A/C Clutch not engaging

Mxzx · 08-10-2021, 03:55 PM

So I just made a harness to check in between pressure switch and ECM, I am getting 5v into the switch and 1v out, which seems to jive with the chart in the manual for 90psi of pressure. I also pulled the IPDM E/R again and took it all apart, the only relay I could find is the start control relay.
I have an appointment at Nissan to diagnose for $139, but not until the 10th. I'm at a loss.

SonicVQ · 08-11-2021, 11:09 AM

Quote:

Originally Posted by Mxzx

So I just made a harness to check in between pressure switch and ECM, I am getting 5v into the switch and 1v out, which seems to jive with the chart in the manual for 90psi of pressure. I also pulled the IPDM E/R again and took it all apart, the only relay I could find is the start control relay.
I have an appointment at Nissan to diagnose for $139, but not until the 10th. I'm at a loss.

Good troubleshooting!

I data logged my AC pressure sensor and it was also 1.0 volts with the AC on and blowing cold with outside temps at 32C / 86F.

Please update us when you know more.

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08-10-2021, 03:55 PM	#1 (permalink)
Mxzx Base Member Join Date: Oct 2020 Location: KY Posts: 28 Drives: 2011 370Z Nismo Rep Power: 5	So I just made a harness to check in between pressure switch and ECM, I am getting 5v into the switch and 1v out, which seems to jive with the chart in the manual for 90psi of pressure. I also pulled the IPDM E/R again and took it all apart, the only relay I could find is the start control relay. I have an appointment at Nissan to diagnose for $139, but not until the 10th. I'm at a loss.