Roadi RDT55 - Manual (Page 4)

OWNER S MANUAL
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OBD2 CODE SCANNER
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1. Introduction
1.1 What Is OBD?
Definition: Onboard Diagnostics II - A second-generation
emissions diagnostic system required on all 1996 and newer
vehicles (though some 1994 and 1995 model year vehicles were
equipped with early versions of the system).
This OBD2/EOBD/CAN Code scanner is designed to work on all OBD2
compliant vehicles (include all 1996 and newer cars, lig ht trucks and SUVs
sold in the World). OBD2 was adopted as part of a government mandate to
lower vehicle emissions. This sophisticated program in the vehicle's main
computer system is designed to detect failures in a range of systems, and
can be accessed throug h vehicle's 16-pin Data Link Connector (DLC) which
is usually located under the dashboard. For OBD systems, if a problem is
found, the vehicle's 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 this OBD2 Code
Reader, is required to retrieve these codes throug h vehicle's Data Link
Connector (DLC), which consumers and professionals use as a starting point
for repairs.
1.2 Safety Precautions and Warnings
To prevent personal injury or damage to vehicles and/or the scan
tool, read this instruction manual first and observe the following
safety precautions at a minimum whenever working on a vehicle:
CHECK