engine SUBARU IMPREZA 2006 2.G Owners Manual

11-28 Maintenance and service
Clutch pedal (MT vehicles)
Check the clutch pedal free play and re-
serve distance according to the mainte-
nance schedule in the “Warranty and
Maintenance Booklet ”.
Checking the clutch function
Check the clutch engagement and disen-
gagement.
1. With the engine idling, check that there
are no abnormal noises when the clutch
pedal is depressed, and that shifting into
1st or reverse feels smooth.
2. Start the vehicle by releasing the pedal
slowly to check that the engine and trans-
mission smoothly couple without any sign
of slippage.
Checking the clutch pedal
free play
1) 0.16 – 0.51 in (4.0 –13.0 mm)
Lightly press the clutch pedal down with
your finger until you feel resistance, and
check the free play.
If the free play is not within proper specifi-
cation, contact your SUBARU dealer.
Replacement of brake pad
and lining
The right front disc brake and the right rear
disc brake have audible wear indicators
on the brake pads. If the brake pads wear
close to their service limit, the wear indica-
tor makes a very audible scraping noise
when the brake pedal is applied.
If you hear this scraping noise each time
you apply the brake pedal, have the brake
pads serviced by your SUBARU dealer as
soon as possible.
1
B00377
700040

11-36 Maintenance and service
Windshield washer fluid
If you spray washer fluid on the windshield
but the supply of washer fluid appears to
diminish, check the level of washer fluid in
the tank.
Washer fluid level gauge
Remove the washer tank filler cap, then
check the fluid level indicated by the level
gauge (attached to the inside of the cap).
If the level is near the “Low ” mark, add flu- id until it reaches the
“Hi ” level on the level
gauge or the “Full ” mark on the tank.
Use windshield washer fluid. If windshield
washer fluid is unavailable use clean wa-
ter.
In areas where water freezes in winter,
use an anti-freeze type windshield washer
fluid. SUBARU Windshield Washer Fluid
contains 58.5% methyl alcohol and 41.5%
surfactant, by volume. Its freezing temper-
ature varies according to how much it is di-
luted, as indicated in the following table.
In order to prevent freezing of washer flu-
id, check the freezing temperatures in the
table above when adjusting the fluid con-
centration to the outside temperature.
If you fill the reservoir tank with a fluid with
a different concentration from the one
300523
Hi
Low
300172
300173
Washer Fluid Con- centration Freezing Tempera-
ture
30% 10.4 F ( –12 C)
50% –4F ( –20 C)
100% –49 F ( –45 C)
Never use engine coolant as washer
fluid because it could cause paint
damage.

11-42 Maintenance and service
To remove the coin tray, open the cover
and pull the coin tray out.
The other one is housed in the engine
compartment.1) Fuse puller
2) Spare fuse
The spare fuses are stored in the main
fuse box cover in the engine compart-
ment. The fuse puller is stored in the main fuse
box in the engine compartment.1) Good
2) Blown
If any lights, accessories or other electri-
cal controls do not operate, inspect the
corresponding fuse. If a fuse has blown,
replace it.
1. Turn the ignition switch to the
“LOCK ”
position and turn off all electrical accesso-
ries.
2. Remove the cover.
3. Determine which fuse may be blown.
The back side of each fuse box cover and
the “Fuses and circuits ” section in chapter
12 in this manual show the circuit for each
fuse.
B00173
B00463
B00476
B00477
1 2
B00338

12
Specifications
Specifications ..................................................... 12-2
Dimensions ........................................ ..................... 12-2
Engine ............................................ .......................... 12-3
Electrical system ................................. ................... 12-3
Capacities ........................................ ........................ 12-4
Tires ............................................. ............................ 12-4
Wheel alignment ................................... .................. 12-5
Fuses and circuits ................................ .............. 12-6
Fuse panel located behind the coin tray .......... ... 12-6
Fuse panel located in the engine compartment ....................................... .................. 12-8
Bulb chart ........................................ .................... 12-9
Vehicle identification ............................ ............. 12-10

Specifications 12-3
– CONTINUED –
Engine
Electrical system
AT: Automatic transmission
MT: Manual transmission
Engine modelEJ253
(2.5-liter, SOHC, non-turbo)EJ255
(2.5-liter, DOHC, turbo, WRX)EJ257
(2.5-liter, DOHC, turbo, WRX-STI)
Engine typeHorizontally opposed, liquid cooled 4 cylinder, 4-s troke gasoline engine
Displacement cc (cu-in)2,457 (150)
Bore Stroke in (mm)3.9  3.1 (99.5  79.0)
Compression ratio10.0 : 18.4 : 18.2 : 1
Firing order1 – 3 – 2 – 4
Battery type and capacity (5HR)MT12V-48AH (55D23L)
AT12V-52AH (75D23L)
AlternatorWRX12V-110A
Except WRX12V-90A
Spark plugsNon-turbo engineFR5AP-11 (NGK)
Turbo engineILFR6B (NGK)

