2010 Mercedes Benz C 300 (204.054) V6-3.0L (272.947) Page 1022

The actual value is okay.End of test

NO

The actual value is not o.k.Possible cause and remedy

- Check power supply of component B28 (Pressure sensor).

- Test signal voltage of component B28 (Pressure sensor).

Further possible causes of fault

- Vacuum line

2.2. Check power supply of component B28 (Pressure sensor).

Figure legend

- B28 (Pressure sensor)

- 126/1 -'Secondary air injection left bank of cylinders' shutoff valve

Test prerequisite

- The actual value is not o.k.

Test sequence

- Switch off ignition.

- Detach coupling at component B28 (Pressure sensor).

- Measure direct voltage with multimeter between sockets (B28) 1 and (B28) 3

- Switch on ignition.

Specified value

- Voltage[4.75...5.25] V

Question

- Is the measurement value OK?

YES

The measurement value is OK.Further possible causes of fault

- Test signal voltage of component B28 (Pressure sensor).

NO

The measurement value is not OK.Possible cause and remedy

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