3
Safety Precautions
General Safety Guidelines to Follow When Working on Vehicles
To prevent accidents that could result in serious injury and/or damage
to your vehicle or test equipment, carefully follow these safety rules
and test procedures at all times when working on vehicles:
Always wear approved eye protection.
Always operate the vehicle in a well-ventilated area. Do not inhale exhaust gases
they are very poisonous!
Always keep yourself, tools and test equipment away from all moving or hot engine
parts.
Always make sure the vehicle is in Park (Automatic transmission) or Neutral
(manual transmission) and that the parking brake is firmly set. Block the drive
wheels.
Never lay tools on vehicle battery. You may short the terminals together causing
harm to yourself, the tools or the battery.
Never use OBD II System Tester if its internal circuitry has been exposed to any
liquids.
Never smoke or have open flames near vehicle. Vapors from gasoline and
charging battery are highly flammable and explosive.
Never leave vehicle unattended while running tests.
Always keep a fire extinguisher suitable for gasoline/electrical/chemical fires handy.
Always use extreme caution when working around the ignition coil, distributor cap,
ignition wires, and spark plugs. These components contain High Voltage when the
engine is running.
When performing a road test, Never operate the OBD II System Tester alone while
driving the vehicle. Always have one person drive the vehicle while an assistant
operates the tester.
Always turn ignition key OFF when connecting or disconnecting electrical compo-
nents, unless otherwise instructed.
Always follow vehicle manufacturers warnings, cautions and service procedures.
WARNING!
Some vehicles are equipped with safety air bags. You must follow
vehicle service manual cautions when working around the air bag
components or wiring. If the cautions are not followed, the air bag
may open up unexpectedly, resulting in personal injury. Note that the
air bag can still open up several minutes after the ignition key is off
(or even if the vehicle battery is disconnected) because of a special
energy reserve module.