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General Safety Guidelines to Follow 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 smoke or have open flames near vehicle. Vapors from fuel or charging
batteries are highly flammable and explosive.
• Never leave vehicle unattended while running tests.
• Always keep a fire extinguisher suitable for all types of fires handy.
• Always turn ignition key OFF when connecting or disconnecting electrical
components, unless otherwise instructed.
• Use shop rags to cover fuel line fittings when connecting or disconnecting fuel
lines. Avoid contact with fuel. Dispose of all rags properly.
• Clean up all fuel spills immediately.
• Keep away from engine cooling fan. On some vehicles, the fan may start up
unexpectedly.
• You must follow vehicle service manual cautions when working around the air
bag system. If the cautions are not followed, the air bag may open unexpect-
edly, resulting in personal injury. Note that the air bag can still open up several
minutes after the ignition key is turned OFF (or even if the battery is discon-
nected) because of a special energy reserve module.
• Always follow vehicle manufacturer’s warnings, cautions, and service procedures.
Safety
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