Transmission: Electrical Checks

Transmission: Electrical Checks

Special tools, testers and auxiliary items







- Hand multimeter VAG 1526A
- Adapter set V.A.G 1594 A
- Test box V.A.G 1598/18

Test requirements:
- Battery voltage in order.
- Fuses 14 and 21 in order.
- Ground connections in order:

The Ground connection point is located on the left next to the relay plate.

Check battery Ground strap and Ground strap between battery and transmission.

Electrical Check

Vehicles from 01.96
The automatic transmission control module -J217- is located in left footwell on A-pillar.







- Switch ignition off, release multi-pin connector in direction of arrow, and pull off control module.







- Fit test box V.A.G 1598/18 onto multi-pin connector (1) and lock, in direction of arrow (2).

Using test box V.A.G 1598/18 the wiring can be checked according to wiring diagram.

- Before connecting the test leads the correct measuring range on tester must be adjusted. Otherwise the electronic components can be destroyed
- Use the hand multimeter V.A.G 1526 with auxiliary cables from V.A.G 1594 A for testing.
- The specified values are valid for an ambient temperature from 0 °C to 40 °C.
- If the readings obtained differ from the specified values, determine malfunction on the basis of the wiring diagram.
- If the readings obtained differ only slightly from the specified values, clean sockets and connectors of the testers and test leads and repeat test. Before replacing the particular components, test wiring and connections and, particularly if specified values are below 10 Ohms, repeat resistance measurement on component.

After electrical checks

Vehicles from 01.96







- Fit multi-pin connector on control module -J217- and lock.

When fitting ensure that the guides (arrow) are engaged on control module pins.