Introduction What Is Obd - Innova 3040c Owner's Manual

WHAT IS OBD?
The Scan Tool is designed to work on all OBD2 compliant vehicles.
All 1996 and newer vehicles (cars, light trucks and SUVs) sold in
One of the most exciting improvements in the
automobile industry was the addition of on-
board diagnostics (OBD) on vehicles, or in more
basic terms, the computer that activates the
vehicle's "CHECK ENGINE" light. OBD1 was
designed to
systems on vehicles built from 1981 to 1995.
Then came the development of OBD2, which is
on all 1996 and newer vehicles sold in the U.S. Like its predecessor,
OBD2 was adopted as part of a government mandate to lower vehicle
emissions. But what makes OBD2 unique is its universal application for
all late model cars and trucks - domestic and import. This sophisticated
program in the vehicle's main computer system is designed to detect
failures in a range of systems, and can be accessed through a universal
OBD2 port, which is usually found under the dashboard. For all OBD
systems, if a problem is found, the computer turns on the "CHECK
ENGINE" light to warn the driver, and sets a Diagnostic Trouble Code
(DTC) to identify where the problem occurred. A special diagnostic tool,
such as the Scan Tool, is required to retrieve these codes, which
consumers and professionals use as a starting point for repairs.
The Scan Tool provides the additional ability to retrieve enhanced DTCs
from most Chrysler/Jeep, Ford/Mazda, GM/Isuzu, Honda/Acura and
Toyota/Lexus vehicles, as well as Anti-Lock Brake System (ABS) DTCs
and vehicle information. The types of enhanced data available depends
on the vehicle make.
To learn more about vehicle Computer Control Systems and
OBD2, see COMPUTER ENGINE CONTROLS on page 8.
3040c
the United States are OBD2 compliant.
monitor manufacturer-specific
Introduction
WHAT IS OBD?
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