Volkswagen-Audi Vehicle Communication Software Manual [888kb ...

Expert Mode
Using Expert Mode
07-ECU Coding
This function can change the existing control module coding by entering a new coding. The range
of coding can be 0–127, 0–32767 or 0–1048575. The coding number can tell a control module
about the configuration, for example, if cruise control is available or not.
After entering a new coding, it is sent to the control module and the scan tool reports if the new
coding is accepted or not. A coding will not be accepted if it is an unknown number or if a control
module cannot be coded. However, be aware that a control module usually does accept an
incorrect coding number.
Some special codings require an unlocked control module. The control module can be unlocked
with a Log-in or Security Access request.
Note the following regarding control module coding:
• The following login information is subject to change and is not guaranteed to work on every
application. A common VW login is 01283; a common Audi login is 13861. Specific vehicle
logins are found in that vehicle’s service manual.
• 2002 vehicles using the new CAN Bus communication network may not require control
modules to be version coded, as the version coding information is obtained from the other
controllers sharing the CAN Bus. However, if the engine control module is replaced it will need
to be adapted to the immobilizer (see “Testing Immobilizer Systems” on page 75).
08-Read Measuring Value Block
This function displays measuring value blocks. After entering a valid block number, data values or
text are displayed. There is no description of the data value, only the value and unit is displayed.
For interpretation of the values, refer to the VAG system specific workshop manual. Press N to
enter the print exit menu. Scroll to change the block number. The displayed data is the actual data
received from the control module.
VW/Audi Display Group Data
Instead of one long data list, VW and Audi data is organized into display groups (Table 4-1).
However, these groups are not determined by a scan tool. Instead, these are manufacturer
predetermined groups which change depending on the vehicle and engine. Table 4-1 provides
some examples of group categories available on a late model VW and Audi.
Table 4-1 VW/Audi display group categories (part 1 of 2)
Display Group Number Display Group Category
1–9 General engine activity data
10–19 Ignition
20–29 Knock control
30–39 O2 sensor control system
40–49 Three-way CAT
50–59 Engine speed control
60–69 Throttle drive
70–79 Emissions reduction
80–89 Special function
90–97 Power increase
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