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Ecu or climate control unit
I've been looking over wiring diagrams enough to make me go cross eyed and I am confident my fan and compressor problem is coming from a faulty ecu or my climate control unit. Does anyone have for dummies version on how to test the ecu for fan and compressor not running. I could not find a Pin out or wiring diagram.
Problem symptoms: AC compressor does not engage and radiator fans do not turn on I have some more clues that might help me solve this problem. r134 pressure is good ac amplifier functions as it should and does not throw codes. blower and other climate controls work as they should radiator fans do not turn on automatically when driving fans do not turn on when auto hi is selected no check engine light Fan LH and RH fuse are good and getting power AC fuse is good and getting power I can jump the AC relay 7 and turn on my compressor Relay fan LH2 is getting 13v at the white/ red wire and when I connect the blue/red wire to battery it turn the fan on relay fan RH2 is getting 13v at the black/ red wire and when I connect the red/white wire to battery it turns the fan on Relay fan RH1 and LH1 are both receiving 13v at red/white wire I am suspecting the ECU but I am also thinking it could be the auto amp unit Is there anything else i should be checking that can narrow my search or rule one of the two things out
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[SIGPIC][/SIGPIC] STi BBS wheels,legacy gt 4.44, 3" catback exhaust, Stance GR+ 7k/5k, QS Teflon adjustable endlinks, Hankook EVO 245/40/17, 95-LS escaine seats, GC8 V7 steering wheel, JDM clear corners, small car clear lenses, Alcyone badge, JDM rear taillight, 97 grille, stevesby bumper, PWR radiator, Perrin Crank pulley, Urethane Swaybar bushings, urethane diff bushings, DDM 6k 55watt lows and 4500k 35watt fog lights; $15/15min mod, Motorsport whs 22mm rear swaybar, QC shift kit, ToMyx intake, z32 aluminum calipers 13" rotors, nitrous express proton + wet kit. Last edited by jman050; 07-11-2013 at 07:55 PM. |
#2
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Re: Ecu or climate control unit
Bump. I'm having the same problem but my cooling fans will come on to keep the engine cool. But the ac compressor won't come on nor the fan via the ac turning it on.
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#1 1994 Ls ebony parts car-rip #2 1994 L laguna blue - sold #3 1992 Lsi pearl white - sold #4 1992 Lsi pearl white -Ate two engines - Rip #5 1994 L Laguna Blue fwd - Now Awd and manual - 03 wrx 5mt - 18's stern warp st4s - totaled hit a tree #6 1992 Lsi custom orange parts car #7 1992 Lsi green 4.44 swap. Currently for sale #8 1992 Lsi custom pearl white. Project car... sold #9 1992 Teal 4.44 swapped... sold #10 1995 Laguna Blue. Sti 19 wheels, #11 1994 Laguna Blue. Came with #10 engine and trans are out but plan to put it back on the road. Willing to sell it at any time! 😂 |
#3
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Re: Ecu or climate control unit
To the OP, did you ever check for error codes? It could be the trinary switch.
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#4
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Re: Ecu or climate control unit
Freon in the system/charged?
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#5
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Re: Ecu or climate control unit
Had the system charged. Was leaking thru the trianry switch. Replaced the switch and filled it back up today and still won't work ::
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#1 1994 Ls ebony parts car-rip #2 1994 L laguna blue - sold #3 1992 Lsi pearl white - sold #4 1992 Lsi pearl white -Ate two engines - Rip #5 1994 L Laguna Blue fwd - Now Awd and manual - 03 wrx 5mt - 18's stern warp st4s - totaled hit a tree #6 1992 Lsi custom orange parts car #7 1992 Lsi green 4.44 swap. Currently for sale #8 1992 Lsi custom pearl white. Project car... sold #9 1992 Teal 4.44 swapped... sold #10 1995 Laguna Blue. Sti 19 wheels, #11 1994 Laguna Blue. Came with #10 engine and trans are out but plan to put it back on the road. Willing to sell it at any time! 😂 |
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Re: Ecu or climate control unit
It gave two codes 00 & 41 but I haven't found what 41 is.
I dont know if it could be the ecu as talked about in this thread. http://www.subaru-svx.net/forum/show...%2Fc+diagnosis
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#1 1994 Ls ebony parts car-rip #2 1994 L laguna blue - sold #3 1992 Lsi pearl white - sold #4 1992 Lsi pearl white -Ate two engines - Rip #5 1994 L Laguna Blue fwd - Now Awd and manual - 03 wrx 5mt - 18's stern warp st4s - totaled hit a tree #6 1992 Lsi custom orange parts car #7 1992 Lsi green 4.44 swap. Currently for sale #8 1992 Lsi custom pearl white. Project car... sold #9 1992 Teal 4.44 swapped... sold #10 1995 Laguna Blue. Sti 19 wheels, #11 1994 Laguna Blue. Came with #10 engine and trans are out but plan to put it back on the road. Willing to sell it at any time! 😂 Last edited by stiguy; 09-17-2013 at 09:26 PM. |
#7
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Re: Ecu or climate control unit
Quote:
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01- Impreza RS Original Owner 92- SVX LS-L |
#8
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Re: Ecu or climate control unit
No I havevt yet. Gotta try and get my hands on one to test it out
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#1 1994 Ls ebony parts car-rip #2 1994 L laguna blue - sold #3 1992 Lsi pearl white - sold #4 1992 Lsi pearl white -Ate two engines - Rip #5 1994 L Laguna Blue fwd - Now Awd and manual - 03 wrx 5mt - 18's stern warp st4s - totaled hit a tree #6 1992 Lsi custom orange parts car #7 1992 Lsi green 4.44 swap. Currently for sale #8 1992 Lsi custom pearl white. Project car... sold #9 1992 Teal 4.44 swapped... sold #10 1995 Laguna Blue. Sti 19 wheels, #11 1994 Laguna Blue. Came with #10 engine and trans are out but plan to put it back on the road. Willing to sell it at any time! 😂 |
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