12-4 Specifications
Capacities
AT: Automatic transmission
MT: Manual transmission
Tires
Fuel tank15.9 US gal (60 liters, 13.2 Imp gal)
Engine oil4.2 US qt (4.0 liters, 3.5 Imp qt)
Transmission oil (MT)5-speed3.7 US qt (3.5 liters, 3.1 Imp qt)
6-speed4.3 US qt (4.1 liters, 3.6 Imp qt)
AT differential gear oil1.3 US qt (1.2 liters, 1.1 Imp qt)
Rear differential gear oilWRX-STI1.1 US qt (1.0 liters, 0.9 Imp qt)
Others0.8 US qt (0.8 liters, 0.7 Imp qt)
Transmission oil (AT)10.0 US qt (9.5 liters, 8.4 Imp qt)
Power steering fluid0.7 US qt (0.7 liter, 0.6 Imp qt)
Engine coolantNon-turbo engineMT7.4 US qt (7.0 liters, 6.2 Imp qt)
AT7.3 US qt (6.9 liters, 6.1 Imp qt)
Turbo engineMT8.1 US qt (7.7 liters, 6.8 Imp qt)
Item2.5i, OUTBACK SPORTWRXWRX-STI
Tire sizeP205/55R16 89V215/45R17 91W225/45R17 90W
Wheel size16  6 1
/2 JJ17
 7 JJ17  8 JJ
PressureFront33 psi (230 kPa, 2.3 kgf/cm 2
)33 psi (230 kPa, 2.3 kgf/cm 2
)36 psi (250 kPa, 2.5 kgf/cm 2
)
Rear30 psi (210 kPa, 2.1 kgf/cm 2
)32 psi (220 kPa, 2.2 kgf/cm 2
)30 psi (210 kPa, 2.1 kgf/cm 2
)
Temporary spare tireSizeT135/70 D16T135/70 D17
Pressure60 psi (420 kPa, 4.2 kgf/cm 2
)

12-6 Specifications
Fuses and circuits
Fuse panel located behind the coin tray
1 2 3 4 5 6
7 8 9 10 11 12
14
13 15 16 17 18 19
20 21 22 23
C00000
Fuse panelFuse ratingCircuit
115AHeater fan
215AHeater fan
315APower door lock
Remote keyless entry
420ACigarette lighter
Remote controlled rear view mirrors
510ATail light
Parking light
615ASRS airbag
715AFog light
820AABS solenoid
915ARadio
10Empty
1115AEngine ignition system
SRS airbag
AT control system
1210AIllumination brightness control
1310ACombination meter
SRS lamp
1410ARear window wiper and washer

12-8 Specifications
Fuse panel located in the engine compartment
A) FWD socket (AT models except Turbo)
B) Main fuse
C) Engine sensor (Non-turbo models)
1 3
A
B
9
6
5
7
C
312
4 8
1 0 11 1 2
C00107
Fuse panelFuse ratingCircuit
120ARadiator cooling fan (Main)
220ARadiator cooling fan (Sub)
330AABS motor
420ARear window defogger
515AHazard warning flasher
Horn
615ATurn signal lights
710AAutomatic transmission control unit
810AAlternator
915AHeadlight (right side)
1015AHeadlight (left side)
1120ALighting switch
1220AClock
Interior light
1310ASecondary air combination valve
(Turbo models only)

