2003 Pontiac Aztek 6 cyl All Wheel Drive Automatic 72k miles
My auto level (rear air bags) stopped working. I knew the compressor was on its way out. I bought a replacement compressor ( after it stopped working) and hooked everything back up. I can't get it to work. All of the fuses are ok. The relay works (used a jumper wire to test and compressor kicks on / can hear the relay click when tested. Even when pressing the aux. Switch in the back compartment nothing happens (light turns on. Just not air pump). There is power to the compressor unit / relay. If the rear sensor goes out will it shut down the whole system?
If the height sensor goes out it will not turn the pump on. Inspect the connector at the sensor, clean it out if it needs it, with brakkleen, and put a dab of dielectric grease in it. Look for pushed out or bent pins, and check the wires. Some systems require a computer scan tool to command the system to fill.
May, 18, 2008 AT 7:57 AM
I haven't even touched the rear sensor yet. I see the plug has at least six (6) wires going in/out of it. Can I jump two of the wires to see if that will turn the air compressor on (If so, which ones)? To confirm it's the switch that's bad. Would a bad sensor prevent me from using the aux air outlet in the back too?
May, 18, 2008 AT 8:52 AM
Lets do this first, read the DTC's from the computer this way, then let us know what you get, and we can tell you what and how to check it!
May, 18, 2008 AT 12:19 PM
I did the above procedure. (Without key in ignition)
Here is the code I got (flashes): 2, 2, 3, 2, 3, 2, 3, 3, 3, 3, 3, 3, 3, 1
I read your email and turned key to on (engine off) and got this code: 1, 2, 2, 3, 2, 3, 2, 3, 3, 3, 3, 3, 3, 3
pretty much the same as above but the " 1" is at the begining vs. The end.
I hope this helps!
May, 20, 2008 AT 1:27 PM
May, 22, 2008 AT 5:42 PM
Do you have the wiring diagram. I replaced the sensor. Still nothing. When it does the self-test I can hear the something (relay I think) click a few times. It never clicked before. But the compressor never kicks on. I know there is power through the relay as I can jump it and the compressor will run. I tested the relay and it works too. Maybe a bad ground?
May, 23, 2008 AT 2:01 PM
Did you use the deflator switch in the trunk to get the diagnostic flash codes? You may have inadvertently dissabled the system? The switch provides the ground to the relay...test that switch.
I know this was in the PDF I sent...
May, 26, 2008 AT 7:45 AM
Yes, I used the switch in the back. If I disabled it. How do I get it to work again? As far as I can tell everything else is in proper working order.
May, 26, 2008 AT 7:51 AM
From what I read on it, once the problem is fixed, cycling the ignition on to toff clears the codes and resets the system, if it's still not working run the diagnostic again.