Current Test
WARNING: This page is about a different car, the 2001 Audi allroad, 2001 Audi S4, 2001 Audi A6, and 2001 Audi A4. However, it is still accessible from the selected car via links, so may be relevant.
Ensure battery voltage is at least 12 volts. Disconnect terminal D+ (Blue wire) from generator. Connect digital ammeter between terminal D+ (Blue wire) of generator and Blue wire. Set digital ammeter to 200-mA range. Turn ignition on. If amperage is not 150-185 mA (milliamps), check Blue wire between generator and instrument panel 32-pin harness connector "A" for an open or short to ground. If Blue wire is okay, check instrument cluster printed circuit.