
T2
T1 ....
,
:Selective part
:Replacement part
:Sealing point
:Should be lubricated with oil.
:Should be lubricated with grease.
: Tightening torque

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HOW TO USE THIS MANUALS
4. SPECIFICATION
If necessary, specifications are also included.
5. INSPECTION
Inspections to be carried out before and after maintenance are included.
6. MAINTENANCE
• Maintenance instructions for serviceable parts describe work area and detailed step with illustration. It also
describes the use of special tool, tightening torque, caution for each procedure.
• If many serviceable parts are included in one service procedure, appropriate reference is provided for each
parts.
Example:
(A) Component (D) Cautions (G) Tightening torque
(B) Process (E) Tool number of special tool (H) Illustration
(C) Reference (F) Name of special tool
HU-00041
1) Remove the manual transmission assembly
from vehicie. <Ref. to MT-33, REMOVAL, Manual
Transmission Assembly.>
15.Main Shaft
A: REMOVAL
11) Tighten the lock nuts to the specified torque us-
ing ST1 and ST2.
NOTE:
Secure the lock nuts in two places after tightening.
ST1 498937000 TRANSMISSION HOLDER
(A)
(B)
(C)
(D)
(G)
(E) (F)
(H)
Tightening torque:
120 N m (12.2 kgf-m, 88.5 ft-lb)
ST1
ST2
ST2 499987003 SOCKET WRENCH (35)

HU-5
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HOW TO USE THIS MANUALS
7. DIAGNOSIS
Tables showing a step-by-step process make it
easy to conduct diagnosis.
8. SI UNITS
Measurements in these manuals are according to
the SI units. Metric and yard/pound measurements
are also included.
Example:
Tightening torque:
45 N·m (4.6 kgf-m, 33.2 ft-lb)

HU-6
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HOW TO USE THIS MANUALS
9. EXPLANATION OF TERMINOLOGY
•List
AAI : Air Assist Injection HID : High-Intensity Discharge
AAR : Angular Adjusted Roller H/U : Hydraulic Unit
A/B : Airbag IG : Ignition
ABS : Anti-lock Brake System IN : Intake
A/C : Air Conditioner INT : Intermittent
AC : Angular Contact I/O : Input / Output
ACC : Accessory ISC : Idle Speed Control
A/F : Air Fuel Ratio LAN : Local Area Network
ALT : Generator LCD : Liquid Crystal Display
ASSY : Assembly LED : Light Emitting Diode
AT : Automatic Transmission LH : LH (Left Hand)
ATF : Automatic Transmission Fluid LSD : Limited Slip Differential
AVCS : Active Valve Control System M/B : Main Fuse & Relay Box
AWD : All Wheel Drive MFI : Multi Point Injection
BATT : Battery MP-T : Multi-Plate Transfer
BJ : Bell Joint MT : Manual Transmission
CAN : Controller Area Network NA : Natural Aspiration
CD : Compact Disc OP : Option Parts
COMPL : Complete OBD : On-Board Diagnosis
CPU : Central Processing Unit P/S : Power Steering
DOHC : Double Overhead Camshaft P/W : Power Window
DTC : Diagnosis Trouble Code PCV : Positive Crankcase Ventilation
DOJ : Double Offset Joint PID : Parameter Identification
DVD : Digital Versatile Disc or Digital Video Disc RAM : Random Access Memory
EBD : Electronic Brake Distribution RH : RH (Right Hand)
EBJ : High-efficiency Compact Ball Fixed Joint ROM : Read Only Memory
EDJ : High-efficiency Compact Double Offset Joint rpm : Revolution Per Minute
ECM : Engine Control Module SOHC : Single Overhead Camshaft
EGI : Electronic Gasoline Injection SRS : Supplemental Restraint System
E/G : Engine SSM : Subaru Select Monitor
EGR : Exhaust Gas Recirculation ST : Special Tool
EX : Exhaust SW : Switch
ETC : Electronic Throttle Control TGV : Tumble Generator Valve
F/B : Fuse & Joint Box VDC : Vehicle Dynamics Control
FWD : Front Wheel Drive V.I.N. : Vehicle Identification Number
GPS : Global Positioning System VTD : Variable Torque Distribution