Index 14-3
Oil and oil filter ................................ ............................. 11-8
Charge warning light .............................. .......................... 3-16
CHECK ENGINE warning light/Malfunction indicator lamp .............................................. ................................ 3-16
Checking Brake pedal free play ............................... .................. 11-27
Brake pedal reserve distance ........................... ......... 11-27
Clutch function ..................................... ...................... 11-28
Clutch pedal free play .............................. .................. 11-28
Engine oil level ................................... ......................... 11-8
Fluid level ................................. 11-20 , 11-24, 11-25, 11-26
Gear oil level ..................................... ... 11-18, 11-21, 11-22
Child restraint systems ............................... ...................... 1-23
Installation with A/ELR seatbelt ................... ................ 1-26
Lower and tether anchorages ........................ .............. 1-30
Child safety ........................................ .................................... 5
Locks ................................................ ........................... 2-18
Chime Key ................................................ ................................ 3-5
Seatbelt .......................................... .................... 1-11, 3-14
Cigarette lighter socket ............................ ........................... 6-6
Cleaning Aluminum wheels .................................... .................... 10-3
Interior .......................................... ............................... 10-5
Ventilator grille ................................. ............................ 4-11
Climate control system Automatic ......................................... .............................. 4-7
Manual ............................................ ............................... 4-3
Clock ............................................... ................................. 3-22
Clutch fluid ....................................... ............................... 11-26
Clutch pedal ....................................... ............................ 11-28
Coat hook .......................................... ................................. 6-9Coin tray ..........................................
................................... 6-4
Cooling system ....................................... ........................ 11-12
Corrosion protection ................................ ................ 8-10, 10-4
Cruise control ...................................... .............................. 7-27
Indicator light .................................... ............................ 3-20
Set indicator light ................................ ......................... 3-20
Cup holder ........................................ .................................. 6-5
D
Daytime running light system ......................... ................... 3-23
Differential gear oil Front ............................................. .............................. 11-21
Rear .............................................. ............................. 11-22
Dimensions .......................................... ............................. 12-2
Disarming the system ................................. ...................... 2-15
Disc brake pad wear warning indicators ................ ........... 7-22
Dome light ........................................ ........................ 6-2, 11-50
Door locks ......................................... .................................. 2-4
Door open warning light ........................... ......................... 3-19
Drive belts ........................................ ............................... 11-18
Driver ’s control center differential ....................... .............. 7-12
Drivers control center differential Auto indicator light ............................... ........................ 3-20
Indicator lights .................................... .......................... 3-21
Driving Car phone/cell phone ............................... ......................... 7
Drinking ........................................... .................................. 6
Drugs .............................................. .................................. 7
Foreign countries ................................... ........................ 8-4
Pets ............................................... .................................... 7
Snowy and icy roads ................................... ................... 8-9
Tips ............................................... .............. 7-10, 7-12, 8-5

14-4 Index
Tired or sleepy .................................... ............................... 7
E
EBD (Electronic brake force distribution) system ........ ..... 7-24
Electrical system ..................................... ......................... 12-3
Electronic Brake Force Distribution (EBD) system ......... .. 7-24
Emergency Locking Retractor (ELR) .................... ............ 1-11
Engine Compartment overview ................................ ................ 11-6
Coolant ........................................... ........................... 11-12
Exhaust gas (Carbon monoxide) ....................... ........ 6, 8-2
Hood .............................................. .............................. 11-4
Oil ............................................... ................................. 11-8
Overheating ........................................ ......................... 9-11
Starting .......................................... ................................ 7-7
Stopping .......................................... .............................. 7-8
Exterior care ....................................... .............................. 10-2
F
Flat tires ......................................... .................................... 9-4
Floor mat ......................................... ................................... 6-9
Fluid level
Automatic transmission ............................... .............. 11-20
Brake .............................................. ........................... 11-25
Clutch ............................................. ........................... 11-26
Power steering ..................................... ...................... 11-24
Folding down the rear seat ......................... ........................ 1-8
Front
Differential gear oil ............................. ........................ 11-21
Fog light ......................................... ............................ 11-48
Fog light button .................................. .......................... 3-26Seatbelt pretensioners ..............................
................... 1-20
Seats .............................................. ................................ 1-2
Turn signal light .................................. ....................... 11-48
Fuel .............................................. ....................................... 7-2
Economy hints ........................................ ....................... 8-2
Filler lid and cap ................................. ............................ 7-4
Gauge ............................................. ...................... 3-8, 3-12
Requirements ...................................... .......................... 7-2
Fuses .............................................. ................................ 11-41
Fuses and circuits ..................................... ........................ 12-6
G
GAWR (Gross Axle Weight Rating) ..................... ............. 8-14
Glove box ........................................... ................................ 6-4
GVWR (Gross Vehicle Weight Rating) ................... .......... 8-14
H
Hazard warning flasher ............................. .......................... 3-6
Head restraint adjustment (Front) ................... .................... 1-4
Head restraint adjustment (Wagon) .................. .................. 1-7
Headlight beam leveler ............................ ......................... 3-25
Headlight flasher .................................. ............................. 3-23
Headlight indicator light .......................... .......................... 3-21
Headlights ......................................... ..................... 3-22, 11-45
Heater operation .................................. ............................... 4-5
High beam indicator light .......................... ........................ 3-20
High mount stop light .............................. ........................ 11-51
Horn .............................................. .................................... 3-35
Hose and connections .................................. .................. 11-12