might be that relay then, it's a little bigger than a standard relay so you may have to shop around to find one, auto parts store "might" have it
07 XL Denali
- Thread starter carrmann
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took a shot and changed out the relay with the one from autozone. compressor is still just temp connected at the harness, not fully installed. no air lines connected. it now powers on with the key for about 3-5 seconds, but does not turn on via the tech 2 scanner(exh valve responds, but nothing happens when commanding the compressor to turn on/off, no click etc). would nothing else being connected (air lines) cause this?? Or is something else wrong as well?
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ok.
can someone at least point me in the direction to find more info on this? Googling has found me little more than what I've done, and the forum hasn't brought up much either.
recap:
my compressor is just connected to the harness NOT the air lines. it turns on with key on/start for about 3-5 seconds then shuts off. it does not turn on again after though, even when commanded to by the tech 2. I have changed the relay, and have a new 40amp fuse installed. am I missing something else?
can someone at least point me in the direction to find more info on this? Googling has found me little more than what I've done, and the forum hasn't brought up much either.
recap:
my compressor is just connected to the harness NOT the air lines. it turns on with key on/start for about 3-5 seconds then shuts off. it does not turn on again after though, even when commanded to by the tech 2. I have changed the relay, and have a new 40amp fuse installed. am I missing something else?
the red wire is for either trailer hitch power or trailer brake controller power (i don't recal which) but it is one of those, the other red wire is on the side of the fuse box nearest the fender.
and yes that is the relay for the pump, so part of the problem solved.
not sure why it's not responding to the tech2 it shouldn't matter if anything is connected to it or not it has no way of knowing the difference other than air pressure that would be there if the shock air hose were hooked up.
you might read thru the fuse listings in the owners manual and see if any of them are for the suspension or air pump and check those, I know there is at least one because there is a trick people do by disconnecting the battery and pulling a fuse to make it not see the air pump anymore making part of the errors go away,
Yea, I'm pretty confused by that considering it turns on when a few seconds after I put the key in the ON position or start it.
Thank you for the response. I'll check to see if there's another fuse I'm missing. Or relay?
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That doesn't mean much though if you find that fuse is missing then disconnect the battery put the fuse back in and then reconnect the battery
I believe that is the self test function(powering on for a few seconds) . It wouldn't turn on at all before(relay replacement fixed it) . Figured I was making progress.
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I said FUSES, so check FUSE # 2, 54, 58 in the underhood box.
test each one with a meter, if they are all good, disconnect the battery ground for a couple minutes, reconnect then try the tech2 again.
yea I understood. They were the first thing I checked, I'll check again though as I did not know about #2. I was referring to the fact that before nothing happened, now the self test at least was happening so I thought I was making progress lol.
There is no fuse 58. I'm looking for other fuses, I will check 2 and 54. Thank you. Already replaced 61 (Automatic level control compressor)
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