The measurement value is OK.Cause
- Control module has an internal error.
REMEDY
- Disassemble and assemble automatic transmission using the repair instructions.
- Exchange electrohydraulic control unit.
IMPORTANT NOTEFollowing the repair measures, the following checks MUST be carried out using the Diagnosis Assistance System, menu
'Control unit adaptations'
- Flash programming of control unit Y3/8n4 (Fully integrated transmission control (VGS) control unit)
- SCN coding
End of test
NO
The measurement value is not OK.Possible cause and remedy
- Diagnostic cable has short to ground.
- Inspect wiring and connectors at connection points for loose contacts, damage and corrosion. Repair or replace as required.
End of test
NO
The measurement value is not OK.Possible cause and remedy
- Diagnostic cable has open circuit.
- Inspect wiring and connectors at connection points for loose contacts, damage and corrosion. Repair or replace as required.
End of test
NO
The measurement value is not OK.Further causes
- Voltage supply line is not OK.
Press button "F2" for further tests
1.1.3.2.1.5. No further information available.
1.1.3.2.1.6. 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?
YES
The measurement value is OK.Possible cause and remedy
- Perform inspection of connector and of socket for bent pins and enlarged contacts.
- Control unit A1 (Instrument cluster)
End of test
NO
The measurement value is not OK.Possible cause and remedy
- Line between component A1 (Instrument cluster) and component N10/1 (Front SAM control unit with fuse and relay module)
- Lines between A1 (Instrument cluster) and W28/1 (Ground, left inner door sill)
- Perform inspection of connector and of socket for bent pins and enlarged contacts.
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