Test requirements

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.

Coolant temperature at least 85 °C (185 °F)
Electrical consumers switched off (radiator fan must not run during the check)
A/C switched off
Gear selector lever in P or N position
No malfunctions stored in DTC memory

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.

Indicated on display

Fig 1: VAG 1551 Scan Tool Display - Read Measuring Value Block (1 Of 3)

Courtesy of AUDI OF AMERICA, INC.

Press buttons -0- and -8- to select function "Read Measuring Value Block" and confirm entry with -Q- button.

Indicated on display

Fig 2: VAG 1551 Scan Tool Display - Read Measuring Value Block (2 Of 3)

Courtesy of AUDI OF AMERICA, INC.

Input relevant Display Group number (3 figures) and confirm entry by pressing -Q- button.

NOTE: The display group number required is indicated in the instructions for testing functions and components given in the relevant sections of this Repair Manual.

Indicated on display (example)

Fig 3: VAG 1551 Scan Tool Display - Read Measuring Value Block (3 Of 3)

Courtesy of AUDI OF AMERICA, INC.

NOTE: To change to another display group proceed as follows:

CHANGING DISPLAY GROUPS

Display Group	VAG 1551 Scan Tool
Higher	Press button -3-
Lower	Press button -1-
Skip	Press button -C-