2010 Mercedes Benz C 300 (204.054) V6-3.0L (272.947) Page 430

Test voltage supply of circuit 87.

Test sequence

- Measure direct voltage with multimeter between sockets [ F.2 ] 98 and [F.3] 99 of the 126-pole socket box tester.

- Measure direct voltage with multimeter between sockets [ F.4 ] 100 and [ F.5 ] 101 of the 126-pole socket box tester.

- Measure direct voltage with multimeter between sockets [ F.6 ] 102 and [ F.5 ] 101 of the 126-pole socket box tester.

- Switch on ignition.

Specified value

- Voltage[11.0...15.0] V

Question

- Are the measurement values OK?

YES

The measurement values are OK.Further possible causes of fault

- Test voltage supply of circuit 30.

NO

The measurement values are not OK.Possible cause and remedy

- N10/1f43 (Fuse 43)

- N10/1f44 (Fuse 44)

- N10/1kI (Circuit 87 relay, engine)

- Lines

- N10/1 (Driver-side SAM control unit with fuse and relay module)