Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information

Condition




Diagnostic trouble code (DTC) SUM-0201 is stored if the Suspension Module (SUM) registers that the battery voltage is too low when the ignition is switched on.

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
- The Four-C function is blocked.

Hint: For information about abbreviations for the suspension system, see Suspension system, abbreviations Description and Operation.

Possible source
- Battery voltage too low
- Contact resistance in the terminals
- Open-circuit or short-circuit to ground in the power supply to the Suspension Module (SUM)
- Defective Suspension Module (SUM).

Fault symptom[s]
- General warning lamp lit
- Message in the display
- Four-C does not work.