Structure of the procedure
| Number | Designation |
|---|---|
| 1 | Fault code description display and subsequent control unit test |
| 2 | Fault memory treatment |
| 3 | Branching with selection of additional functions |
| 4 | Fault symptoms |
| 5 | Advanced test modules (for example customer-initiated software update) |
| 6 | USB test |
| 7 | Bluetooth test |
| 8 | Exit or exit with a feedback signal |
The test module for the < telecommunication system check > starts with the display of the fault code description. A control unit test is performed following this display. This control unit test is used to determine the current system status. The control unit test takes place in the background.
The fault memory for the currently installed control units is read out after the control unit test. The procedure is continued with the handling of the currently available fault code entries.
After processing of the fault code entries, a selection structure is displayed that offers the following options (depending on the control unit or vehicle equipment):
- Fault symptoms
The functional description contains the known fault symptoms for the installed telephone system. Within the functional description, hyperlinks can be used to navigate between the individual topics. Additional information, such as the part number or Bluetooth status, are displayed in the test module. Note on the display of the optional equipment installed in the vehicle: Optional equipment numbers can be entered at the menu item "Show vehicle data". These are then automatically checked and flagged as "installed" or "not installed".
- Further procedures
The advanced test modules deal with special functions of the control units, such as customer-initiated software update (KISA).
- USB test and Bluetooth test
The USB test and the Bluetooth test are available in the test module as integrated checks. To access these tests, the Integrated Measurement Interface Box (IMIB) must be logged on in the network and connected with the ISID. The tests run automatically. It is no longer necessary to manually carry out the tests directly on the Integrated Measurement Interface Box (IMIB).
After all relevant test steps have been executed, the procedure can be ended or ended with a feedback signal. Select the corresponding identified fault cause here and the corresponding diagnosis code is displayed.
The procedure for the < telecommunications system check > is extended continuously and the contents of the DTC procedures and the fault symptoms are updated regularly.