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 Audi CabrioletFACTORY OEM SERVICE PROCEDURE
Fuel Injectors
- Disconnect fuel injector connector. Measure resistance across fuel injector connector terminals. If resistance is not 15-17 ohms, replace fuel injector. If resistance is 15-17 ohms, connect LED Tester (US 1115) between engine ground and fuel injector connector terminal No. 2. See Fig 1 .
- Operate starter for several seconds. If LED comes on, go to next step. If LED does not come on, check fuel pump relay, circuit breaker and wiring. See FUEL DELIVERY. If fuel pump relay, circuit breaker and wiring are okay, connect LED tester between battery positive source and fuel injector connector terminal No. 1.
- Operate starter for several seconds (engine may start). If LED flashes, fuel injector system is okay. If LED does not flash, check for faulty wiring. If wiring is okay, replace ECM. See the ELECTRICAL COMPONENT LOCATIONS table at beginning of article.
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.