check engine SUBARU LEGACY 2004 4.G Service Manual

11 -1 9
2Maintenance and service
– CONTINUED –
1) Rubber gaskets
3. After refilling the reserve tank and the radiator, re-
install the caps and check that the rubber gaskets in-
side the radiator cap are in the proper position. T Changing the coolant
Change the engine coolant using the following proce-
dures according to the maintenance schedule in the
“Warranty and Maintenance Booklet”.
1. Remove the under cover. 1) Drain plug
2. Place a proper container under the drain plug and
loosen the drain plug.
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11 - 2 6
2Maintenance and service
Drive belts
The alternator, power steering pump, and air condi-
tioner compressor depend on drive belts. Satisfactory
performance requires that belt tension be correct. „
2.5 liter models
1) Power steering pump pulley
2) Air conditioner compressor pulley
3) Crank pulley in (mm)
To check belt tension, place a straightedge (ruler)
across two adjacent pulleys and apply a force of 22 lbs
(98 N, 10 kg) midway between the pulleys by using a
spring scale. Belt deflection should be the amount
specified. „ 3.0 liter models
It is unnecessary to check belt tension periodically be-
cause your engine is equipped with an automatic belt
tension adjuster. However, replacement of the belt
should be done according to the maintenance sched-
ule in the “Warranty and Maintenance Booklet”. Con-
sult your SUBARU dealer for replacement.
If a belt is loose, cracked, or worn, contact your SUBARU dealer.
2
3 A
B
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Deflection
New belt Used belt
A 0.28 – 0.35 (7.0 – 9.0) 0.35 – 0.43 (9.0 – 11.0)
B 0.30 – 0.33 (7.5 – 8.5) 0.35 – 0.40 (9.0 – 10.0)

