Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2002 BMW M CoupeFACTORY OEM SERVICE PROCEDURE
12 00... Breakerless ignition distribution
- Engine must never be started after disconnection of the secondary circuit, i.e. disconnection of connectors on spark plugs and earth connection (terminal 4a).
- There is dangerous high tension in or on:
- ignition leads
- spark-plug connectors
- spark plugs
- ignition coil terminal 4CAUTION: approx. 40 kV high tension
- terminal 1 wire from ignition coil to DME control unitCAUTION: approx. 350 V high tension at terminal 1
- Battery as well as wires on alternator and starter may not be disconnected on a running engine.
Factory Service Tools
Use the Manual With the Right Hardware
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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.
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