Not getting power to ac compressor from ac control module

Asked by Aug 29, 2013 at 10:56 PM about the 1996 Toyota Camry LE

Question type: Maintenance & Repair

I have check for power to all ac switches 'relays low and high cut out switch and all work
up till you get to the ac control module . When you push the power switch power gose to
the module but no power comes out on the wire that goes to the relay that powers the
compressor I replaced the control module and still no power .I can by pass the curcit
through the control module and make the compressor come on.

11 Answers

113,245

Check your low pressure switch. Can unplug it and place jumper in wire harness. If compressor then comes on check freon pressure for proper charge if that's ok replace switch. Would not advice running it with jumper installed other than just for testing purposes.

2 of 2 people found this helpful.
160

Good answer ......jump the low pressure switch!!!!

Thanks but thats not it I fixed it .It was not getting a ground from the ecu to the ac control module . When you push the ac power on it sends a power signal to the control module. The module sends a power signal to the ecu and the ecu sends a ground back to the control module to ground the ac compressor relay then the relay sends power to the compressor.The pressure switches are wired in to the ecu to kill power to the system . I have fixed alot of electrical problems but the way this system is wired it just about kick my butt I had to sit and think hard on this one.

12 of 12 people found this helpful.
113,245

Glad you got it. Thanks for the added info on what you found.

2 of 2 people found this helpful.
30

I think I have the same problem. How did you fixed it? Replace ECU?

3 of 3 people found this helpful.
110

That is what I did and it fixed it. If you do get one from a salvage yard make sure you get one that came out of a car with AC because I had got one at first without AC and it made me think I was going crazy and did not know what I was doing. Just a little more help. Hope you get it fix. This all started when I replaced the ECU for a engine stall when it got hot and would not start The customer had bought the part when I told him what was wrong with the no start problem. The ECU was only one number off and it made the car crank and run with no problem but he did not try the AC for a couple of days and that's when I figure out that the ECU was the problem with the AC..

1 of 1 people found this helpful.
3,255

Compressor relay rh lower kick panel replace.clutch relay big problem With toyota

5 of 5 people found this helpful.
80

i get power to my relay box in my engine room but it does not power my cable to the compressor what should i do

8 of 8 people found this helpful.
20

high pressure switch and ac magnetic compressor relay check and , you can check measure ac relay holding coil voltage

2 of 2 people found this helpful.

Check the ecu ground, missing somewhere, correct it.pressure control module need it to be function right.

maybe a place to look,no voltage to comp clutch,2004 chevy pick up

Your Answer

Camry

Looking for a Used Camry in your area?

CarGurus has 72,557 nationwide Camry listings starting at $1,000.

ZIP:

Toyota Camry Experts

  • #1
    Reelin68
    Reputation
    13,270
  • #2
    Tom Demyan
    Reputation
    4,560
  • #3
    tenspeed
    Reputation
    2,990
View All

Related Models For Sale

Used Honda Accord
1,046 Great Deals out of 63,026 listings starting at $999
Used Toyota Corolla
924 Great Deals out of 66,546 listings starting at $1,000
Used Honda Civic
844 Great Deals out of 78,708 listings starting at $888
Used Nissan Altima
1,120 Great Deals out of 74,981 listings starting at $999
Used Toyota Avalon
273 Great Deals out of 16,538 listings starting at $1,095
Used Toyota RAV4
906 Great Deals out of 60,574 listings starting at $1,690
Used Hyundai Sonata
746 Great Deals out of 47,933 listings starting at $199
Used Nissan Maxima
323 Great Deals out of 23,728 listings starting at $1,550
Used Honda CR-V
878 Great Deals out of 55,045 listings starting at $1,007
Used Toyota 4Runner
244 Great Deals out of 21,760 listings starting at $1,500
Used Chevrolet Malibu
1,258 Great Deals out of 77,876 listings starting at $1,500
Used Toyota Tacoma
568 Great Deals out of 42,381 listings starting at $2,999

Used Cars For Sale

2018 Toyota Camry LE For Sale
5,096 listings starting at $21,464
2017 Toyota Camry LE For Sale
17 Great Deals out of 10,534 listings starting at $13,991
2016 Toyota Camry LE For Sale
38 Great Deals out of 1,562 listings starting at $11,874
2015 Toyota Camry LE For Sale
31 Great Deals out of 1,364 listings starting at $9,500
2014 Toyota Camry LE For Sale
79 Great Deals out of 2,023 listings starting at $7,950

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.