2010 Mercedes Benz C 300 (204.054) V6-3.0L (272.947) Page 834

- Check voltage supply according to wiring diagram.

4. Check component Y32 (Air pump switchover valve).

Test 4.1: Test actuation of component Y32 (Air pump switchover valve).

Test 4.2: Test current consumption of component Y32 (Air pump switchover valve).

4.1. Test actuation of component Y32 (Air pump switchover valve).

Test sequence

- Switch on ignition.

- Actuate component Y32 (Air pump switchover valve).(Proceed to 'Actuation' with F2)

Warning!Communication with ECU required.

4.2. Test current consumption of component Y32 (Air pump switchover valve).

Figure legend

- A -ConnectionTest cable 35-pin socket box

- 001 -Sockets of component N3/10 (ME-SFI [ME] control unit)

- 05 -35-pin socket box

- 050 -126-pin socket box

- 108 -Test cable 266 589 01 63 00

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

- II 1-63ConnectionTest cable

- III 64-126ConnectionTest cable

Warning!

- 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.