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Ignition system, glow plug system > < Coding engine control unit

Passat (B3)

Diesel direct injection and glow plug system
Replacing, coding and matching engine control unit
Matching engine electronic control unit to electronic immobilizer

Special tools, testers and auxiliary items

  • ◆ Fault reader V.A.G 1551 or vehicle system tester V.A.G 1552 with cable V.A.G 1551/3

Test conditions
 
N29-0002
  • ● Authorized vehicle key required

Work sequence

  • ‒ → Unclip cover for diagnostic connections.
  • ‒ Connect fault reader with cable V.A.G 1551/3.
  • ‒ Switch on ignition.
  • ‒ Operate fault reader taking into account the information on the display:
  • ‒ Input 1 for "Rapid data transfer".
  • ‒ Input 25 for address word "Immobilizer" and confirm with Q.
  • ‒ Press ⇒ key.
 
→ Indicated on display:
Rapid data transfer     HELP
Select function XX
  • ‒ Press keys 0, 1 and 0 for "Display group number 10" and confirm entry with Q key.
 
→ Indicated on display:
Adaption
Feed in channel number XX
  • ‒ Input 00 for channel number 0 and confirm with Q.
 
→ Indicated on display:
Adaption     Q
Erase learnt values?
  • ‒ Confirm entry by pressing Qkey.
 
→ Indicated on display:
Adaption     ⇒
Learnt values have been erased
  • ‒ Conclude adaption by pressing ⇒ key.
  • ‒ Input 06 for "End output" and confirm with Q.
  • ‒ Switch off ignition

Note:

The identity of the engine control unit is read into the immobilizer control unit when next switching the ignition on.

Ignition system, glow plug system > < Coding engine control unit