Available functions
WARNING: This page does not describe the selected car, but rather 13 other vehicles, including the 2005 Audi allroad, 2004 Audi allroad, 2004 Audi A6, 2003 Audi allroad, and 2003 Audi A6. However, it is still accessible from the selected car via links, so may be relevant.
The prerequisites for selecting the desired functions can be taken from the following table.
AVAILABLE FUNCTIONS DESCRIPTION CHART
| Address words and functions on VAG1551 scan tool | Ignition ON, engine not running | Engine idling | Vehicle being driven | |
|---|---|---|---|---|
| Address words | ||||
| 00 | Automatic Test Sequence | yes | yes | yes |
| 01 | Engine Electronics | yes | yes | yes |
| Functions | ||||
| 01 | Check Control Module Version | yes | yes | yes |
| 02 | Check DTC Memory | yes | yes | yes |
| 03 | Output Diagnostic Test Mode (DTM) | yes | no | no |
| 04 | Basic setting | yes | yes | yes |
| 05 | Erase DTC Memory | yes | yes | yes |
| 06 | End Output | yes | yes | yes |
| 07 | Code Control Module | no | no | no |
| 08 | Read Measuring Value Block | yes | yes | yes |
MODE UNDER ADDRESS WORD 33 DESCRIPTION
| Mode under Address word 33: | |
|---|---|
| Mode 1: Transmit diagnostic data | Switch ignition on or let engine run at idle |
| Mode 2: Transmit operating conditions | Switch ignition on or let engine run at idle |
| Mode 3: Check DTC Memory | Switch ignition on or let engine run at idle |
| Mode 4: Erase diagnostic data | Switch ignition on or let engine run at idle |
| Mode 5: Output of oxygen sensor signals | Switch ignition on or let engine run at idle |
| Mode 6: Transmit measured values | Switch ignition on or let engine run at idle |
| Mode 7: Check DTC Memory | Switch ignition on or let engine run at idle |
| Mode 8: Check tank leak test | Switch ignition on or let engine run at idle |
| Mode 9: Read out vehicle information | Let engine run at idle |
Mode 1 to 9 can be selected under address word 33 .
- Individual measured values can be read out under mode 1. Mode 1 is not recommended for authorized Audi service centers, since this data can be obtained much more accurately under address word/01 function 04 or function 08.
- Mode 2 displays operating conditions, for which malfunctions are recognized.
- With mode 3 the DTC memory will be checked and with mode 4 the DTC memory will be erased.
- Mode 5 displays the static dimensions of the oxygen sensors, which are legally required. Since these dimensions are not directly relevant to oxygen sensor diagnostics, mode 5 is insignificant for the authorized Audi center.
- With mode 6 all measured values can be checked from components and systems that are not constantly monitored.
- Using mode 7, DTCs can be checked for which the Malfunction Indicator Light (MIL) is not yet lit (MIL is not on, no DTCs under mode 3).
- Under mode 8 the tank leak test will be checked.
- With mode 9 the following vehicle information can be read out: Vehicle Identification Number (VIN), Part number and program/data level of the engine control module and the check sum (this value is a internal calculated value).