Engine Mount: Description and Operation

Engine Mount Control

The controllable engine mounts are switched to "hard" or "soft" corresponding to operating conditions.

Function
The changeover valve connects the engine mounts to the vacuum supply. When activated by the DDE master control unit, the changeover valve switches vacuum to the engine mounts which in turn switch to "soft".

The engine mounts are activated as follows:
- From "soft" to "hard" when 1050 rpm is exceeded
- From "hard" to "soft" when 950 rpm is not reached

Troubleshooting
If a defect occurs in the activation of the changeover valve, a fault is stored.