Lincoln Repair Questions? Ask a Mechanic for Answers ASAP
Welcome, I'm Chris (aka Moose) I'm an independent contractor here at Just Answer.
You most likely have a leak allowing the compressed air to escape prior to getting to the air bags, or the module is reading the height sensor wrong or commanding the solenoids wrong. Do you have a scan tool to check the module?
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We can check the powers and grounds to the module if you have a volt meter, but with the module telling the compressor to turn on. I feel those will be fine and so is that section of the module. Air leaks must be found with soapy water, you will not be able to hear them, there is not enough pressure.