12 00... Instructions on component testing

NOTE:

During all inspections and work on engine electrics and electronics, always observe safety regulations and accident prevention specifications.
Always disconnect connectors of control units or components before checking electric wires.

Testing Aids:

Schematics, refer to BMW Diagnosis Information System (DIS)
Use appropriate test lines, adapters, terminals and test tips, refer to BMW Diagnosis Information System (DIS)
The inspection values for component testing are located in the BMW Diagnosis Information System (DIS)