Automotive mechanics are responsible for servicing and repairing motor vehicles. At various times, their work may involve inspection of problems, routine or preventive maintenance, replacement of parts, diagnostic troubleshooting, performance testing, and/or vehicle repair. Mechanics make use of a wide variety of tools, ranging from traditional hand tools to larger power tools to the computerized shop equipment needed for interfacing with the integrated electronic systems and complex computers which regulate most of today’s vehicles. During routine service inspections, mechanics will test and if necessary, repair or replace worn parts using a checklist to ensure that they examine every critical part. To handle more intensive repair jobs, mechanics may need to replace or overhaul major systems or components of the vehicle. Troubleshooting