Saab 9-5

since 1997 of release

Repair and car operation

Search of malfunctions – the general information

At AT failure detection first of all check ATF level (see. Head of Control and routine maintenance of the car). If level is insufficient, check a condition of the corresponding epiploons. Attentively examine all hoses of a path of ATF, and also its cooler and make sure of lack of signs of development of leaks. By strengths of the owner of a vehicle check/replacement of information sensors of a control system of AT, and also replacement of components of a drive of a choice of AT modes can be executed.

Before starting replacement of the suspected sensor, poll memory of the control unit, - all a little essential refusals are registered in memory of the module in the form of the DTC codes, and in especially serious cases of AT is automatically switched to emergency operation of functioning to what testifies corresponding To/l in a combination of devices. Reading of the DTC codes is made by means of the special diagnostic equipment connected to the socket of system of onboard self-diagnostics (DLC) (see. Head of System of electric equipment of the engine).

In the absence of access to necessary devices will try to define qualitatively at least the refusal nature (electric/mechanical) for the purpose of simplification of communication with specialists of car-care center enough. It is not necessary to start AT removal as its diagnostics is represented possible only in the established situation prematurely.