C 230 (203.052) V6-2.5L (272.920) (2007)
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Safety circuit
The task of the safety circuit is to detect faulty signals in the control unit and faults in the electrical cabling system.
The following components are monitored continuously:
^
BAS solenoid valve (A7/7y1)
^
BAS diaphragm travel sensor (A7/7b1)
^
BAS release switch (A7/7s1) and
^
stop lamp switch (S9/1).
If a fault is detected, the system switches off. This is indicated to the driver by switching on the indicator lamp:
^
BAS, BAS/ETS, BAS/ASR or BAS/ESP indicator lamp (A1 e39, e49, e48 or e47).
^
In models 203, 209, 215, 220 via the multifunction display (A1p13).
In addition, a fault code is stored in the control unit.
The safety circuit also constantly monitors the battery voltage. If the voltage falls below 10 V or exceeds 16-18 V, the system is also switched off until
the voltage returns to the specified range.
