12 00... Instructions on component testing

2001 BMW 325Ci 2D Convertible, AutomaticSECTION 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 Diagnosis Information System (DIS).
  • Only ever use test lines, adapters, terminals and test tips manufactured by specialists, refer to Diagnosis Information System, Repair Manual.
  • The inspection values for component testing are located in the Diagnosis Information System (DIS).
  • For further technical information, refer to Technical Data.
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.