An interface error is stored in the DSC control unit. Details can be determined using 'Control unit functions - Read fault code memory'.
For the DSC function, information from partner control units is essential. The fault is entered of the relevant partner control unit (= interface to the DSC) sends a default value or invalid ID instead of the required information to the DSC and this impairs the DSC function. In this case, a fault code memory entry should also be made in the corresponding partner control unit.
For this fault, the cause does NOT lie in the DSC control unit or in the DSC software!
Possible causes of fault:
- the relevant partner control unit is not yet operational
- the sensor system of the relevant partner control unit is defective
- general malfunction of the partner control unit
Read the fault code memory of the relevant partner control unit and continue troubleshooting according to test plan in the relevant partner control unit. Delete the fault in the DSC control unit.
If work is currently being carried out on the vehicle and this causes the interface error in the DSC, under certain circumstances the corresponding fault code memory entry can only be made in the partner control unit after a terminal change. If necessary, run a terminal change. If no fault is stored in the relevant partner control unit, it can be assumed that there is a sporadic fault. There is no repair measure available for this case: Delete the fault in the DSC control unit.
Note on deleting the fault code memory
Under certain circumstances, the fault in the DSC can only be deleted after a terminal change. In this case, switch the ignition off, wait 10 seconds, switch the ignition on again and then delete the fault.