USER’S MANUAL
OBDII Auto Scanner
3
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:
1. Always perform automotive testing in a safe environment.
2. Wear safety eye protection that meets ANSI standards.
3. Keep clothing, hair, hands, tools, test equipment, etc. away from all
moving or hot engine parts.
4. Operate the vehicle in a well ventilated work area: Exhaust
gases are poisonous.
5. Put blocks in front of the drive wheels and never leave the
vehicle unattended while running tests.
6. Use extreme caution when working around the ignition coil,
distributor cap, ignition wires and spark plugs. These components
create hazardous voltages when the engine is running.
7. Put the transmission in PARK (for automatic transmission) or
NEUTRAL (for manual transmission) and make sure the parking
brake is engaged.
8. Keep a fire extinguisher suitable for gasoline/chemical/electrical
fires nearby.
9. Don't connect or disconnect any test equipment while the ignition
is on or the engine is running.
10. 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
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