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Final drive"02D/0AV" – Checking function of closed Haldex coupling on vehicles with manual gearbox > < Checking function of Haldex coupling (generation "Haldex II"), rear final drive "02D/0AV"

A3 Mk2

Final drive„02D/0AV“ – Checking function of open Haldex coupling on vehicles with manual gearbox
Final drive„02D/0AV“ – Checking function of open Haldex coupling on vehicles with manual gearbox
Test requirements:
t  Oil level of Haldex coupling OK
t  Checking oil level in Haldex coupling → Chapter.
t  Correct engine control unit and ABS control unit installed (check coding and control unit identification number).
–  Place vehicle on lifting platform.
  Caution
For safety reasons it is essential that the wheels do not touch the ground when the vehicle is on the lifting platform.
Carry out test with care to avoid damage.
–  Press clutch pedal.
–  Start engine.
–  Depress clutch pedal all the way, select 1st gear and release clutch carefully.
All four wheels must turn.
–  Apply handbrake.
The rear wheels must stop turning and the front wheels must continue to turn.
l  If the rear wheels do not turn:
The Haldex coupling is open; function is OK.
l  If the rear wheels turn:
The Haldex coupling is closed. Possible cause of fault:
t  Main pressure regulating valve sticking
t  Mechanical fault in Haldex coupling
t  Four-wheel drive control unit -J492- at rear final drive defective
t  Handbrake warning switch -F9- defective
   

Final drive"02D/0AV" – Checking function of closed Haldex coupling on vehicles with manual gearbox > < Checking function of Haldex coupling (generation "Haldex II"), rear final drive "02D/0AV"