Subaru 2009 Tribeca User Manual download pdf (Page 242)

7-6 Starting and operating

in order to meet their obligation under

federal law to implement stricter vehicle

emission standards to reduce air pollution

from vehicles. A dynamometer is a tread-

mill or roller-like testing device that allows

your vehicle’s wheels to turn while the

vehicle 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. Normally, a portion of the

basic emission test consists of an emis-

sion 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

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 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.

The EPA has issued regulations for

inspecting the On-Board Diagnostic

(OBD) system as part of the state emis-

sions inspection. The OBD system is

designed to detect engine and transmis-

sion problems that might cause vehicle

emissions to exceed allo wable limits.

These inspections apply to all 1996 model

year and newer passenger cars and light

trucks. Over 30 states plus the District of

Columbia have implemented the OBD

system inspection.

. 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.

. Avehicle

passes the OBD system

inspec tion if proper the “CHECK EN-

GINE” warning light/MIL illumination is

observed, there is no stored diagnostic

trouble codes, and the OBD sy stem

readiness monitors are complete.

. 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.

. A state emission inspection may reject

(not pass or fail) a vehicle if the number of

OBD system readiness monitors “Not

Ready” is greater than one. 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.

. Owners of rejected or failing vehicles

should contact their SUBARU Dealer for

service.

1 2 ... 237 238 239 240 241 242 243 244 245 246 247 ... 410 411

Comments to this Manuals

No comments