Volkswagen Workshop Service and Repair Manuals

Note:

The work sequence is dependent upon the programme level of the Digifant control unit. Programme level number , connecting fault reader V.A.G 1551 and selecting engine electronics control unit.

• ‒ Connect fault reader V.A.G 1551 and select engine electronics control unit (address word 01); selection is carried out with engine idling.
  => Page 01-3

• ‒ Input 08 for "Read measured value block" function and confirm with Q.

(From programme level number 1390 =>Seite 24-53 )

• ‒ Input 03 for display group 03 and confirm with Q.

Note:

If something different is indicated on the display:

=> Fault reader operating instructions

• ‒ Read off displayed figure in display zone 4.
       Specification: approx. battery voltage constant
• ‒ Press ⇒ key.
• ‒ Input 06 for "End output" and confirm with Q.

If the displayed figure fluctuates:

• ‒ Carry out electrical check, Test step 1
  => Page 01-18 , if necessary renew current supply relay (J176) with Ident. No. 30 (relay position 3).

• ‒ Input 02 for display group 02 and confirm with Q.

Note:

If something different is indicated on the display:

=> Fault reader operating instructions

• ‒ Read off displayed figure in display zone 3.
       Specification: approx. battery voltage constant
• ‒ Press ⇒ key.
• ‒ Input 06 for "End output" and confirm with Q.

If the displayed figure fluctuates:

• ‒ Carry out electrical check, Test step 1
  => Page 01-18 , if necessary renew current supply relay (J176) with Ident. No. 30 (relay position 3).