U Scanner Manual - Beat The Garage

1. Safety Precautions and WarningsTo prevent personal injury or damage to vehicles and/or the scan tool, read thisinstruction manual first and observe the following safety precautions wheneverworking on a vehicle:• Always perform automotive testing in a safe environment.• Wear safety eye protection that meets the required standards.• Keep clothing, hair, hands, tools, test equipment etc away from allmoving or hot engine parts.• Operate the vehicle in a well ventilated work area. Exhaust gasesare poisonous.• Put blocks in front of the drive wheels and never leave the vehicleunattended while running tests.• Use extreme caution when working around the ignition coil, distributorcap ignition wires and spark plugs. These components createhazardous voltages when the engine is running.• Put the transmission in PARK (for automatic transmission) or NEUTRAL(for manual transmission) and make sure the parking brake is engaged.• Keep a fire extinguisher suitable for gasoline/chemical/electrical firesnearby.• Don’t connect or disconnect any test equipment while the ignition is onor the engine is running.• Don’t connect or disconnect any test equipment while the ignition is onor the engine is running.• Keep the scan tool dry, clean, free from oil/water or grease. Use a milddetergent on a clean cloth to clean the outside of the scan tool whennecessary.2. General InformationThe first generation of On-Board Diagnostics called OBDI were developed bythe California Air Resources Board (ARB) and implemented in 1988 to monitorsome of the emission control components on vehicles. As technology evolvedand the desire to improve the On-Board Diagnostic system increased, a newgeneration of On-Board Diagnostic System was developed. This secondgeneration of On-Board Diagnostic regulations is called OBDII.The OBDII system is designed to monitor emission control systems and keyengine components and vehicle conditions. When a problem is detected, theOBDII system turns on a warning lamp (MIL) on the vehicle instrument panel toalert the driver typically by the phrase of “Check Engine” or “Service EngineSoon”. The system will also store important information about the detected