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.
2006 Audi A4 Base, 2D ConvertibleFACTORY OEM SERVICE PROCEDURE
1.8L - Ignition System, Engine Code(S): AMB
- Ignition System
- Ignition system, checking
- General notes on ignition system
- Safety precautions
- Technical Data
- Ignition coils with power output stages, checking
- Motronic ECM Power supply relay - J271-, checking
- Engine speed (RPM) sensor -G28-, checking
- Intake Air Temperature (IAT) sensor -G42-, checking
- Engine Coolant Temperature (ECT) sensor -G62-, checking
- Motronic Engine Control Module (ECM) power supply, checking
- Knock recognition control limit, checking
- Knock sensors, checking
- Camshaft position (CMP) sensor -G40-, checking
- Misfire recognition, checking
- Ignition system, checking
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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