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The AC unit is not getting electricity It.

Tiny
GABE010
  • MEMBER
  • 1994 VOLVO 940
  • 190,000 MILES
The AC unit is not getting electricity
It works fine when I manually bypass the circuit, but the actual wire going to it has no juice
Is there an AC relay switch or fuse that I am not seeing?
Or what?
Wednesday, March 20th, 2013 AT 3:12 AM

11 Replies

Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
Whats the ac pressure read when the car is off?If the pressure is too high or low the ac compressor will be shut off.
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Wednesday, March 20th, 2013 AT 4:45 AM
Tiny
GABE010
  • MEMBER
  • 6 POSTS
OK
So the pressure is very high when it is not working
However when I "jump" the AC it works and pressure is good
So I still think it is electric
Gabe
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Wednesday, March 20th, 2013 AT 12:52 PM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
How high is the pressure with the ac off?
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Wednesday, March 20th, 2013 AT 2:17 PM
Tiny
GABE010
  • MEMBER
  • 6 POSTS
In the red zone
How is this direction of thinking going to help?
I am trying to tell you that the wire going to the AC has no juice
It would have to have electricity to shut off !
When I do get current to it it works and does NOT shut off and pressure is good
It is Not the AC, it is electrical.
Can you help or not?
G
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Wednesday, March 20th, 2013 AT 2:23 PM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
I can help do you have turbo or non turbo so I can findthe correct wire diagram?
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Wednesday, March 20th, 2013 AT 7:46 PM
Tiny
GABE010
  • MEMBER
  • 6 POSTS
Turbo
Thank you
Gabe
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Wednesday, March 20th, 2013 AT 9:14 PM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
Alright with the ac on and the car running you should have power across the low pressure switch both wires on the accumulator?You should also have power across the high pressure switch both wires behind the center of front bumper?
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Thursday, March 21st, 2013 AT 12:55 AM
Tiny
GABE010
  • MEMBER
  • 6 POSTS
If you're talking about the cable which is on tope left (sa facing car) right next to where the refill nipple is:
that's where there is no electric no matter what
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Thursday, March 21st, 2013 AT 1:07 AM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
Where your drier is?Thats the low side switch that gets power from your ac controls switch. Go back to your ac controls switch see if you have power out of the green wire with a red stripe with the ac on and the car running?
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Thursday, March 21st, 2013 AT 2:01 AM
Tiny
GABE010
  • MEMBER
  • 6 POSTS
Thanks
Will check tomorrow
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Thursday, March 21st, 2013 AT 2:02 AM
Tiny
SATURNTECH9
  • MECHANIC
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Alright keep me posted.
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Thursday, March 21st, 2013 AT 2:51 AM

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