SPC-2
Impreza
SPECIFICATIONS
1. Impreza
A: DIMENSION
B: ENGINE
C: ELECTRICAL
Model 4 door 5 door OUTBACK
Overall length mm (in) 4,580 (180.3) 4,415 (173.8)
Overall width mm (in) 1,740 (68.5)
Overall height (at C.W.) mm (in) 1,475 (58.1) 1,480 (58.3)
Compartment
Length mm (in) 1,985 (78.1)
Width mm (in) 1,475 (58.1)
Height mm (in) Model without sunroof : 1,200 (47.2)
Model with sunroof : 1,170 (46.1)
Wheelbase mm (in) 2,620 (103.1)
Tr e a d
Front mm (in) 1,495 (58.9) 1,490 (58.7)
Rear mm (in)
Non-turbo model: 1,495 (58.9)
Turbo mode (205 tire) l: 1,500 (59.1)
Turbo mode (225 tire) l: 1,505 (59.3)
1,495 (58.9)
Minimum road clearance mm (in) 155 (6.1) 160 (6.3)
Model 2.5 L Turbo 2.5 L turbo
(WRX-SS model) 2.5 L
Engine type Horizontally opposed, liquid cooled, 4-cylinder, 4-stroke gasoline engine
Valve arrangement DOHC SOHC
Bore × stroke mm (in) 99.5 × 79.0 (3.92 × 3.11)
Displacement cm3(cu in) 2,457 (149.94)
Compression ratio 8.4 10.0
Ignition order 1 — 3 — 2 — 4
Idle speed at Park or
Neutral position
rpm 700 MT: 650
AT : 7 0 0
Maximum output kW (HP)/rpm 167 (224)/5,200 198 (265)/6,000 127 (170)/6,000
Maximum torque N·m (kgf-m, ft-lb)/rpm 307 (31.3, 226)/2,800 330 (33.7, 244)/4,000 230 (23.5, 170)/4,400
Model 2.5 L Turbo 2.5 L
Ignition timing (at idling) BTDC MT: 12°r10°
AT : 1 7 ° r10°
MT: 10°r8°
AT: 15°r10°
Spark plug Type and manufacturer NGK: SILFR6A NGK: FR5AP-11
Generator 12 V — 110 A 12 V — 90 A
Battery Type and capacity (5HR) AT: 12 V — 52 AH (65D23L)
MT: 12 V — 48 AH (55D23L)

SPC-3
Impreza
SPECIFICATIONS
D: TRANSMISSION
5MT: 5-forward speeds, 1-reverse
4AT: Electronically controlled fully-automatic, 4-forward speeds and 1-reverse
DSPD: Dry Single Plate Diaphragm
TCC: Torque Converter Clutch
E: STEERING
F: SUSPENSION
G: BRAKE
H: TIRE
Model 2.5 L Turbo 2.5 L
Transmission type 5MT 4AT 5MT 4AT
Clutch type DSPD TCC DSPD TCC
Gear ratio
1st 3.166 2.785 3.454 2.785
2nd 1.882 1.545 2.062 1.545
3rd 1.296 1.000 1.448 1.000
4th 0.972 0.694 1.088 0.694
5th 0.738 — 0.780 —
6th — — — —
Rev. 3.333 2.272 3.333 2.272
Reduction gear
(Front)
1st reduction Type of gear — Helical — Helical
Gear ratio — 1.000 — 1.000
Final reduction Type of gear Hypoid Hypoid Hypoid Hypoid
Gear ratio 3.900 3.900 3.900 4.111
Reduction gear
(Rear)
Transfer reduction Type of gear Helical — Helical —
Gear ratio 1.000 — 1.000 —
Final reduction Type of gear Hypoid Hypoid Hypoid Hypoid
Gear ratio 3.900 3.900 3.900 4.111
Model 2.5i, OUTBACK WRX, 2.5 GT WRX-SS
Ty p e Rack and pinion
Turns, lock to lock 2.8
Minimum turning
diameter m (ft) Curb to curb 10.6 (34.8) 10.8 (35.5)
Wall to wall 11.2 (36.7) 11.4 (37.4)
Front Macpherson strut type suspension
Rear Double-wishbone type suspension
Model 2.5 i OUTBACK, WRX, 2.5 GT, WRX-SS
Service brake system Dual circuit hydraulic with vacuum suspended power unit
Front Ventilated disc brake
Rear Drum brake
(OP: Disc brake) Disc brake
Parking brake Mechanical on rear brakes
Model 2.5 i OUTBACK, WRX, 2.5 GT WRX-SS
Rim size 16 × 61/2JJ 17 × 7JJ
Tire size P205/55R16 89V P205/50 R17 88V 225/45 R17 91W
Type Tubeless, Steel belted radial

