Final Drive 02D And 0AV, Function Test For Opened HALDEX Clutch, S-TRONIC Transmission
Test Prerequisites
- Haldex clutch fluid level OK
- Check fluid level in Haldex clutch, refer to OIL LEVEL IN THE HALDEX CLUTCH, CHECKING .
- Correct Engine Control Module (ECM) and ABS control module installed (check coding and control module identification number).
-- Place vehicle on lift.
CAUTION:
For safety reasons, vehicle must be placed on lift so that wheels do not have any contact with floor.
Be careful when testing to prevent damage.
-- Start the engine.
-- Engage D gear and depress gas pedal slightly.
All 4 Wheels Must Turn.
-- Set the parking brake.
Rear Wheels Must Come to a Standstill While Front Wheels Continue to Turn.
- Do not turn rear wheels:
Haldex clutch is open, function is OK.
- Turn the rear wheels:
The Haldex clutch is closed. Possible cause of malfunction:
- Main pressure regulating valve may be sticking
- Mechanical Haldex clutch malfunction
- All Wheel Drive (AWD) control module -J492- at rear final drive faulty
- Parking brake indicator lamp switch -F9- faulty