Owner maintenance, Maintaining your car, Emission inspection readiness – Volvo 2009 C70 User Manual

Page 206: What is an onboard diagnostic system (obd ii), How do states use obd ii for emission inspections, How can my vehicle fail obd ii emission inspection, 09 maintenance and servicing

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09 Maintenance and servicing

Maintaining your car

09

206

Owner maintenance

Periodic maintenance requirements and inter-
vals are described in your vehicle's Warranty
and Service Records Information booklet.
The following points can be carried out
between the normally scheduled maintenance
services.

Each time the car is refueled:

Check the engine oil level.

Clean the windshield, windshield wipers,

headlights, and taillights.

Monthly:

Check cold tire pressure in all tires. Inspect

the tires for wear.

Check that engine coolant and other fluid

levels are between the indicated "min" and

"max" markings.

Clean interior glass surfaces with a glass

cleaner and soft paper towels.

Wipe driver information displays with a soft

cloth.

Visually inspect battery terminals for cor-

rosion. Corrosion may indicate a loose ter-

minal connector, or a battery near the end

of its useful service life. Consult a trained

and qualified Volvo service technician for

additional information.

As needed:

Wash the car, including the undercarriage,

to reduce wear that can be caused by a

buildup of dirt, and corrosion that can be

caused by salt residues.

Clean leaves and twigs from air intake

vents at the base of the windshield, and

from other places where they may collect.

NOTE

Complete service information for qualified

technicians is available online for purchase

or subscription at www.volvotechinfo.com.

Emission inspection readiness

What is an Onboard Diagnostic System
(OBD II)?

OBD II is part of your vehicle's computerized
engine management system. It stores diagnos-
tic information about your vehicle's emission
controls. It can light the Check Engine light
(MIL) if it detects an emission control "fault." A
"fault" is a component or system that is not
performing within an expected range. A fault
may be permanent or temporary. OBD II will
store a message about any fault.

How Do States Use OBD II for Emission
Inspections?

Many states connect a computer directly to a
vehicle's OBD II system. The inspector can
then read "faults." In some states, this type of
inspection has replaced the tailpipe emission
test.

How Can My Vehicle Fail OBD II Emission
Inspection?

Your vehicle can fail OBD II emission inspec-
tion for any of the following reasons.

If your Check Engine (MIL) light is lit, your

vehicle may fail inspection.

If your vehicle's Check Engine light was lit,

but went out without any action on your

part, OBD II will still have a recorded fault.

Your vehicle may pass or fail, depending

on the inspection practices in your area.

If you had recent service that required dis-

connecting the battery, OBD II diagnostic

information may be incomplete and "not

ready" for inspection. A vehicle that is not

ready may fail inspection.

How Can I Prepare for My Next OBD II
Emission Inspection?

If your Check Engine (MIL) light is lit – or

was lit but went out without service, have

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