SPC-4
Impreza
SPECIFICATIONS
I: CAPACITY
Model 2.5 L Turbo 2.5 L
5 M T 4 AT 5 M T 4 AT
Fuel tank 2(US gal, Imp gal) 64 (16.9, 14.1)
Engine oil
Capacity
(at overhaul) 2(US qt, Imp qt) 5.0 (5.3, 4.4)
When replacing
engine oil and
oil filter
2(US qt, Imp qt) 4.2 (4.4, 3.7)
When replacing
engine oil only 2(US qt, Imp qt) 4.0 (4.2, 3.5)
Transmission gear oil 2(US qt, Imp qt) 3.5 (3.7, 3.1) — 3.5 (3.7, 3.1) —
ATF 2(US qt, Imp qt) —
9.3 — 9.6
(9.8 — 10.1,
8.2 — 8.4)
—
9.3 — 9.6
(9.8 — 10.1,
8.2 — 8.4)
Front differential gear oil 2(US qt, Imp qt) —
1.1 — 1.3
(1.2 — 1.4,
1.0 — 1.1)
—
1.1 — 1.3
(1.2 — 1.4,
1.0 — 1.1)
Rear differential gear oil 2(US qt, Imp qt) 0.8 (0.8, 0.7)
Power steering fluid 2(US qt, Imp qt) 0.7 (0.7, 0.6)
Engine coolant 2(US qt, Imp qt) 7.5 (7.9, 6.6) 7.4 (7.8, 6.5) 6.8 (7.2, 6.0) 6.7 (7.1, 5.9)

SPC-5
Impreza
SPECIFICATIONS
J: WEIGHT
Model
4 door
SOHC
2.5 i
MT AT
OP code U4 U4 U4 U4 U4 C0 U4 U4 U4 U4
FW NF IZ IO VO NF FW NF IZ IO
Curb weight
(C.W.)
To t a l kg
(lb)
1,390
(3,064)
1,395
(3,075)
1,385
(3,053)
1,405
(3,097)
1,405
(3,097)
1,395
(3,075)
1,420
(3,130)
1,425
(3,141)
1,415
(3,119)
1,435
(3,163)
Front kg
(lb)
780
(1,719)
780
(1,719)
775
(1,708)
785
(1,730)
785
(1,730)
780
(1,719)
810
(1,785)
810
(1,785)
805
(1,774)
815
(1,796)
Rear kg
(lb)
610
(1,345)
615
(1,356)
610
(1,345)
620
(1,367)
620
(1,367)
615
(1,356)
610
(1,345)
615
(1,356)
610
(1,345)
620
(1,367)
Gross vehicle weight
(G.V.W.)
kg
(lb)
1,950
(4,299)
1,950
(4,299)
1,950
(4,299)
1,950
(4,299)
1,950
(4,299)
1,950
(4,299)
1,950
(4,299)
1,950
(4,299)
1,950
(4,299)
1,950
(4,299)
Gross axle
weight
(G.A.W.)
Front kg
(lb)
990
(2,183)
990
(2,183)
990
(2,183)
990
(2,183)
990
(2,183)
990
(2,183)
990
(2,183)
990
(2,183)
990
(2,183)
990
(2,183)
Rear kg
(lb)
1,000
(2,205)
1,000
(2,205)
1,000
(2,205)
1,000
(2,205)
1,000
(2,205)
1,000
(2,205)
1,000
(2,205)
1,000
(2,205)
1,000
(2,205)
1,000
(2,205)
Option
Aluminum wheel — — — — —
Cruise control
Leather package — — — — —
Genuine leather
seat — — — — — — — — — —
High grade audio — — — — — —
Navigation — — — — — — — — —
Satellite tuner — — — — — — — — —
Rear disc brake — —
Satellite SW — — — — —
Side airbag
Curtain airbag
VDC — —
Front fog light — — — — —
Cold weather
package — — — — — — — — — —
Sunroof — — — — — — —
Spare tire
(standard) — — — — — — — — — —