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.
1994 Porsche 911 Speedster, AutomaticFACTORY OEM SERVICE PROCEDURE
Ignition Output Control Signal
- Ensure DME control unit is properly connected. Connect oscilloscope positive lead to terminal No. 5 (White wire) and negative lead to terminal No. 2 (Brown wire) of the ignition control unit. See Figure .
- Using ignition switch, operate starter motor. Oscilloscope must show DME control unit signal. See Figure . If replacing ignition control unit, apply Heat Conducting Paste (5-942-860-003) to ignition control unit base plate.
Factory Service Tools
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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.