Checking internal resistance

WARNING: This page is about a different car, the 2006 Audi A4, 2005 Audi A4, 2004 Audi A4, and 2003 Audi A4. However, it is still accessible from the selected car via links, so may be relevant.

Disconnect connector at valve.

Fig 1: Connecting Multimeter To Valve (Resistance Measurement Range)

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Connect multimeter and measure resistance at valve.

Specification: 25.to 35 Ω

If reading does not match specification:

Replace Wastegate bypass regulator valve N75.

If measured value matches specification:

Check power supply.