K5 Automatic Level Control Module: Scan Tool Information

The K5 Automatic Level Control Module scan tool data parameters list contains all automatic level control related parameters that are available on the scan tool. The list is arranged in alphabetical order. A given parameter may appear in any one of the data lists.

Automatic Level Control Module Scan Tool Data Parameters

Parameter	System State	Expected Value	Description (Range)
Operating Conditions: Ignition ON
Air Suspension Reservoir Pressure	Normal Ride Height	18 bar	The scan tool displays the Air Suspension Reservoir Pressure (2 - 20 bar).
Left Front Air Spring Pressure	Normal Ride Height	6.6 - 8.6 bar	The scan tool displays the pressure inside the Left Front Air Spring (2 - 11 bar).
Left Front Position Offset From Trim	Normal Ride Height	0 mm	The scan tool displays amount offset from Normal Ride Height of the left front position sensor (-25 - 50 mm).
Left Front Suspension Position Sensor Trim Height	Normal Ride Height	53%	The scan tool displays the Left Front Position Sensor Duty Cycle (0 - 100%)
Left Rear Air Spring Pressure	Normal Ride Height	5.2 - 6 bar	The scan tool displays the pressure inside the Left Rear Air Spring (2 - 11 bar).
Left Rear Position Offset From Trim	Normal Ride Height	0 mm	The scan tool displays amount offset from Normal Ride Height of the left rear position sensor (-25 - 50 mm).
Left Rear Suspension Position Sensor Trim Height	Normal Ride Height	51%	The scan tool displays the Left Rear Position Sensor Duty Cycle (0 - 100%)
Right Front Air Spring Pressure	Normal Ride Height	6.6 - 8.6 bar	The scan tool displays the pressure inside the Right Front Air Spring (2 - 11 bar).
Right Front Position Offset From Trim	Normal Ride Height	0 mm	The scan tool displays amount offset from Normal Ride Height of the right front position sensor (-25 - 50 mm).
Right Front Suspension Position Sensor Trim Height	Normal Ride Height	53%	The scan tool displays the Right Front Position Sensor Duty Cycle (0 - 100%)
Right Rear Air Spring Pressure	Normal Ride Height	5.2 - 6 bar	The scan tool displays the pressure inside the Right Rear Air Spring (2 - 11 bar).
Right Rear Position Offset From Trim	Normal Ride Height	0 mm	The scan tool displays amount offset from Normal Ride Height of the right rear position sensor (-25 - 50 mm).
Right Rear Suspension Position Sensor Trim Height	Normal Ride Height	51%	The scan tool displays the Right Rear Position Sensor Duty Cycle (0 - 100%)
Vehicle Level Control Compressor Temperature	-	Varies	The scan tool displays the current temperature of the Automatic Level Control Compressor (-40 - 125°C).

Automatic Level Control Module Scan Tool Output Controls

Output Control	Description
Air Spring Deflation	Short Term Deflate - Opens the selected valve for up to a 2 second to allow visible movement. This verifies that the spring can properly deflate. Complete Deflate - When vehicle is raised off the ground or an individual corner is jacked/raised up, opens the valve until selected air spring is approximately 2 Bar. Used to deflate the selected air spring for replacement or testing.
Deflate Air Suspension Reservoir	Opens selected valve until pressure is low enough for Reservoir Removal
Equalize All Air Spring Pressures	Equalizes spring pressures on the selected axle. Function runs for up to 12 seconds. Used to equalize pressures across axle after component replacement.
Short Term Inflate	Opens the selected valve for up to 2 seconds, allowing selected corner to inflate and see that air moves into air spring. Used for testing air spring inflation and inflating air spring after repair or replacement.
Pneumatic Connection Pressure Test	Tests the pneumatic connection from the Pneumatic Control Unit to the Air Compressor. Used any time the airline is opened or replaced to verify there are no leaks.
Test Compressor Pneumatic Operation	Commands the Air Suspension Leveling Compressor to On for a up to 20 seconds. Used to verify the compressor motor/pump/exhaust valve mechanical, electrical, and pneumatic operation.

Automatic Level Control Module Scan Tool Configuration/Reset Functions

Configuration/Reset Function	Description
Air Spring Deflation	Opens the selected valve for up to a 2 second to allow visible movement. Used to deflate the selected air spring for replacement or testing.
Level Vehicle to Target Height	Commands the vehicle to the Normal Ride Height. Used to return vehicle to Normal Ride Height after performing tests or repairs.
Trim Height Settings	Allows vehicle trim height to be set. Used after ECU reflash or component replacement.