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9.3. Reading of the DTC codes, processor memory cleaning

Reading of codes

One of the functions which are carried out by the module of management of AT (TCM) is continuous failure diagnostics of components of a control system of transmission (information sensors, actuation mechanisms and actually TCM). In case of detection of malfunction the module of management fixes a 5-unit diagnostic code (DTC) tied to the corresponding contour of a control system in the memory. The list of the most typical codes is provided in Specifications of the Head Automatic transmission.

For reading of DTC which are written down in the processor memory the special Hi-Scan Pro scanner (K2CA 089 HSP) connected to located in a motive compartment to the diagnostic socket equipped with a folding cover is used (see Power supply systems, managements of engine/decrease in toxicity of the fulfilled gases and production of the fulfilled gases).

 PERFORMANCE ORDER

  1. Connect the scanner, include ignition and, working according to instructions of manufacturers of the device, carry out a survey of the processor memory of TCM, - in the presence in memory of codes of malfunctions (DTC), make the corresponding recovery procedures.

In the absence of near at hand scanner reading of codes can be made by means of a control lamp of HOLD: at the switched-off ignition close the n plug on the plug of grounding ("s") of DLC, then turn a key in position of ON, - the table of codes of compliance and the chart of the principle of their highlighting are provided in Specifications of the Head Automatic transmission.

  1. In conclusion make cleaning of memory of TCM, then repeat the procedure of reading and make sure that the processor memory is empty.

Processor memory cleaning

Cleaning of memory of TCM is made by means of the scanner (act according to instructions of manufacturers of the device). Alternatively, it is possible to clear memory by short circuit of the j plug on the plug of grounding ("s") of DLC at the included ignition.

 PERFORMANCE ORDER

  1. In conclusion make sure that no DTC were brought in memory of the module repeatedly.