Land Rover Discovery: Progress control system
PROGRESS CONTROL SYSTEM
OVERVIEW
The Progress control system can help the
driver to manoeuvre on slippery surfaces.
The system operates in either a forward
or a reverse direction at low speeds, for
example, pulling away from standstill,
ascending or descending an incline, and
driving on unstable/slippery driving
surfaces such as: ice, snow, grass, gravel,
sand, mud, etc.
Note: This feature is also known as All
Surface Progress Control (ASPC) or All
Terrain Progress Control (ATPC).
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The Progress control button is
located on the centre console.
Note: The driver's seat belt must be
buckled and all of the doors must be
completely closed to enable the feature.
Press and release the b
When the Progress control system is
enabled, the desired target (set) speed for
the vehicle can be set and adjusted via
the Cruise control buttons, mounted on
the right side of the steering wheel
SE
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PRINCIPLES OF OPERATION
For a detailed description of the Information and Message Center, refer to
the relevant Description and Operation section in the workshop manual.
REFER to: Information and Message Center (413-08 Information and
Message Center, Description and Operation).
INSPECTION AND VERIF
The valve block is located in a vertical position at the front of the
transmission main casing, behind a sealed cover. The valve block contains a
number of solenoids and spool valves to control the transmission operation.
The solenoids are controlled by the TCM to provide gear changes and
smooth t