Selectable Functions (Modes) Under Address Word 33, CARB/OBD II

On Board Diagnostic II (OBD II), Functions


NOTE: The following modes can be selected via address word 33;


Mode Function
1 Transmit diagnostic data:
- Only certain individual test values can be read. Read the the measuring value block by using address word 02, function 08.
2 Not applicable
3 Check DTC memory:
- Only emissions-influencing malfunctions are indicated immediately or after two driving cycles (Dcy), depending on the malfunction, via the corresponding P-codes. Check DTC memory by using address word 02, function 02.
4 Erase DTC memory:
- DTC memory can be erased, even if it has not previously been read. Erase DTC memory by using address word 02, function 05.
5 Not applicable
6 Not applicable
7 OBD test results, continuously monitored:
- Emissions-related malfunctions can be read, even if these malfunctions have not existed long enough for the MIL to be switched on.
8 Not applicable
9 This mode only applies as of model year 2000.
- The first value indicates the Part No. and the program or data status of the Transmission Control Module (TCM).
- The second value indicates a checking summation, for instance A357. This value is calculated internally and can be disregarded.


NOTE: There is no further detailed information about OBD.