2010 Mercedes Benz C 300 (204.054) V6-3.0L (272.947) Page 1045

Specified values

- Ignition ON: >3.5 V

- Operate engine at idling speed.(Vacuum> 500 mbar):< 2 V

Question

- Are the measurement values OK?

YES

The measurement values are OK.End of test

NO

The measurement values are not OK.Possible cause and remedy

- Lines to component B28 (Pressure sensor)

- B28 (Pressure sensor)

Further possible causes of fault

- Vacuum line

End of test

1921

SBC : Undervoltage supply

Possible cause:

- N3/10 (ME-SFI [ME] control unit)

Affected functions:

- Battery / On-board electrical system

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Test 1: Check power supply of component N3/10 (ME-SFI [ME] control unit).

Test 2: Check component A7/3n1 (SBC control unit).

1. Check power supply of component N3/10 (ME-SFI [ME] control unit).

Test 1.1: Test voltage supply of circuit 87. ( Check using actual value )

Test 1.2: Test voltage supply of circuit 30.