audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

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Electrical system Self-diagnosis
Immobilizer self-diagnosis - immobilizer I (fixed code)
Reading measured value block
 
A01-0122

Sequence of operations

  • ‒ Start immobilizer self-diagnosis .

→ Display on VAS 5051:

  • ‒ From list -1- select diagnosis function "08 - Reading measured value block".

 
A01-0130

→ Display on VAS 5051:

  •     1 -    Enter display group
  • ‒ Use keypad -2- to enter required three-digit display group number
    =>List of display groups, Page 01-255 and confirm entry by touching Q key.
 
A01-0185

→ Display on VAS 5051:

  •     1 -    Reading measured value block
  •     2 -    Display zone 1
    • Display zone 2
    • Display zone 3
    • Display zone 4
  •     3 -    Display group X

Notes:

  • ◆ Display remains blank if a display zone is not used.
  • ◆ Proceed as follows to switch to a different display group:

Display group

VAS 5051

Up

Press s key

Down

Press t key

  • ‒ Terminate function "08 - Reading measured value block" by touching◂key.

List of display groups

Display group number

Indicated on display

020

1 = 1st and 2nd ident no. position
2 = 3rd and 4th ident no. position
3 = 5th and 6th ident no. position
4 = 7th and 8th ident no. position

021

9 = 9th and 10th ident no. position
2 = 11th and 12th ident no. position
3 = 13th and 14th ident no. position
4 = Not used

022

1 = Starting authorised
2 = Engine control unit response
3 = Key status OK
4 = Not used

Measured value block 020

Display group 20

◂ Indicated on display

AU

Z7

Z0

T0

◂ Display zones 1 ... 4

7th and 8th ident no. position

5th and 6th ident no. position

3rd and 4th ident no. position

1st and 2nd ident no. position

Measured value block 021

Display group 21

◂ Indicated on display

03

38

77

-

◂ Display zones 1 ... 4

13th and 14th ident no. position

11th and 12th ident no. position

9th and 10th ident no. position

Measured value block 022

Display group 22

◂ Indicated on display

X

X

X

Key status OK
▪ 1 = Yes
▪ 0 = No, i.e. vehicle key not/incorrectly matched or transponder defective

Engine control unit response 1)
▪ 1 = Yes
▪ 0 = No, i.e. fault in engine control unit or wiring

Starting authorised
▪ 1 = Yes
▪ 0 = No, i.e. vehicle key not/incorrectly matched or engine control unit incorrectly encoded/defective

1)    Depending on engine control unit, measured value block is set for 10 ... 30 s after switching off engine and ignition to "0 = Engine control unit response no", i.e. engine control unit released and no fault present. Start self-diagnosis again as a check => Page 01-241.

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