volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

Checking air conditioner and air conditioner compressor signals > < Checking control unit voltage supply
1AV fuel injection and ignition system (2-valve)
Servicing injection system
Matching engine control unit to electronic immobilizer

Special tools, testers, measuring instruments and auxiliary items required

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

Test conditions

  • ● Authorized vehicle key required

Work sequence

 
N29-0013
  • ‒ → Fold driver's side stowage compartment down.
  • ‒ Connect fault reader V.A.G 1551 or vehicle system tester V.A.G 1552 with cable V.A.G 1551/3.
  • ‒ Switch on ignition.
  • ‒ Operate fault reader or vehicle system tester taking into account the information on the display:
  • ‒ Press key 1 for "Rapid data transfer".
  • ‒ Press keys 2 and 5 for address word "Immobilizer" and confirm entry with Q key.
  • ‒ After the immobilizer control unit has registered, press ⇒ key.
 
→ Indicated on display:
Rapid data transfer     HELP
Select function XX
  • ‒ Press keys 1 and 0 for function "Adaption" and confirm entry with Q key.
 
→ Indicated on display:
Adaption
Feed in channel number XX
  • ‒ Press key 0 twice for "Channel number 0" and confirm entry with Q key.
 
→ Indicated on display:
Adaption     Q
Erase learnt values?
  • ‒ Confirm input with Q key.
 
→ Indicated on display:
Adaption     ⇒
Learnt values have been erased
  • ‒ Conclude adaption by pressing ⇒ key.
  • ‒ Press keys 0 and 6 for the function "End output" and confirm entry with the Q key.
  • ‒ Switch off ignition

Note:

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

Checking air conditioner and air conditioner compressor signals > < Checking control unit voltage supply