Volkswagen Workshop Service and Repair Manuals

Special tools, testers and auxiliary items

• ◆ Fault reader V.A.G 1551 (or vehicle system tester V.A.G 1552) with
       ▸ 07.93: Cable V.A.G 1551/1
       08.93 ▸: Cable V.A.G 1551/3
• ◆ Test box V.A.G 1598/18
• ◆ Hand multimeter V.A.G 1526 or multimeter V.A.G 1715
• ◆ Adapter set V.A.G 1594
• ◆ Current flow diagram

Test conditions

• ● No faults stored in fault memory
  , interrogating fault memory

Work sequence

• ‒ Connect fault reader V.A.G 1551 (V.A.G 1552) and select engine electronics control unit (address word 01); select with ignition switched on and confirm with Q key => Page 01-4

Vehicles ▸ 05.97

• ◆ Coding 01 =Manual gearbox
• ◆ Coding 02 =Automatic gearbox

Vehicles 06.97 ▸

• ◆ Coding 11 =Manual gearbox
• ◆ Coding 12 =Automatic gearbox

Continued for all vehicles

If the display does not indicate as described:

• ‒ Switch off ignition

• ‒ → Connect test box V.A.G 1598/18 to control unit wiring loom.
• ‒ Switch on ignition.
• ‒ Check voltage with multimeter and aux. cables from V.A.G 1594 between test box sockets 1 (-) and 40.
       Specification:
       Vehicles with automatic gearbox: min. 11 V
       Vehicles with manual gearbox: 0 V

• ‒ Check voltage with multimeter and aux. cables from V.A.G 1594 between test box sockets 23 (terminal 15) and 32 (-).
       Specification:
       Vehicles ▸05.97: 0 V
       Vehicles 06.97 ▸: min. 11 V

Note:

The earth cable is only connected to contact 32 on vehicles 06.97 ▸.

If the specification is not obtained:

• ‒ Check wiring according to current flow diagram.