Roy
Sep 2, 2019 at 9:43 AM
No signal to A/C compressor relay
2010 CADILLAC ESCALADE
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Sounds good.
Roy
Roy
I'm back. I think I did the testing wrong. I was by numbers of the relay but I think is not right.
key on i do get 14 volts on 2 pins according to the relay numbers is pin 30, 86? what are the chances that the numbers of relays are wrong? out of the 4 pins of the relay, only 2 of them supposed to be hot correct?
key on i do get 14 volts on 2 pins according to the relay numbers is pin 30, 86? what are the chances that the numbers of relays are wrong? out of the 4 pins of the relay, only 2 of them supposed to be hot correct?
Sep 2, 2019 at 10:25 AM
Yes.
Sep 2, 2019 at 5:10 PM
Okay, so that means the relay is working and i am getting control voltage.
does that mean the AC pressure switch is the issue?
does that mean the AC pressure switch is the issue?
Sep 3, 2019 at 3:52 AM
No, if the relay is clicking, the compressor should come on.
Roy
Roy
Sep 3, 2019 at 4:13 AM
my last message did not post. my relay was clicking because i was jumping the wrong pins
30, 85 are getting power, without any jumping wirers.
30, 85 are getting power, without any jumping wirers.
Sep 3, 2019 at 4:27 AM
Okay, then the ground for the control side, which is the PCM, is the issue. It will not ground the relay until it sees the correct signal from the pressure switch.
Do you have a scan tool to monitor the switch?
Roy
Do you have a scan tool to monitor the switch?
Roy
Sep 3, 2019 at 4:44 AM
I have a basic scanner wont read any AC sensor. In case of switch is the problem you thing might be a broken wire or something else ? Last shop I took it they did trace down to the switch not getting any power. That's when they said ECM was bad and i bought a new one put it on and nothing.
Sep 3, 2019 at 5:37 AM
Double-check for voltage to the pressure switch. You should have 5 volts.
Roy
Roy
Sep 3, 2019 at 6:03 AM
Can i ask a question when ASEMASTER6371 says to replace the fuse box is this correct or is it the replay box as I have identical problems “There is a common bus bar that feeds different terminals.
You need the whole fuse block.
Yes, you can jump it temporarily until you repair it correctly.
Roy”
You need the whole fuse block.
Yes, you can jump it temporarily until you repair it correctly.
Roy”
Apr 14, 2023 at 11:31 PM
Hello, you will have to make a new post for this question. It is required for new questions. This post is 3 years old. Thank you.
Apr 18, 2023 at 3:16 AM
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