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Home >> BMW >> 2002 >> M Coupe >> Repair and Diagnosis >> Engine Performance >> Ignition System >> Engine Electrical System - Repair Instructions >> Troubleshooting >> 12 00... Breakerless ignition distribution
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12 00... Breakerless ignition distribution

  1. Engine must never be started after disconnection of the secondary circuit, i.e. disconnection of connectors on spark plugs and earth connection (terminal 4a).
  2. There is dangerous high tension in or on:
    1. ignition leads
    2. spark-plug connectors
    3. spark plugs
    4. ignition coil terminal 4
      CAUTION: approx. 40 kV high tension
  3. terminal 1 wire from ignition coil to DME control unit
    CAUTION: approx. 350 V high tension at terminal 1
  4. Battery as well as wires on alternator and starter may not be disconnected on a running engine.