audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

ABOUT US
Coding table > < Performing basic setting of engine

A4 Mk1

Simos injection and ignition system (4-cylinder)
Self-diagnosis
Coding Simos control unit

If the appropriate code for the vehicle is not displayed or if the control unit has been renewed, the control unit must be coded as follows.

Note:

Always print out the control unit identification of the "old" control unit.

  • ‒ Connect fault reader V.A.G 1551 (V.A.G 1552) and select engine electronics control unit with the "Address word" 01. When doing this the ignition must be switched on.
    (Connecting fault reader and selecting engine electronics control unit .)
 
→ Indicated on display:
Rapid data transfer    HELP
Select function XX
  • ‒ Press keys 0 and 7 for the function "Code control unit" and confirm entry with Q key.
 
→ Indicated on display:
Code control unit    Q
Input code number xxxxx (0-32000)
  • ‒ Enter the correct code number for the vehicle and confirm by pressing Q.

Note:

See next page for a list of the possible coding variants that can be selected.

List of possible codings for "AHL" engine; see Page 01-63 for coding variants of "ARM" engine.

Coding

For vehicles with

04001

Manual gearbox

04031

Automatic gearbox
 
→ The display on fault reader V.A.G 1551 will show the control unit identification.
3B0907557A    1.6l R4/2V SIMOS HS D01 ⇒
Coding 00000    WSC XXXXX

Note:

If an unauthorised code number is entered:
 
→ Indicated on display:
Function is unknown or    ⇒
cannot be carried out at the moment
  • ‒ Repeat procedure, entering correct code number.
  • ‒ Press ⇒key.
 
→ Indicated on display:
Rapid data transfer    HELP
Select function XX
  • ‒ Press keys 0 and 6 for the function "End output" and confirm entry with the Q key.

Codings for vehicles with "ARM" engine

  • ‒ Connect fault reader V.A.G 1551 (V.A.G 1552) and select engine electronics control unit with the "Address word" 01. When doing this the ignition must be switched on.
    (Connecting fault reader and selecting engine electronics control unit.)
 
→ Indicated on display:
Rapid data transfer    HELP
Select function XX
  • ‒ Press keys 0 and 7 for the function "Code control unit" and confirm entry with Q key.
 
→ When this display appears:
Code control unit    Q
Input code number xxxxx (0-32000)
  • ‒ Enter the correct control unit coding according to the coding table.

The coding is made up as follows:

XX

Country / emission standard

X

Power train / additional functions

X

ESP (Electronic Stability Program)

X

Gearbox

Example of possible coding

04001

EU-II (emission standard), vehicle without ESP; vehicle with manual gearbox

Coding table > < Performing basic setting of engine