Test prerequisite
- The fuses are OK.
- One of the fault codes 9010/9011 is present, or the associated actual value is not OK.
Test sequence
- Remove component N80 (Steering column module).
- Disconnect connector A at component N80 (Steering column module).
- Switch on ignition.
- Measure direct voltage with multimeter between sockets [N80] A.8 and [N80] A.9
Specified value
- Voltage [11.0...14.5] V
Question
- Is the measurement value OK?
YES
The measurement value is OK.Possible cause and remedy
- Inspect connector A at control unit N80 (Steering column module) for damage, correct connection, loose contact and corrosion and repair, if
necessary.
- Otherwise select further tests.
End of test
NO
The measurement value is not OK.Possible cause and remedy
- Line between component N80 (Steering column module) and component N10/1 (Driver-side SAM control unit with fuse and relay module)
- Z7/58 (Circuit 30 connector sleeve)
- Line between component N80 (Steering column module) and component W15/1 (Ground (right footwell))
- Z6 (Ground connector sleeve)
- N10/1 (Driver-side SAM control unit with fuse and relay module)
End of test
2.1.3.2.2. Resistance test of engine compartment CAN
Test 2.1.3.2.2.1: Test total resistance of engine compartment CAN.
Test 2.1.3.2.2.2: Test terminating resistor of component X30/5 (Left voltage distributor (CAN) connector).
Test 2.1.3.2.2.3: Test terminating resistor of CAN element in control module N3/10 (ME-SFI [ME] control unit).
2.1.3.2.2.1. Test total resistance of engine compartment CAN.
Test 2.1.3.2.2.1.1: Perform measurement at component X30/5 (Left voltage distributor (CAN) connector).
Test 2.1.3.2.2.1.2: Perform measurement at component N3/10 (ME-SFI [ME] control unit).
2.1.3.2.2.1.1. Perform measurement at component X30/5 (Left voltage distributor (CAN) connector).
Test total resistance of engine compartment CAN.
Figure legend
- X30/5 (Left voltage distributor (CAN) connector)
Test sequence
- Switch off ignition.
- Measurement with multimeter
- (X30/5) 2.Measure resistance with multimeter between pins 2 and 2.1 (X30/5)
Adapter cable no. W220 589 00 99 36 may be used.Specified value
- [55...65]ohms
Question:
- Is the measured value within the specified value range?
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