A/C fans not coming on in 2004 RSX Type S

40

Asked by Jun 09, 2013 at 12:26 PM about the 2004 Acura RSX Type-S

Question type: Maintenance & Repair

The A/C only works when I'm driving at least 40 mph. The pressures are good and it doesn't need any refrigerant added. I checked the relays and the fuses in the fuse box, all are good. But the neither the Condenser Fan on the Driver-side or the Radiator Fan on the Passenger-side are coming on. I believe they both should be coming on with the A/C on high and Recirc on. I ran the engine for about 20 minutes, but the Radiator Fan doesn't seem to be coming on when the engine gets warm either. I disconnected the Radiator Fan switch at the bottom of the radiator and tried to jumper the terminals to see if the fans would come on, but it didn't work. It doesn't seem likely that both fan motors would be out at the same time. If I can get my big hands in there, I'm going to run a jumper from the battery terminal to each one, just to be sure they still work. I've read somewhere that it could be a ground got disconnected, but I can't locate it.

Has anyone else experienced anything similar to this? Does anyone have a wiring diagram for the A/C electrical circuit?

10 Answers

I'd check the blower motor resistors---only 2 of 4 selections still work on my 93 Toyota pickup---did you try various speeds? -or- none speed indicating a blown fuse or stuck relay?

1 out of 1 people think this is helpful.

could it be a defective BCM (body control module)? see we're in the land of modules these days...ones that you cannot fix, but have to replace...no doubt you've cleaned the black 1/0 wire to the chassis connection?...this is an important one....I'd do that before looking 'pon your BCM...but will look into your schematic if you need some more help with your modules~

...cannot find the schematic...not for public...gotta buy a book to see it~ Saw only wisps of mention of the BCM...will investigate what this device is supposed to be doing that it isn't~

ICU integrated control unit is what keeps comin' up~ gonna have to say this guru is out of gas on your problem...there has to be more to this~

perhaps you've got a schematic in your owner's manual that can indicate where the power to the fans is supposed to be coming from...that's what we need to see, whether or not tucked into one of these modules or independent with relays is really something one cannot say without the electrical schematic~apologies all around...judge_roy

1 out of 1 people think this is helpful.
40

Here's the schematic of the wiring, I think it's for a 2004 TSX but should be close enough.

4 out of 4 people think this is helpful.

wow bradgud, I am impressed...there seems to be a transistor added there...is there a story associated with that one?---or that's another buggy? the module---blank box ? is a relay...need to study this some more with regard to your problem...thanks again for gettin' this one~ judge

your relay box has two fuses, and two relays responsible for the motor comin' on...are these fuses blown (in the main box)?

mutual ground G301 for both of these relays...you might check this ground connection, if you can find it~

http://www.summitracing.com/search/department/cooling-heating/part- type/fan-switches-thermal/brand/beck- arnley/year/2004/make/acura/model/rsx/submodel/type-s fan switch about 20 bucks~

Your Answer

Add photo

Related Questions

RSX

Looking for a Used RSX in your area?

CarGurus has 510 nationwide RSX listings starting at $1,995.

ZIP:

Search Acura RSX Questions

Acura RSX Experts

#1 FordNut
FordNut
Reputation 90
#2 Chamal Abeysekera
Chamal Abeysekera
Reputation 80
#3 dandyoun
dandyoun
Reputation 50
View All

Related Models For Sale

Used Honda Civic
1,187 Great Deals out of 65,344 listings starting at $1,500
Used Acura TL
327 Great Deals out of 7,098 listings starting at $2,000
Used Honda Civic Coupe
332 Great Deals out of 17,022 listings starting at $999
Used Acura TSX
162 Great Deals out of 3,620 listings starting at $1,500
Used Infiniti G35
128 Great Deals out of 3,620 listings starting at $2,195
Used Mitsubishi Lancer Evolution
16 Great Deals out of 722 listings starting at $11,990
Used Honda S2000
14 Great Deals out of 354 listings starting at $8,495
Used Nissan 350Z
85 Great Deals out of 1,442 listings starting at $3,900
Used Honda Accord
1,208 Great Deals out of 77,538 listings starting at $969
Used Subaru Impreza WRX STi
36 Great Deals out of 639 listings starting at $8,500
Used Ford Mustang
696 Great Deals out of 38,429 listings starting at $1,963
Used Subaru Impreza WRX
47 Great Deals out of 1,256 listings starting at $1,999
Used Honda Accord Coupe
252 Great Deals out of 11,643 listings starting at $1,350
Used BMW 3 Series
1,765 Great Deals out of 40,858 listings starting at $1,250

Used Cars For Sale

2006 Acura RSX Type-S For Sale
5 Great Deals out of 51 listings starting at $5,500
2005 Acura RSX Type-S For Sale
3 Great Deals out of 37 listings starting at $4,995
2004 Acura RSX Type-S For Sale
20 listings starting at $4,500
2003 Acura RSX Type-S For Sale
18 listings starting at $2,995
2002 Acura RSX Type-S For Sale
32 listings starting at $3,500