11 - 2 8
2Maintenance and service
SAE viscosity No. and Applicable Temperature
Automatic transmission fluid „
Checking the fluid level
The automatic transmission fluid expands largely as
its temperature rises; the fluid level differs according to
fluid temperature. Therefore, there are two different
scales for checking the level of hot fluid and cold fluid
on the dipstick.
Though the fluid level can be checked without warm-
ing up the fluid on the “COLD” range, we recommend
checking the fluid level when the fluid is at operating
temperature. T Checking the fluid level when the fluid is hot
Check the fluid level monthly.
1. Drive the vehicle several miles to raise the temper-
ature of the transmission fluid up to normal operating
temperature; 158 to 176 °F (70 to 80 °C) is normal.
2. Park the vehicle on a level surface and set the park-
ing brake.
3. First shift the selector lever in each position. Then
shift it in the “P” position, and run the engine at idling
speed.-30 -20 -10 0 10 20 30 40
-20 0 60 20
80W
75W/90 80 100
40
85W 90
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11 -3 9
2Maintenance and service
– CONTINUED –
Brake booster
If the brake booster does not operate as described be-
low, have it checked by your SUBARU dealer.
1. With the engine off, depress the brake pedal sever-
al times, applying the same pedal force each time. The
distance the pedal travels should not vary.
2. With the brake pedal depressed, start the engine.
The pedal should move slightly down to the floor.
3. With the brake pedal depressed, stop the engine
and keep the pedal depressed for 30 seconds. The
pedal height should not change.
4. Start the engine again and run for about one minute
then turn it off. Depress the brake pedal several times
to check the brake booster. Brake booster operates
properly if the pedal stroke decreases with each de-pression.Brake pedal
Check the brake pedal free play and reserve distance
according to the maintenance schedule in the “War-
ranty and Maintenance Booklet”. „Checking the brake pedal free play
1) 0.04 – 0.12 in (1.0 – 3.0 mm)
Stop the engine and firmly depress the brake pedal
several times. Lightly press the brake pedal down with
one finger to check the free play with a force of less
than 2 lbs (10 N, 1 kg).
If the free play is not within proper specification, con-
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11 - 4 0
2Maintenance and service
tact your SUBARU dealer. „
Checking the brake pedal reserve dis-
tance
1) More than 2.56 in (65 mm)
Depress the pedal with a force of approximately 66 lbs
(294 N, 30 kg) and measure the distance between the
upper surface of the pedal pad and the floor.
When the measurement is smaller than the specifica-
tion, or when the pedal does not operate smoothly,
contact with your SUBARU dealer. Clutch pedal (Manual transmission
vehicles)
Check the clutch pedal free play and reserve distance
according to the maintenance schedule in the “War-
ranty and Maintenance Booklet”. „
Checking the clutch function
Check the clutch engagement and disengagement.
1. With the engine idling, check that there are no ab-
normal 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 transmission smoothly cou-
ple without any sign of slippage.
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11 -5 1
2Maintenance and service
– CONTINUED –
Aluminum wheels (if equipped)
Aluminum wheels can be scratched and damaged
easily. Handle them carefully to maintain their appear-
ance, performance, and safety. yWhen any of the wheels is removed and replaced
for tire rotation or to change a flat, always check the
tightness of the wheel nuts after driving approximatly
600 miles (1,000 km). If any nut is loose, tighten it to
the specified torque.y Never apply oil to the threaded parts, wheel nuts, or
tapered surface of the wheel.y Never let the wheel rub against sharp protrusions or
curbs. y Be sure to fit tire chains on uniformly and completely
around the tire, otherwise the chains may scratch the
wheel.y When wheel nuts, balance weights, or the center
cap is replaced, be sure to replace them with genuine
SUBARU parts designed for aluminum wheels.Windshield washer fluid
Never use engine coolant as washer fluid be-
cause it could cause paint damage.
Check the level of the washer fluid at each fuel stop. If
the level is low, fill the fluid up to the neck of the reser- voir.
Use windshield washer fluid. If windshield washer fluid
is unavailable use clean water.
In areas where water freezes in winter, use an anti-
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14-3
Index
Center
Console ..................................................................... 6-6
Ventilators ................................................................. 4-2
Changing
Flat tire ....................................................................... 9-5
Oil and oil filter ........................................................ 11-12
Charge warning light .................................................. 3-12
CHECK ENGINE warning light/ Malfunction indicator lamp ..................................3-11
Checking
Brake pedal free play ........................................... 11-39
Brake pedal reserve distance ...........................11-40
Clutch function ........................................................ 11-40
Clutch pedal free play .......................................... 11-41
Engine oil level ....................................................... 11-11
Fluid level ....................... 11-28, 11-35, 11-36, 11-38
Gear oil level ................................ 11-27, 11-30, 11-32
Child restraint systems ............................................... 1-37
Installation with seatbelt .....................................1-41
Lower and tether anchorages ..........................1-48
Child safety .................................................................... 5
Locks .......................................................................... 2-22
Chime
Key .............................................................................. 3-5
Seatbelt ........................................................... 1-20, 3-10
Cigarette lighter socket ............................................. 6-10Cleaning
Aluminum wheels .................................................. 10-4
I n te rior .. ... .. ... .. ... ... .. ... ... .. ... .. ... ... .. ... ... .. ... .. ... ... .. ... ... .. .. 10 -7
Ventilator grille ........................................................ 4-19
Climate control system Manual ....................................................................... 4-5
Automatic ................................................................. 4-11
Clock ................................................................................. 3-18
Clutch fluid ...................................................................... 11-38
Clutch pedal ................................................................... 11-40
Coat hook ....................................................................... 6-20
Coin compartment ....................................................... 6-7
Convenience hook ...................................................... 6-20
Convenient tie-down hooks .....................................6-24
Cooling system ............................................................. 11-17
Corrosion protection ......................................... 8-13, 10-5
Cruise control ................................................................ 7-42
Set indicator light ................................................... 3-18
Cup holder ...................................................................... 6-8
D
Daytime running light system .................................3-21
Differential gear oil Front ............................................................................ 11-30
Rear ............................................................................ 11-32
Dimensions .................................................................... 12-2
Disarming the system ................................................ 2-17

14-9
Index
Vehicle Dynamics Control (VDC) system
..........7-34
Ventilator ......................................................................... 4-2
W
Warning and indicator lights ....................................3-10
Warning lights
ABS ............................................................................. 3-13
Anti-lock Brake system .......................................3-13
AT OIL TEMPerature ........................................... 3-12
Brake system .......................................................... 3-14
Charge ....................................................................... 3-12
CHECK ENGINE ................................................... 3-11
Door open ................................................................. 3-15
Front-wheel drive ................................................... 3-15
Oil pressure .............................................................. 3-12
S ea tb elt .. ... .. ... ... .. ... .. ... ... .. ... .. ... ... .. ... ... .. ... .. ... .. 1-2 0, 3-10
SRS airbag system ............................................... 3-10
Warranties and maintenance .................................8-28
Washing ........................................................................... 10-2
Waxing and polishing ................................................. 10-3
Wear indicators ............................................................ 11-47
Wheel
Alignment .................................................................. 12-5
Balance ...................................................................... 11-47
Covers ........................................................................ 11-50
Replacement ........................................................... 11-49
Windows .......................................................................... 2-23Windshield
Washer fluid ............................................................. 11-51
Wiper and washer switches ..............................3-26
Wiper deicer ............................................................ 3-30
Winter driving ................................................................ 8-11
Wiper and washer ....................................................... 3-24