Subaru 2003 Impreza - Manual (Page 228)

IMPREZA(NA) A1850BE-A (ENGLISH)
7
Starting and operating
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and states using two-wheel dynamometers in their
emission testing programs have EXEMPTED
Subaru AWD vehicles from the portion of the testing
program 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.
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 accident or injuries to persons
nearby.
CAUTION
Resultant vehicle damage due to improper
testing is not covered under the SUBARU Lim-
ited Warranty and is the responsibility of the
state inspection program or its contractors or
licensees.
The EPA has issued regulations for inspecting the
On-Board Diagnostic (OBD) system as part of the
state emissions inspection. The OBD system is de-
signed to detect engine and transmission problems
that might cause vehicle emissions to exceed allow-
able limits. These inspections apply to all 1996 mod-
el 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 inspec-
tion 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 electron-
ic scan tool while the engine is running.
D A vehicle passes the OBD system inspection if
proper the “CHECK ENGINE” warning light/MIL illu-