S 420 (140.043) V8-4.2L (119.981) (1996)
Central Power Supply: Description and Operation
Task
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Voltage supply of control modules and electrical components
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Protecting circuit of control modules and electrical components
Design
Plastic housing with fuses and relays depending on vehicle model and equipment
Function
Fuse trips in the event of:
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overload
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excessively long overvoltages
NOTE: The base module does not have a fault memory. It does not have a diagnostic capability.
The overvoltage protection function is performed by the regulator of the generator.