Differential Electronic Module (DEM)

Differential Electronic Module (DEM)





Special Tool(s)





Material

Removal

NOTE: If installing new components, there is no reason to remove the seals from the old components.

NOTE: The differential electronic module (DEM) and solenoid valve are calibrated together and must be installed as a set. If installing a new DEM or solenoid valve, install them as a set only.

1. With the vehicle in NEUTRAL, position it on a hoist.





2. Disconnect the DEM by pushing the connector tab through the slot while pulling the connector out.





3. Remove the 2 DEM bolts, then remove the DEM, including the solenoid valve and the oil temperature sensor.





4. Using channel locks, carefully remove the solenoid valve.
5. Remove the oil temperature sensor from the active on-demand coupling if it did not come out when the DEM was removed.

Installation





1. NOTE: If installing a new DEM, install a new solenoid valve.

NOTE: Coat the new oil temperature sensor seal with Volvo transmission oil.

NOTE: Install the concave side of the washer facing downward.

Assemble the DEM as shown.





2. Install the DEM upper bolt and the DEM in the active on-demand coupling cover. Then install the DEM lower bolt.
^ Tighten to 6 Nm (53 inch lbs.).





3. Connect the DEM electrical connectors.
4. Flash the DEM with the current software, if a new DEM is installed.