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E46 Diagnostic Concept: Notes

E46 diagnosis is set apart from traditional diagnosis procedures by the fact that it proceeds directly from the faults and their symptoms. Not only does this minimize time and effort but the quality of repair services can be significantly enhanced. Troubleshooting has become an integrated procedure covering all systems at once.

The diagnosis program suggests a test schedule and determines the sequence of tests. These features allow faults to be located more easily and with greater precision.

E46 Diagnostic Procedural Steps: 

  1. Start of diagnosis
  2. Vehicle identification
  3. Short test (mandatory)
  4. Fault symptom selection
  5. DIS Test Schedule (inspection plan)
  6. Processing of test modules (test information)
  7. Examining results of diagnosis
Fig 1: Diagnostic Procedural Steps
G03395125Courtesy of BMW OF NORTH AMERICA, INC.

The E46 Diagnostic Concept is also used for E36/7,E38, E39, E53, E52 vehicles.