2000-2004 Subaru Outback SUV Starting and operating -> State emission testing (U.S. only) User Manual
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Starting and operating -> State emission testing (U.S. only) for Your Subaru Outback SUV Second Generation (2000-2004)

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D If the fuel filler cap is not tightened until it clicks or if the tether
is caught under the cap, the CHECK ENGINE warning light may
come on. Refer to the “Warning and indicator lights” section lo-
cated in chapter 3.
State emission testing (U.S. only)
WARNING
Testing of an All-Wheel Drive vehicle must NEVER be performed
on a single two-wheel dynamometer. Attempting to do so will
result in uncontrolled vehicle movement and may cause an acci-
dent or injuries to persons nearby.
CAUTION
Resultant vehicle damage due to improper testing is not covered
under the SUBARU Limited Warranty and is the responsibility of
the state inspection program or its contractors or licensees.
At state inspection time, remember to tell your inspection or service
station in advance not to place your Subaru AWD vehicle on a two-
wheel dynamometer. Otherwise, serious transmission damage will
result.
Some states have started using dynamometers in their state inspection
programs in order to meet their obligation under federal law to implement
stricter vehicle emission standards to reduce air pollution from cars. A
dynamometer is a treadmill or roller-like testing device that allows your
car’s wheels to turn while the car remains in one place. Depending on
the severity of a state’s air pollution problems, the states must adopt
either a “basic” or “enhanced” vehicle emission inspection test. Nor-
mally, a portion of the basic emission test consists of an emission
inspector inserting an analyzer probe into the exhaust pipe of an idling
vehicle for a short period of time. States with more severe air pollution
problems are required to adopt an enhanced vehicle emission test. This
test simulates actual driving conditions on a dynamometer and permits
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more accurate measurement of tailpipe emitted pollution than the basic
emission test.
The U.S. Environmental Protection Agency (EPA) and states using two-
wheel dynamometers in their emission testing programs have
EXEMPTED Subaru AWD vehicles from the portion of the testing pro-
gram that involves a two-wheel dynamometer.
There are some states that use four-wheel dynamometers in their testing
programs. When properly used, that equipment will not damage an AWD
Subaru vehicle.
Under no circumstances should the rear wheels be jacked off the
ground, nor should the driveshaft be disconnected for state emission
testing.
The EPA has issued regulations for inspecting the On-Board Diagnostic
(OBD) system as part of the state emissions inspection. The OBD sys-
tem is designed to detect engine and transmission problems that might
cause vehicle emissions to exceed allowable limits. These inspections
apply to all 1996 model year and newer passenger cars and light trucks.
Several states plus the District of Columbia have opted to start the OBD
system inspection prior to the required EPA regulation effective date of
January 1, 2002. Other states will add OBD system inspection in 2002.
D The inspection of the OBD system consists of a visual operational
check of the “CHECK ENGINE” warning light/malfunction indicator lamp
(MIL) and an examination of the OBD system with an electronic scan tool
while the engine is running.
D A vehicle passes
the OBD system inspection if proper the “CHECK
ENGINE” warning light/MIL illumination is observed, there is no stored
diagnostic trouble codes, and the OBD system readiness monitors are
complete.
D A vehicle fails
the OBD inspection if the “CHECK ENGINE” warning
light/MIL is not properly operating or there is one or more diagnostic
trouble codes stored in vehicle’s computer with the “CHECK ENGINE”
warning light/MIL illuminated.
D A state emission inspection may reject (not pass or fail) a vehicle if
the number of OBD system readiness monitors “Not Ready” is greater
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than three. Under this condition, the vehicle operator should be
instructed to drive his/her vehicle for a few days to set the monitors and
return for an emission re-inspection.
D Owners of rejected or failing vehicles should contact their Subaru
Dealer for service.
Preparing to drive
You should perform the following checks and adjustments every day be-
fore you start driving.
1. Check that all windows, mirrors, and lights are clean and unob-
structed.
2. Check the appearance and condition of the tires. Also check tires for
proper inflation.
3. Look under the vehicle for any sign of leaks.
4. Check that the hood, trunk and rear gate are fully closed.
5. Check the adjustment of the seat.
6. Check the adjustment of the inside and outside mirrors.
7. Fasten your seatbelt. Check that your passengers have fastened their
seatbelts.
8. Check the operation of the warning and indicator lights when the igni-
tion switch is turned to the “ON” position.
9. Check the gauges, indicator and warning lights after starting the en-
gine.
NOTE
Engine oil, engine coolant, brake fluid, washer fluid and other fluid
levels should be checked daily, weekly or at fuel stops.

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