A/C compressor not getting voltage

YEEP

MEMBER
2017 NISSAN VERSA
1.6L
4 CYL
2WD
AUTOMATIC
50,000 MILES

Compressor is not kicking on. Checked the fuse and it is good. I couldn't find a relay for it. I jumped the low pressure sensor to see if that was the problem but still no voltage. I wired the compressor directly to the battery and it kicks on. Maybe a wire diagram could help me pint point the issue?

3 Replies

DANNY L

MECHANIC
5,648 POSTS

Hello, I'm Danny.

I've attached the A/C system wiring diagram below that you requested. I've cut both pictures in half so you can view larger. Hope this helps and thanks for using 2CarPros.

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Sunday, August 2nd, 2020 AT 10:23 PM

YEEP

MEMBER
2 POSTS

Thank you. Turns out the the low pressure senor is getting voltage but only 5v. Is that enough for it to operate properly?

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Monday, August 3rd, 2020 AT 8:37 AM

DANNY L

MECHANIC
5,648 POSTS

Hello again.

Just curious. Has the A/C system been worked on previously? There is a cut-out switch within the system to shut off the A/C compressor if low refrigerant is detected to prevent damage to the system until proper level is restored. Just wondering if you might have a leak in the system.I'll get the low pressure sensor voltage value for you. Hope this helps and thanks again for using 2CarPros.

Danny-

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Wednesday, August 5th, 2020 AT 11:39 PM