Skoda Workshop Service and Repair Manuals > Octavia Mk1 > Power transmission | Manual gearbox 02C | Self diagnosis, V.A.G Inspection Service

Electrical Test

Special tools and workshop equipment required

t	Handheld multimeter (e.g. -V.A.G 1526 A-)

t	Measuring tool set -V.A.G 1594 A-

t	Vehicle system tester -V.A.G 1552 - with cable -V.A.G 1551/3-

The test steps → Anchor apply for

–	Vehicles (up to 9.99), for which the function of the Haldex coupling is not at all or only partly included. In this case the full electric inspection must be carried out.

–	Vehicles (as of 10.99), for which the final control diagnosis does not indicate the fault source. In this case the full electric inspection must be carried out.

–	Vehicles (as of 10.99), for which the final control diagnosis does give a direct indication of the fault source. Then only perform the recommended test steps (targeted approach).

Test requirements

l	Oil level of Haldex coupling O.K, check → Chapter.

l	All fuses according to current flow diagram O.K (to check remove fuses from the fuse holder).

l	Supply voltage O.K. (min. 11.0 V)

l	Brake light O.K.

Overview of test steps

component to be tested

Voltage supply to the four-wheel drive control unit -J492-

–	Perform test step 1 → Anchor.

Function of the brake light switch -F-

–	Perform test step 2 → Anchor.

Function of the handbrake warning switch -F9-

–	Perform test step 3 → Anchor.

Test of the data BUS cables

–	Perform test step 4 → Anchor.

Function of the pump motor of the Haldex coupling -V181- and function of the oil pressure control motor -V184-

–	Perform test step 5 → Anchor.

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