2010 Mercedes Benz C 300 (204.054) V6-3.0L (272.947) Page 658

- Connection A of test cable 108 may NOT be connected to connection B of the 126-pin socket box (050).

Continue to test with button F2

Test prerequisite

- The actuation was not okay.

Test sequence

- Switch off ignition.

- Connect socket box (126-pin) to component N3/10 (ME-SFI [ME] control unit).

- Measure direct current with multimeter between sockets (F.4) 100 and [M.53] 53 of the 126-pole socket box tester.

- Switch on ignition.

Specified value

- Amperage[0.3...0.6] A

Question

- Is the measurement value OK?

YES

The measurement value is OK.End of test

NO

The measurement value is not OK.Possible cause and remedy

- N10/1f57 (Fuse 57)

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

- Line between component N3/10 (ME-SFI [ME] control unit) and component Y32 (Air pump switchover valve)

- Line between component N10/1 (Driver-side SAM control unit with fuse and relay module) and component Y32 (Air pump switchover valve)

- Y32 (Air pump switchover valve)

End of test

0849

Y58/1 (Purge control valve) : Short circuit to positive / Switchover valve permanently closed (P0459)

Possible cause:

- Y58/1 (Purge control valve)