Equus 3130 - Scan Tool – OBD2 Manual do Utilizador descarregar pdf (Página 3)

Introduction

WHAT IS OBD?

OBD2 1

WHAT IS OBD?

The OBD2 Scan Tool is designed to work on all OBD 2 compliant

vehicles. All 1996 and newer vehicles (cars, light trucks and

SUVs) sold in the United States are OBD 2 compliant.

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. OBD 1 was designed to monitor manu-

facturer-specific systems on vehicles built

from 1981 to 1995.Then came the develop-

ment of OBD 2, which is on all

1996 cars and light trucks sold in the

U.S.Like its predecessor, OBD 2 was adopted as part of a government

mandate to lower vehicle emissions. But what makes OBD 2 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 OBD 2 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 OBD2 Scan Tool, is

required to retrieve these codes, which consumers and professionals

use as a starting point for repairs.

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Equus 3130 - Scan Tool – OBD2 Manual do Utilizador Página 3