1. 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:
Always perform automotive testing in a safe environment
Do not attempt to operate or observe the tool while driving a vehicle.Operating or
observing the tool will cause driver distraction and could cause a fatal accident.
Wear safety eye protection that meets ANSI standards.
Operate the vehicle in a well ventilated work area: Exhaust gases are
Poisonous.
Put the transmission in PARK (for automatic transmission) or NEUTRAL (for
manual transmission) and make sure the parking brake is engaged.
Keep the scan tool dry, clean, free from oil/water or grease. Use a mild detergent
on a clean cloth to clean the outside of the scan tool, when Necessary.
2. General Information
2.1 On-Board Diagnostics (OBD) II
The first generation of On-Board Diagnostics (called OBD I) was developed by
the California Air Resources Board (CARB) and implemented in 1988 to monitor
some of the emission control components on vehicles. As technology evolved
and the desire to improve the On-Board Diagnostic system increased, a new
generation of On-Board Diagnostic system was developed. This second
generation of On-Board Diagnostic regulations is called "OBD II".
The OBD II system is designed to monitor emission control systems and key
engine components by performing either continuous or periodic tests of specific
components and vehicle conditions.When a problem is detected, the OBD II
system turns on a warning lamp (MIL) on the vehicle instrument panel to alert
the driver typically by the phrase “Check Engine” or “Service Engine Soon”. The
system will also store important information about the detected malfunction so
that a technician can accurately find and fix the problem. Here below follow three
pieces of such valuable Information:
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