Volkswagen Workshop Service and Repair Manuals

Special tools, testers, measuring instruments and auxiliary items required

• ◆ Fault reader V.A.G 1551 with cable V.A.G 1551/3

Work sequence

• ‒ Connect fault reader V.A.G 1551 (V.A.G 1552) and select the engine electronics control unit with the "address word" 01
  ; Connecting fault reader and selecting engine electronics control unit.
• ‒ First print out the control unit identification and thereby the previous control unit coding as follows:

Removing engine control unit

• ‒ Remove the wiper arms and cowl panel:

=> Electrical system; Repair group 94; Windscreen wiper system; Removing and installing windscreen wiper system

• ‒ Release and pull off control unit connector.

• ‒ → Press the control unit in direction of arrow and pull it out of the securing frame.
• ‒ Insert the new control unit.
• ‒ Check the previous coding and the coding of the new control unit => Page 24-105 .
• ‒ Match engine control unit to throttle valve control part => Page 24-108
• ‒ Match engine control unit to the electronic immobilizer => Page 24-111