The table of diagnostics of an automatic transmission

1. The analysis of complaints of the customer.

Write down according to the customer of a detail of a problem (malfunction, the complaint) and how it has arisen. For this purpose take advantage of the questionnaire form in which the information necessary for the correct analysis and diagnostics is entered.

2. Check, registration and сбрасывание codes of malfunctions (DTC) / the data of a framework of freezing.

At first, as it is described in section of check of codes of malfunctions (DTC), check up codes of malfunctions (including a considered code). If codes of malfunctions are, unpack or write down their and given frameworks of freezing, and then "dump" them as it is described in section сбрасывания codes of malfunctions. The malfunction code testifies to a malfunction in system, but on it it is impossible to define, whether there is a malfunction now, or it was in the past, and now the normal state was restored. To learn it, it is necessary to check up a considered symptom as it is described in a step 5, and then to recheck codes of malfunctions as it is described in a step 6.

If to diagnose malfunction on a basis only codes of malfunctions of this step or not to dump a malfunction code in this step it can lead to erroneous diagnostics, diagnostics of nonexistent malfunction of a normal chain or difficulty at отыскивании damages which in everyday occurences do not arise.

3 and 4. Visual survey.

As a preparatory step spend visual check of parts which support correct work of an automatic transmission and the engine as it is described in Section Visual survey.

5. Acknowledgement of a symptom of malfunction.

Check up signs of malfunctions on the basis of the information received in a step 1 and step 2. Besides, recheck codes of malfunctions according to procedure of acknowledgement of codes of the malfunctions, described in each Table of codes of malfunctions (DTC).

6 both 7. Recheck and record of codes of malfunctions / the data of a framework of freezing.

Procedure of check of sm in Section the Table of codes of diagnostics of malfunctions (DTC) (the Code of automatic transmission).

8. The basic check of an automatic transmission and the table of diagnostics of malfunctions.

At first execute the basic check of an automatic transmission according to Section the Basic check of automatic transmission. When will reach the table end, check up, how it is described in Tables of diagnostics of malfunctions and on the basis of signs available for the car (signs are received by results of the analysis of complaints of the customer, acknowledgement of a symptom of malfunction and \or the basic check of an automatic transmission), those parts of system which, on your suspicion, can cause malfunction, and repair or replace faulty parts if those appear.

9. The diagnostic table of codes of malfunctions.

On the basis of codes of the malfunctions specified in a step 6 and 7, and the Table of diagnostics of malfunctions in the given Section define a cause of defect, namely, in the gauge, the switch, conducting, a socket, a drive, the electronic block of management or other part, and repair or replace faulty parts.

10. Check of periodic problems.

Check up those parts in which occurrence of periodic problems (for example, conducting, sockets, etc.) as it is described in the Head the General information, in Section Interrupting or weak connection and in the corresponding scheme of codes of malfunctions in a step 2 is the most probable.

11. Final confirming check.

Confirm that the malfunction sign is eliminated, and in an automatic transmission there are no supernumerary conditions. If the corrected malfunction is connected with a code of malfunction of infringement of work, "dump" a malfunction code, establish a condition at which it is a code has arisen, and the automatic transmission and-or the car has been repaired, and confirm that the code of malfunction is not present more.

The form of check of malfunction for the customer (example)