Test requirements: Notes

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2003 Audi S8, 2003 Audi A8, 2002 Audi S8, 2002 Audi A8, and 2001 Audi A8. However, it is still accessible from the selected car via links, so may be relevant.

Fuses for engine electronics OK
Fuel pump relay OK

Connect vehicle diagnostic, testing and information system VAS 5051 or VAG1551 scan tool and select engine electronics control module by entering address word "01". See VEHICLE DIAGNOSTIC, TESTING AND INFORMATION SYSTEM VAS5051 OR VAG1551, CONNECTING AND SELECTING FUNCTIONS . When doing this the ignition must be switched ON.
Indicated on display

Fig 1: VAG1551 Scan Tool Display - Output Diagnostic Test Mode: Engine Codes AUX, AKB (1 Of 2)
Courtesy of AUDI OF AMERICA, INC.
Press buttons -0- and -3- to select function "Output Diagnostic Test Mode."
Indicated on display

Fig 2: VAG1551 Scan Tool Display - Output Diagnostic Test Mode: Engine Codes AUX, AKB (2 Of 2)
Courtesy of AUDI OF AMERICA, INC.
Confirm input with -Q- button.