3.3.7. Self-diagnostics function

Connect a tester of HI-SCAN (Pro) to the standard diagnostic socket (DLC).
Consider the codes of malfunctions given by system of self-diagnostics of the automatic transmission. Then eliminate malfunctions according to 3:13.

NOTE
In random access memory (RAM) of an electronic control unit at most 8 diagnostic codes of malfunctions can be written down (as their emergence).
In case of repeated emergence of any code of malfunction, it will be written down in memory only once.
If the quantity of the written-down diagnostic codes of malfunctions or conditions of emergence of malfunction (diagnostic trouble patterns) exceeds 8, then the codes of malfunctions which are written down earlier will be removed from memory in the sequence, starting with the earliest.
Do not disconnect the rechargeable battery before reading of diagnostic codes of malfunctions or conditions of emergence of malfunction (diagnostic trouble patterns) as in case of a detachment of the rechargeable battery they will be removed from memory of an electronic control unit.

If the system switched over managements to emergency operation and the transmission is fixed on the 3rd transfer (gear shifting is blocked), then in random access memory (RAM) of an electronic control unit the diagnostic code of malfunction in the form of a code of emergency operation of work registers. In total in memory three such codes of malfunction can be written down.
If the transmission works only at the third transfer (gear shifting is blocked) and the key of the lock of ignition is turned in the provision of "OFF" ("Off"), then emergency operation of work will be cancelled (cancellation), but diagnostic codes of malfunctions will remain in random access memory (RAM) of an electronic control unit.

Storing of information in memory (memorization)
In memory no more than 8 diagnostic codes of malfunctions and 3 parameters of emergency operation of work can be kept.
If the capacity of memory does not allow to make record of new information, then instead of the diagnostic codes of malfunctions and parameters of emergency operation of work which are stored in memory will be rewritten new in the sequence, starting with the earliest.
The same code of malfunction cannot be written down in memory more than once.

Automatic removal of codes of malfunctions from memory (Automatic deletion)
All diagnostic codes of malfunctions automatically are removed from memory after oil temperature in the automatic transmission (ATF) reaches 50 °C during 200 times after record of the last code of malfunction in memory.
Compulsory removal of codes of malfunctions from memory
(Forced deletion)
The diagnostic codes of malfunctions which are stored in memory can be removed by means of a tester if the following conditions are satisfied:
– an ignition lock key in the provision of "ON";
– signals (impulses) from the sensor of provision of a bent shaft are not found;
– signals (impulses) from the sensor of frequency of rotation of an output shaft of the check point are not found;
– signals (impulses) from the car speed sensor are not found;
– emergency operation of work is not included.