The built-in diagnostics system is installed on cars, designed to control the technical condition of the car using a motor tester. This system includes a sensor 17 (see fig. 123) w.m.t. piston of the 1st cylinder of the engine and block 26 for diagnosing, on which the following control points of the electrical system are displayed: «plus» battery terminal «30» generator, body (weight) vehicle, ignition coil low voltage terminals and T.M.T.
Using a mounted high voltage sensor and a motor tester, the diagnostic system allows you to determine the reduction in compression in the engine cylinders, the degree of charge and the state of the battery, the health of the generator, starter and ignition system.