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No power to my a/c

Discussion in '2nd Gen 4Runners (1990-1995)' started by nibsirb87, Jul 8, 2016.

  1. Jul 8, 2016 at 3:53 PM
    #1
    nibsirb87

    nibsirb87 [OP] New Member

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    When i turn on my A/C not only does it not turn on, but no power is going to it whatsoever. The lights don't even come on. Everything else in the dash from dash lights to radio to glove box light come on but not the a/c.....anyone have any ideas? Any suggestions would be greatly appreciated.
     
  2. Jul 17, 2016 at 11:02 AM
    #2
    Bob

    Bob Member Staff Member

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    Fuse? Did you ever get this figured this out?
     
  3. Jul 17, 2016 at 11:05 AM
    #3
    nibsirb87

    nibsirb87 [OP] New Member

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    No I have yet to figure it out...ive done all the fuses and relays and still no luck. Trying to avoid taking it to a mechanic just cause they are outrageous on prices
     
  4. Jul 18, 2016 at 4:07 AM
    #4
    RonT4R

    RonT4R New Member

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    Also some A/C systems have a pressure switch and if there is not enough Freon in the system the compressor clutch will not engage.
     
  5. Jul 18, 2016 at 4:17 AM
    #5
    nibsirb87

    nibsirb87 [OP] New Member

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  6. Jul 19, 2016 at 6:49 AM
    #6
    nibsirb87

    nibsirb87 [OP] New Member

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    I tried this yesterday and unfortunately i still have no power...the lights on the ac button still do t even come one nor does the ac even try to kick on
     
    90 2door likes this.
  7. Jul 19, 2016 at 7:33 AM
    #7
    RonT4R

    RonT4R New Member

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    Then it's a power issue, either a switch or relay.....
     
  8. Jul 19, 2016 at 7:47 AM
    #8
    nibsirb87

    nibsirb87 [OP] New Member

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    I've changed all relays...where can I find the switch?
     
  9. Jul 19, 2016 at 9:32 AM
    #9
    RonT4R

    RonT4R New Member

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    you have an A/C switch on the environmental panel? It could be worn out.

    It's a 94' right.....There has to be a schematic online somewhere.....let me do some digging.
     
    nibsirb87 [OP] likes this.
  10. Jul 19, 2016 at 9:34 AM
    #10
    nibsirb87

    nibsirb87 [OP] New Member

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    Id really appreciate that
     
  11. Jul 19, 2016 at 9:36 AM
    #11
    RonT4R

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  12. Jul 19, 2016 at 9:38 AM
    #12
    RonT4R

    RonT4R New Member

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    Above is the schematic from a 1995 4Runner should be the same. I see 4 fuses and several switches that can be checked. Remember Google is your friend and so is youtube in helping locate common problems if it is a common problem.
     
    nibsirb87 [OP] likes this.
  13. Jul 26, 2016 at 9:53 PM
    #13
    Kyle11863

    Kyle11863 King of the BS

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    My bet is it is the switch. If the light isn't coming on it has to be that. I took mine apart and I know the light is a diode, not a conventional light bulb, so it shouldn't burn out. You can find the switch on ebay (little pricey) or at a junkyard. Just gotta do some searching
     
  14. Jul 27, 2016 at 3:47 AM
    #14
    nibsirb87

    nibsirb87 [OP] New Member

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    Ok great. Thanks a lot. Any clue as to what its actually called?
     
  15. Jul 28, 2016 at 8:10 PM
    #15
    Kyle11863

    Kyle11863 King of the BS

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    Just A/C button I believe
     
  16. Jul 28, 2016 at 8:13 PM
    #16
    nibsirb87

    nibsirb87 [OP] New Member

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    Alright thanks I'll be working on this all weekend. Hopefully that's the issue
     
  17. Jul 28, 2016 at 8:31 PM
    #17
    Kyle11863

    Kyle11863 King of the BS

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  18. Jul 29, 2016 at 6:27 AM
    #18
    nibsirb87

    nibsirb87 [OP] New Member

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    Thank you
     
  19. Jul 29, 2016 at 12:31 PM
    #19
    Gene243

    Gene243 New Member

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    Can I suggest you short the switch leads together and see if the rest of the system works before you buy a switch?
     
  20. Jul 29, 2016 at 1:12 PM
    #20
    nibsirb87

    nibsirb87 [OP] New Member

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    Any info helps. I appreciate everyone's ideas.
     
  21. Jul 29, 2016 at 7:14 PM
    #21
    Kyle11863

    Kyle11863 King of the BS

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    Shorting would be difficult. You don't have a wiring harness that plugs into the button. Instead you push the button into a recessed hole that is about 1.5-2 inches deep. Switches are cheap enough where its a decent start. Worst case scenario you have an extra switch for cheap
     
  22. Aug 18, 2016 at 7:04 AM
    #22
    rudyi

    rudyi New Member

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    Check the 15A fuse below the glove compartment.
     

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