Before expecting it to work, test the valve block. With a short length of 6mm nylon pipe, one of the emergency inflation Schrader valves and a tyre pump, you can check each of the 4 outputs to make sure they are sealing. Pressurise each one in turn and make sure it holds pressure, then open the corresponding solenoid which will check that the valve is opening, the valves will open and release the pressure. This also checks that the driver pack is good.
Use the connector from the ECU to the driver pack, not the one between the driver pack and the valve block, as an initial test for the valve block and driver pack.
Connect 12V to pins 12 and 13 (using a standard 6.3 mm spade terminal you can connect to both pins at once) and ground to pins 10 and 11. Then apply 12v to pins 1, 2, 3, 4, 5, 6, and 8. When you put power to any of them, you should hear the relevant solenoid click and pressure will be released. If the solenoid doesn't click when you put power onto a pin, then you need to check the connection between the driver pack and the valve block. Check for weak tension in the connector.