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Home >> BMW >> 2004 >> 525i Standard >> Repair and Diagnosis >> Engine Performance >> Ignition System >> Engine Electrical System - Repair Instructions >> Trouble shooting >> 12 00 Contents of Engine Electrical System General >> 12 00 Instructions On Component Testing

12 00 Instructions On Component Testing

NOTE: During all inspections and work on engine electronics, always observe safety regulations and accident prevention specifications.

Always disconnect connectors of control units or components before checking electric wires.

Testing Aids 

Schematics

Only ever use test lines, adapters, terminals and test tips manufactured by specialists

Inspection values