2010 Mercedes Benz C 300 (204.054) V6-3.0L (272.947) Page 2914

- Voltage [11.0 ... 14.5] V

Question:

- Is the actual value o.k.?

YES

The actual value is okay.Possible cause and remedy

- If fault code 9010/9011 occurs without complaints or function faults, erase fault memory and perform a function check.

- In the event of stored faults with a high fault frequency count or in the event of customer complaints, check lines and connectors for loose

contact and corrosion..

- Check alternator.

End of test

NO

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

- Test voltage supply of component N80 (Steering column module) by means of measured value.

End of test

1.3.2.1.7.3. Test voltage supply of circuit 30 by means of measured value.

Manual check of supply voltage

Test prerequisite

- Fuse F34f33 (Fuse 33) in component F34 (Interior fuse box) is o.k.

- Actual value is not okay or there is a complaint.

Status of relevant actual value:

- Voltage at terminal 30:Warning! Communication with ECU required.

Test sequence

- Switch off ignition.

- Remove component Airbag.

- Please refer to WIS document AR91.60-P-0660.

- Remove component Multifunction steering wheel.

- Please refer to WIS document AR46.10-P-0100.

- Remove component A45 (Clock spring contact).

- Please refer to WIS document AR46.10-P-0200.

- This information can be shown using the help function (F6 button) in menu item 'Testing and repair work'.

- Measure direct voltage with multimeter between sockets [N80] 1.8 and [N80] 1.9

Specified value

- Voltage [11.0...14.5] V

Question

- Is the measurement value OK?