A/c not working, no power to a/c button - Hyundai Forums : Hyundai Forum
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post #1 of 11 (permalink) Old 06-08-2013, 10:30 PM Thread Starter
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my70stangs
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A/c not working, no power to a/c button

I just bought a 2000 Accent for my sons first car. I an having some problems with the a/c not working. Here is a little history of the car, the dude I got the car from said the a/c was working before someone broke out the radio bezel to seal the radio( I don't know for sure that it was working). I replaced the bezel and installed a factory radio and everything works fine ( radio, blower,clock , lighter & all wiring looks good). The only thing that is not working is the a/c button it will not light up and there is not power going in or out of the switch. I checked all the fuses and relays and they are good. I used a jumper wire on the compressor and it kicks in, but is a little low on Freon( going to top it off tomorrow). Will the triple switch kill the power to the a/c button( I would think it would just kill power to the compressor)? Is there another switch or relay that I might be missing somewhere? I did a search and found this it sounds like the same problem im having,

https://www.hyundai-forums.com/183-lc...-not-cold.html
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post #2 of 11 (permalink) Old 06-09-2013, 07:15 AM
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Attached is the other half of the diagram that I included in the previous post you mentioned.

The heater blower relay feeds power to a fuse in the engine fusebox called "A/C 2". If the fuse is OK and it tests live, you are then facing a wiring issue. In that case, I would string a long wire (thru the window) from the fuse to the A/C switch just as a test.

For more info:
Be sure to register for FREE access to the Hyundai on-line Shop Manuals. See Sticky.


Jim
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post #3 of 11 (permalink) Old 06-09-2013, 12:34 PM Thread Starter
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my70stangs
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All fuses and relays are good ,I'm having a hard time finding what color wires should be hot on the switch so I can run a live wire to it. Where in the manual are the color keys for the wires? Thanks for the help!!
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post #4 of 11 (permalink) Old 06-09-2013, 05:52 PM
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Red/Or wire feeds the switch.
Pink comes out.


WIRE COLOR ABBREVIATIONS
The following abbreviations are used to identify wire colors in the circuit schematics :







Symbol
Color of wire
Symbol
Color of wire
B
Black
O
Orange
Be
Beige
P
Pink
Br
Brown
Pp
Purple
G
Green
R
Red
Gr
Gray
T
Tawny
L
Blue
W
White
Lg
Light Green
Y
Yellow
Ll
Light blue
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post #5 of 11 (permalink) Old 06-14-2014, 12:00 PM
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a/c works with jumper but not switch

Hello folks. I appreciate all the posts on the forum. I have a 2000 accent.

I followed the instructions to jumper the relay and the compressor works and blows cold air. No power to switch. There was power at the a/c fan2 terminals but I jumpered some terminals there to see what would happen and now there is no power there. Any ideas as to what i might have blown. 20A fan fuse and 10A compressor fuse are okay. Compressor still works when I jumper the relay.

Question: Should the cond fan come on when the compressor starts?
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post #6 of 11 (permalink) Old 06-14-2014, 04:57 PM
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The Cond fan doesn't come on with the compressor; it is under the control of the ECM which monitors various temp/load conditions.

The A/C dash switch only gets power when the heater blower is running.
See the 2 attached diagrams.

Jim
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File Type: gif 2002_Heater_2.gif (63.5 KB, 30 views)
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post #7 of 11 (permalink) Old 06-15-2014, 06:22 PM
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Thank you so much for the diagrams Barnyspup. I discovered that the a/c works when the selector is in Defrost, the condenser fan runs, cold air from dash. If I am reading the diagram correctly the Defrost bypasses the a/c switch and everthing else then functions as if the a/c switch was engaged. This would seem to suggest the a/c switch is faulty. Any thoughts from anyone on this.

With the selector on Defrost I can just disconnect the cable from the duct and set the duct by hand on vent and I have my a/c as it should be.
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post #8 of 11 (permalink) Old 06-15-2014, 06:36 PM
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I agree; the switch seems to be suspect #1.

Jim
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post #9 of 11 (permalink) Old 06-15-2014, 08:20 PM
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Well.....I have a/c. The light does not come on in the a/c switch but the switch turns on the a/c. Perhaps I was fooled by the light from the start but I don't think it came on before I disconnected and reconnected the switch harness. I guess I will never know. This week is bringing some hotter weather so I can test it.

Anyways thanks again for all the posts and info provided. I wish everyone a fantastic summer.
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post #10 of 11 (permalink) Old 03-02-2016, 11:13 AM
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Hi,

I'm having problems with the same switch, I don't know how to wire it. Part number is 97259-25100.

Cables are connected independently to each of the 5 pins (see attached image). When the switch is on off position, pins 1 and 3 are bridged, when the switch is in on position pins 1, 2 and 3 are bridged.

I have five cables to connect:
-black and red joined together
-green
-green with orange stripe
-orange
-a second red cable

any ideas how I should wire it to power up the compressor only when the switch is in on position and the blower is turned on?

BTW, this AC didn't came installed from factory, was bought from an external suplier.

thanks in advance!
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Last edited by dromero; 03-02-2016 at 11:17 AM. Reason: adding info
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