Good day, I have a Range Rover Sport 2006 Diesel. The suspension is down, and I have replaced a good compressor, but I'm still getting the same result. I ran a scan on the RLM (Ride Level Control Module), but it's not bringing up any fault codes. The compressor runs until the reservoir is filled up, but the front and rear suspension is not coming up. I checked the air valve block with a multimeter, and when the ignition is turned on, there is 12V on all terminals of the connector, which appears to be normal because I also checked on a similar Range Rover. However, the computer (air suspension module) is not sending the ground signal to open the valve, so air cannot enter the strut. Please help with this.