Jeep Grand Cherokee (WK2) подвеска не поднимает авто!!! Как лечить?

Jeep Grand Cherokee (WK2)
Инструкция из технической документации:
NOTE:
The gauge on Air Suspension Refill Tool - Tool, Air Suspension Refill 10247B reads the tank pressure. The regulator limits the pressure in the line to 12 bar (175 psi). When connected to the reservoir with the valves open, pressure in the reservoir can be read on the scan tool.
1. Raise and support the vehicle so the suspension system is hanging (four wheels off the ground)
2. Make sure the Air Suspension Refill Tool - Tool, Air Suspension Refill 10247B line on/off valve (6) is turned off and the nitrogen tank valve is turned off.
NOTE:
With the air suspension reservoir behind the back seat, the fill fitting will always be on the drivers side of the vehicle.
3. Tilt the rear seat forward, and lift the cargo floor beauty panel (removed for clarity) to expose the reservoir.
4. Loosen the reservoir mounting straps enough to move the reservoir over towards the passenger side so that the fill tool fitting can be installed.
5. Remove the reservoir fill connection cap (not shown).
6. With Air Suspension Refill Tool - Tool, Air Suspension Refill 10247B attached to a nitrogen tank, connect the quick coupler to the air suspension reservoir fill connection and open the valve by turning clockwise.
7.
NOTE:
The regulator on Air Suspension Refill Tool - Tool, Air Suspension Refill 10247B is preset to 12 bar (175 psi) (as read with a scan tool, the gauge reads tank pressure only). When connected to the reservoir and the valves open, the pressure will equalize to 12 bar (175 psi) in approximately 10-15 seconds. A hissing sound can be heard while the nitrogen is being transferred and the sound will stop when the pressures are equalized.
Fill the reservoir to approximately 12 bar (175 psi) by fully opening the valve on the nitrogen tank and the valve on Air Suspension Refill Tool - Tool, Air Suspension Refill 10247B
8. When the pressures are equalized, close the valve on the tool.
9. With a scan tool, using the routines under the Air Suspension Control Module (ASCM), perform a Short Fill on one rear air spring, verify that the air spring is seated properly, then perform a Complete Fill on that spring.
10. Repeat step 8 on the opposite rear air spring.
11. Fill the reservoir again by repeating steps 6 and 7.
12. With a scan tool, using the routines under the Air Suspension Control Module (ASCM), perform a Complete Fill on each front spring and shock assembly.
13. Verify the Air Suspension Refill Tool - Tool, Air Suspension Refill 10247B line on/off valve (6) is closed and close and the nitrogen tank valve.
14. Remove the supports and lower the vehicle.
15. Close the valve (1) by turning counter clockwise, remove the quick coupler (2) from the air suspension reservoir fill connection (3) and install the reservoir fill connection cap (not shown).
16. Install the air system reservoir.
17. With a scan tool, using the routines under the Air Suspension Control Module (ASCM), perform the following:
Command the vehicle to Normal Ride Height.
Run the Air Mass Calculation routine on the air suspension system.
If necessary, add to the system or deflate to atmosphere using the ASCM routines, then repeat the Air Mass Calculation routine again until system responds with Air Mass OK (188 - 216 bar-liters)
18. Perform the ASCM Verification Test.