2010 Mercedes Benz C 300 (204.054) V6-3.0L (272.947) Page 915

- Erase fault memory and start engine.

- Reread fault memory of control unit N3/10 (ME-SFI [ME] control unit).If fault reoccurs, replace component N3/10 (ME-SFI [ME] control

unit).

Read coding and transfer to the new control unit.End of test

1185

Y22/9 (Intake manifold tumble flap switchover valve) : Short circuit to positive (P2010)

Possible cause:

- Y22/9 (Intake manifold tumble flap switchover valve)

Affected functions:

- Engine output

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Test 1: Check component Y22/9 (Intake manifold tumble flap switchover valve).

1. Check component Y22/9 (Intake manifold tumble flap switchover valve).

Test 1.1: Test actuation of component Y22/9 (Intake manifold tumble flap switchover valve).

Test 1.2: Test current consumption of component Y22/9 (Intake manifold tumble flap switchover valve).

1.1. Test actuation of component Y22/9 (Intake manifold tumble flap switchover valve).

Test prerequisite

- The vacuum system is leaktight.

Test sequence

- Operate engine at idling speed.

- Actuate component Y22/9 (Intake manifold tumble flap switchover valve).(Actuate with key F2.)

Specified value

- Testing The rod of the vacuum unit can be seen to operate.The linkage of the swirl flap can be seen to move.(See arrow)

Warning!Communication with ECU required.