Test requirements for operations with engine running

WARNING: This page is about a different car, the 2004 Audi A6, 2003 Audi A6, 2002 Audi A6, 2001 Audi A6, and 2000 Audi A6. However, it is still accessible from the selected car via links, so may be relevant.

No DTCs stored in DTC memory
Coolant temperature at least 85 °C (185 °F)
Electrical consumers switched off (radiator fan must not run during test)
A/C switched off
Gear selector lever in P or N position
Wheels in straight-ahead position

Connect Vehicle Diagnostic, Testing and Information System VAS 5051 or VAG 1551 Scan Tool and select engine electronics control module by entering address word "01". See VEHICLE DIAGNOSTIC, TESTING AND INFORMATION SYSTEM VAS 5051 OR VAG 1551 SCAN TOOL, CONNECTING AND SELECTING FUNCTIONS . When doing this the engine must be idling.
Check and erase DTC memory. See DIAGNOSTIC TROUBLE CODE (DTC) MEMORY, CHECKING AND ERASING . There should be no malfunctions stored in the DTC memory. (If necessary correct malfunctions, erase DTC memory and switch off engine. Start engine again, road test the vehicle and check DTC memory again to check.)
Leave engine idling.

Indicated on display

Fig 1: VAG 1551 Scan Tool Display - Basic Setting (1 Of 6)

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Press buttons -0- and -4- to select function "Basic Setting" and confirm entry by pressing -Q- button.

Indicated on display

Fig 2: VAG 1551 Scan Tool Display - Basic Setting (2 Of 6)

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Courtesy of AUDI OF AMERICA, INC.

Select required display group number from the Display Group Overview in "Read Measuring Value Block" section.

NOTE: Display Group 000 is used here as an example to illustrate the procedure.

Press buttons -0- three times.

(000 is to select Display Group 000)

NOTE: When the display group is selected the EVAP canister valve is closed and the A/C compressor is switched off.

Indicated on display

Fig 3: VAG 1551 Scan Tool Display - Basic Setting (3 Of 6)

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Courtesy of AUDI OF AMERICA, INC.

Confirm entry by pressing -Q- button.

Indicated on display

Fig 4: VAG 1551 Scan Tool Display - Basic Setting (4 Of 6)

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Fig 5: Display Group 000 (Decimal Readouts)

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Allow engine to idle for a few minutes; coolant temperature at least 85 °C (185 °F) (at least 180 in display fields 1).

NOTE:

When the PRINT button is pressed the current display will be printed out.
Press C before selecting further display groups.

If readouts in all display fields match specifications, Press --> button.

Indicated on display

Fig 6: VAG 1551 Scan Tool Display - Basic Setting (5 Of 6)

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Courtesy of AUDI OF AMERICA, INC.

Press buttons -0- and -6- to select function "End Output" and confirm entry with -Q- button.

Indicated on display

Fig 7: VAG 1551 Scan Tool Display - Basic Setting (6 Of 6)

G03614060

Courtesy of AUDI OF AMERICA, INC.