Manufacturer Code Charts: 1075

Y22/6 (variable intake manifold switchover valve) : Open circuit


Possible cause:

- Z7/36 (Circuit 87 M2e connector sleeve)
- Y22/6 (variable intake manifold switchover valve)
- K40/4f43 (Fuse 43)
- K40/4kK (Engine electronics and chassis relay)
Affected functions:

- Engine output

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Test 1: Arrangement of fuses

Test 2: Check component Y22/6 (variable intake manifold switchover valve).

Test 3: Power supply

1. Arrangement of fuses
End of test

2. Check component Y22/6 (variable intake manifold switchover valve).

Test 2.1: Test current consumption of component Y22/6 (variable intake manifold switchover valve).

Test 2.2: Test actuation of component Y22/6 (variable intake manifold switchover valve).

2.1. Test current consumption of component Y22/6 (variable intake manifold 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).







Test prerequisites

- Actuation is not OK.
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.19) 19 of the 126-pole socket box tester.
- Switch on ignition.
Specified value

- Amperage[0.2...0.6] A
Question

- Is the measurement value OK?


YES
The measurement value is OK.Further possible causes of fault

- Vacuum unit for variable intake manifold
End of test

NO
The measurement value is not OK.Possible cause and remedy

- Voltage supply of component Y22/6 (variable intake manifold switchover valve)(K40/4f44 (Fuse 44))
- Wiring from control unit N3/10 (ME-SFI [ME] control unit) to component Y22/6 (variable intake manifold switchover valve)
- Y22/6 (variable intake manifold switchover valve)







2.2. Test actuation of component Y22/6 (variable intake manifold switchover valve).
Test prerequisite

- The vacuum system is leaktight.
Test sequence

- Run the engine for a short time and switch off again.
- Switch on ignition.
- Actuate component Y22/6 (variable intake manifold switchover valve).(Actuate with key F2.)
Specified value

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







Warning!Communication with ECU required.


3. Power supply
Voltage supply via component Z7/36 (Circuit 87 M2e connector sleeve)
Possible cause and remedy

- Check voltage supply according to wiring diagram.