201B

Voltage supply of component N3/10 (ME-SFI [ME] control unit) (P0560, P0561, P0562, P0563)


Possible cause:

- Voltage supply at control module
Affected functions:

- Battery / On-board electrical system
- Engine diagnosis

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Test 1: Check power supply of component N3/10 (ME-SFI [ME] control unit).

1. Check power supply of component N3/10 (ME-SFI [ME] control unit).

Test 1.1: Test voltage supply of circuit 30. ( Check using actual value )

Test 1.2: Test voltage supply of circuit 30. ( Check using measured value )

Test 1.3: Test voltage supply of circuit 87.

1.1. Test voltage supply of circuit 30. ( Check using actual value )
Test prerequisite

- Relevant event code are present or there is a complaint.
Status of relevant actual value:
- Battery voltage:Warning! Communication with ECU required.
Specified value

- Battery voltage[11.0 ... 14.5] V
Question:Is the actual value o.k.?

YES
The actual value is okay.End of test

NO
The actual value is not o.k.Possible cause and remedy

- Test voltage supply of circuit 30.(Check using measured value)
- Test voltage supply of circuit 87.
End of test

1.2. Test voltage supply of circuit 30. ( Check using measured value )
Test sequence

- Switch off ignition.
- Connect socket box (35-pin) to component N3/10 (ME-SFI [ME] control unit).(Refer also to Help menu point 'Basic knowledge')
- Measure direct voltage with multimeter between sockets (5.5) 5 and (5.3) 3 of the 35-pole socket box tester.
- Measure direct voltage with multimeter between sockets (5.6) 6 and (5.3) 3 of the 35-pole socket box tester.
- Measure direct voltage with multimeter between sockets (5.7) 7 and (5.3) 3 of the 35-pole socket box tester.
Specified value

- Voltage[11.0...14.5] V
Question

- Are the measurement values OK?


YES
The measurement values are OK.Further possible causes of fault

- Test voltage supply of circuit 87.
End of test

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

- N10/1f20 (Fuse 20)
- Line from component N10/1 (Front SAM control unit with fuse and relay module) to component N3/10 (ME-SFI [ME] control unit)
- Wiring from control unit N3/10 (ME-SFI [ME] control unit) to component W34/1 (Electronics ground (left footwell))
- N10/1 (Front SAM control unit with fuse and relay module)
End of test







1.3. Test voltage supply of circuit 87.
Test sequence

- Switch off ignition.
- Connect socket box (35-pin) to component N3/10 (ME-SFI [ME] control unit).
- Measure direct voltage with multimeter between sockets (5.5) 5 and (5.9) 9 of the 35-pole socket box tester.
- Switch on ignition.
Specified value

- Voltage[11.0...14.5] V
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

- N10/1f21 (Fuse 21)
- N10/1kC (Circuit 87 relay, engine)
- Line from component N10/1 (Front SAM control unit with fuse and relay module) to component N3/10 (ME-SFI [ME] control unit)
- Wiring from control unit N3/10 (ME-SFI [ME] control unit) to component W34/1 (Electronics ground (left footwell))
- N10/1 (Front SAM control unit with fuse and relay module)
End of test