Audi Workshop Service and Repair Manuals > A4 Mk1 > Power unit | TDI injection and glow plug system (6-cyl.) | Fuel preparation system Diesel injection | Check signals from and to dash panel insert

Checking fuel consumption signal

This signal is required for the fuel consumption indicator in the dash panel insert.

If the dash panel insert shows an incorrect fuel consumption rate:

–	Adjust the fuel consumption indicator so that it shows the actual fuel consumption rate → Electrical system; Rep. Gr.01..

If the dash panel insert does not show any fuel consumption rate:

–	Connect test adapter -V.A.G 1598/30- to wiring harness for engine control unit → Chapter.

Check the following wiring connections for open circuits and short to positive or earth.

Test adapter -V.A.G 1598/30-, socket	Dash panel insert, contact
4/18	→ Current flow diagrams, Electrical fault finding and Fitting locations

–	Rectify open circuit or short circuit in wiring as necessary → Current flow diagrams, Electrical fault finding and Fitting locations.

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