Test sequence
- Switch off ignition.
- Connect socket box to component N3/10 (ME-SFI [ME] control unit).
- Connector F is plugged in at control unit.
- Unplug the socket F from the wiring harness at the socket box.
- Measure resistance with multimeter between sockets (F.41) 11 and (F.54) 24 of the 35-pole socket box tester.
Specified value
- Resistor[115...125]ohms
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
- Control unit N3/10 (ME-SFI [ME] control unit)
End of test
1.1.3.2.2. Voltage supply of engine compartment CAN control modules
Test 1.1.3.2.2.1: Check power supply at control unit A1 (Instrument cluster).
Test 1.1.3.2.2.2: Check power supply at control unit A89 (DTR controller unit).
Test 1.1.3.2.2.3: Check power supply at control unit N3/10 (ME-SFI [ME] control unit).
Test 1.1.3.2.2.4: Check power supply at control unit N15/3 (ETC [EGS] control unit).
Test 1.1.3.2.2.5: Check power supply at control unit N15/5 (Electronic selector lever module control unit).
Test 1.1.3.2.2.6: Check power supply at control unit N15/6 (Sprintshift control module).
Test 1.1.3.2.2.7: Check power supply at control unit N47-5 (ESP, SPS [PML] and BAS control unit).
Test 1.1.3.2.2.8: Check power supply at control unit N51 (AIRmatic with ADS control module).
Test 1.1.3.2.2.9: Check power supply at control unit N63/1 (DTR control module).
Test 1.1.3.2.2.10: Check power supply at control unit N71 (Headlamp range adjustment control module).
Test 1.1.3.2.2.11: Check power supply at control unit N73 (EIS [EZS] control unit).
Test 1.1.3.2.2.12: Check power supply at control unit N80 (Steering column module).
Test 1.1.3.2.2.13: Check power supply at control unit Y3/8n4 (Fully integrated transmission control (VGS) control unit).
1.1.3.2.2.1. Check power supply at control unit A1 (Instrument cluster).
Test prerequisites
- The fuses are OK.
- The power supply of the control unit N10/1 (Front SAM control unit with fuse and relay module) is OK.
Test sequence
- Switch off ignition.
- Detach the socket at component A1 (Instrument cluster).
- Measure direct voltage with multimeter between sockets (A1) 1 and (A1) 6
- Measure direct voltage with multimeter between sockets (A1) 2 and (A1) 6
- Measure direct voltage with multimeter between sockets (A1) 3 and (A1) 6
- Switch on ignition.
Specified value
- Voltage [11.0...14.5] V
Question:Is the measurement value OK?
