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.
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HOMESERVICE MANUALSAUDI2005A6 3.2 TREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 13 (3.0L - ENGINE CONTROLS - FUEL INJECTION & IGNITION, ENGINE CODE(S): AVK, BGN)28 IGNITION/GLOW PLUG SYSTEMIGNITION SYSTEM, CHECKINGMOTRONIC ENGINE CONTROL MODULE (ECM) POWER SUPPLY RELAY -J271-, CHECKINGCHECKING ACTUATION
2005 Audi A6 3.2 T
Checking actuation
2005 Audi A6 3.2 TSECTION Checking actuation
WARNING: This page is about a different car, the 2006 Audi A4, 2005 Audi A4, 2004 Audi A4, 2003 Audi A4, and 2002 Audi A4. However, it is still accessible from the selected car via links, so may be relevant.
- Connect multimeter as follows to measure voltage.
| Relay carrier in electronics box, plenum chamber, position 2 Terminal |
Measure to |
| 4 | Battery positive |
- Switch ignition on.
- Specified value: approx. battery voltage
If specified value is not attained:
- Switch ignition off.
- Connect test box VAG1598/31 to wiring harness for engine control module; do not connect engine control module. Refer to Wiring and component check with test box VAG 1598/31 .
- Check for open circuit and short to positive or ground in following wiring connection:
| Relay carrier in electronics box, plenum chamber, position 2 Terminal |
Test box V.A.G 1598/31 Socket |
| 4 | 23 |
- Repair any open/short circuit as necessary.
If no malfunction is found:
- Replace Motronic Engine Control Module (ECM) power supply relay -J271-.
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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.