Diagnostic Trouble Code (DTC) Information
Condition
The control modules in the car communicate with each other in a network via a standardized serial communication interface - Controller Area Network (CAN) - to exchange information. Diagnostic trouble code (DTC) SUM-E000 is stored if the Suspension Module (SUM) registers that there is no CAN communication.
NOTE:
The test is carried out every other operating cycle.The Suspension module (SUM) defines an operating cycle as ignition on and ignition off.
Substitute Value
- CAN communication is disabled
- Four-C control is blocked.
HINT: For information about abbreviations, see Suspension System, Abbreviations .
Possible Source
- Contact resistance in the terminals
- Open-circuit in one or both signal cables
- Short-circuit to ground, voltage or each other in one or both signal cables
- Defective Suspension Module (SUM).
Fault symptom[s]
- General warning lamp lit
- Message in the display
- Four-C does not work.