9.2. Search of malfunctions - the general information

At failure detection of automatic transmission first of all check the ATF level (see the Head the Current leaving and service). If level is insufficient, estimate a condition of the corresponding epiploons. Attentively examine all hoses of a path of ATF, and also the heat exchanger of a cooler of transmission liquid and make sure of lack of signs of development of leaks. The only thing that can be still executed by forces of the owner of the vehicle, is check/replacement of information sensors of a control system of AT. Before starting replacement of the suspected sensor, carry out a survey of memory of the module of management (TCM), - all a little essential refusals are registered in memory of the module in the form of the DTC codes (the list of codes see in Specifications of the Head Automatic transmission).

In case of especially serious violations of TCM automatically switches transmission to emergency operation of functioning.

Reading of the DTC codes is made by means of the special scanner connected to the socket of system of onboard self-diagnostics (DTC) (see the Section Reading of the DTC Codes, processor memory cleaning), - in the absence of access to the necessary equipment will be to try to define the refusal nature at least qualitatively enough (at the level: electric/mechanical) for the purpose of simplification of communication with specialists of car service. It is not necessary to start removal of AT as its diagnostics is represented possible only in the established situation prematurely.