Transfer Case: Testing and Inspection

Haldex coupling, checking function
- Drive vehicle front wheels onto rolling road.

WARNING!: Ensure area in front of vehicle is kept free. Carry out test with care to avoid damage.

- Engage 1st gear and slowly start driving.
- If the vehicle is not pushed off the rolling road at an engine speed of 1500 rpm, then the Haldex coupling is not OK.

Notes:
^ When driving the front wheels while the rear wheels are stationary the Haldex coupling will lock - up. This means that the rear wheels are then driven.
^ The Haldex coupling will accept differing speeds for a short period without locking up, when 1st gear is engaged and engine speed is slightly above idling speed.