New rear air compressor not working

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Cthomas

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I have a 2007 delanli that I replaced with a new rear air compressor. It isn't turning on. I checked all the fuses and relay and all seem fine. I am at a loose. It has power to the compressor and I also made sure the new compressor works. It's doesn't seem to be getting signal to turn on , not sure where to go from here.
 

Joseph Garcia

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Do you have or have access to a quality bi-directional scanner. With a scanner, you can perform tests on the active suspension system, which includes the compressor, and this will steer you to the root cause of your issue. If I were to guess, your suspension control module has failed, but don't simply shoot the parts cannon at the issue.
 
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Cthomas

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I only have the plug in OBD 2 top don. It just shows me volts and percentages for the actuators. It doesn't give me the option to check the suspension control module. I can check the compressor but it don't come back with anything. I drove it down the road and the actuators seem to be working because the volts and percentages change when driving. Just surprised me that I do not have any codes or error messages.
 

Joseph Garcia

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I only have the plug in OBD 2 top don. It just shows me volts and percentages for the actuators. It doesn't give me the option to check the suspension control module. I can check the compressor but it don't come back with anything. I drove it down the road and the actuators seem to be working because the volts and percentages change when driving. Just surprised me that I do not have any codes or error messages.
So, it sounds like your scanner cannot actually test the compressor to turn it on and off? Or test the purge valve circuit that activates the compressor every time that you start the truck?
 

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