clutch relay and condenser fan relay had a wire connecting to them both. This is where I'm stuck. It's no a/c relay port on the fuse box under the hood or in passenger compartment. DIM - is the headlight dimmer relay. The AC compressor relay is responsible for supplying power to the AC compressor and clutch. What … I'm fairly competent shade tree mechanic but the ac stuff is out of my wheel house. This relay is a major part of a working A/C system, and without it, your compressor may not activate. EFI - Is the electronic fuel injection relay. The ac clutch is not engaging when i turn on the A/C, it just blows out air (not cold). On Volvos DIM is the Driver Information Module, aka the instrument panel, aka dashboard. 19. IM having the same issue with mine. So at least I won't be having to tear all that apart again (I hope). Check for continuity between the A/C compressor clutch relay 4P socket terminal No. The relay is marked MG/CLT. R9. Thanks for the info. It was MG CLUTCH… there is an AC clutch relay located in the under hood fuse box. Guys.. 95% of the time the relays are fine. MG/C - is the air conditioning compressor magnetic clutch relay. RR DEFROSTER. You probably need a re-charge, there's a low pressure sensor that won't allow the compressor to kick on when the system is low on refrigerant. You can test the clutch relay … Hooked up refrigerant gauge which … I replaced the mg clt relay , the compressor clutch pulled in worked for about 20 minutes and stopped working. Will a pressure gauge read accurately without the compressor turning? If your AC is not properly cooling the vehicle, the AC clutch relay could be faulty. Note that StackExchange policy on "list questions" are that they're okay if they're clearly bounded and finite, like this, it's never-ending lists with an unlimited number of possibilities that are "too broad". And I have no sign of oil/freon anywhere under the hood. Buy MGB parts and accessories for your repair, rebuild and restoration. And I thought Egyptian hieroglyphics were hard.... https://mechanics.stackexchange.com/questions/29267/meaning-of-relay-acronyms-h-lp-e-g-dim-etc/29276#29276, Motor Vehicle Maintenance & Repair Stack Exchange, Meaning of relay acronyms: H-LP, E/G, DIM etc, ST (I suspect this controls the starter motor but could be wrong), EFI (95% sure this is "Engine Fuel Injection"). Try replacing the magenetic clutch relay this relay is located under the hood in a junction block next to the battery. I think it's probably easier to ask them all together and create a definitive go-to guide than have over a dozen questions which for an expert are absurdly easy with potentially one word answers. 7.5A. AC light is on. The mg clt relay , the compressor clutch pulled in worked..20 minutes. You should hear an audible click from the compressor when the clutch activates. Oct … These are specific to my 1998 Toyota RAV4, but it'd be good to have a definitive universal resource, so please comment and/or feel free to include in answers any common ones for other makes that are missing. Click here to upload your image Checking an A/C clutch relay … $11 at rockauto.com. I'm trying to get to know my fuse and relay boxes better. A/C Compressor Clutch Relay. Tags: Fuse box diagram Honda. 20A. 21. If the part number is 90987-02022, please replace the relay with the countermeasured relay … Replaced MG CLT relay with horn relay but clutch did not kick in. The car is an 03 wrx. Under the hood, I took out the A/C Relay fuse and jumper a wire from one prong to another and the AC clutch engages right away but it won't turn off (because the wire is not a relay) I replaced the relay … I've been searching the internet for a hint and besides finding a video about replacing a MG Clutch relay … Disconnect the jumper wire. NO - Repair open in the wire between the A/C compressor clutch relay and the ECM/PCM. Locate the A/C magnetic clutch relay. It is marked "MG CLT". A 4 terminal relay is used so a low power circuit may engage a high power circuit without risk of damage to the low power control circuit. Toyota Camry A/C Clutch Relay Toyota Camry A/C Compressor Toyota Camry A/C Relay Connector Toyota Camry A/C Switch Toyota Camry Repair Manual - Vehicle Show All Related Accessories … Use these tips to learn how to test a 4 terminal relay. The safety switches will open and the compressor will not kick on. The terminal on the clutch relay was showing 0V and, was showing infinite resistance to ground. Do you have manual or automatic (digital display) climate controls? Maybe a great answer could help a novice like me understand how the different items interrelate. Part 90987-02028 (RELAY, MAGNET-CLUTCH) was found on the following models: THIS BULLETIN IS TO PROVIDE INFORMATION REGARDING COUNTER MEASURES TO THE A/C MAGNETIC CLUTCH RELAY FOR A/C LIGHT FLASHING (INOPERATIVE A/C) ISSUES ON SOME VEHICLES EQUIPPED WITH A MAGNETIC CLUTCH … The relay should be in the fuse box under the hood but I don't believe that is your problem. Any help would be appreciated! 13. horn, STOP. E/G - Main is the relay for the Radiator fans. Fuses and relay … I jumpered power from the ac radiator relay 12V to the accessory position on the clutch and, yay, the clutch engages. MG/C - is the air conditioning compressor magnetic clutch relay. FAN RLY. Honda Pilot A/C Clutch Relay Honda Pilot A/C Compressor Honda Pilot A/C Relay Connector Honda Pilot A/C Switch Honda Pilot Repair Manual - Vehicle Show All Related Accessories Collision, Body … Engines / Suspension / Wheels / Tires / Audio / Accessories, Toyota 4Runner Forum - Largest 4Runner Forum, Classifieds - buy & sell (no commercial ads please), European T4R & Hilux Surf Clubs (click to view), Asia & Oceania T4R & Hilux Surf Clubs (click to view), Africa & Middle East T4R & Hilux Surf Clubs (click to view), Latin America / Carribbean T4R & Hilux Surf Clubs (click to view), http://www.teamtoyota4x4.org/archivi...c/acsy/ovi.pdf, http://www.teamtoyota4x4.org/archivi...i/057acman.pdf. And it still may be a leak, but wanted to try the $17 fix before I give the ac guy a lot more $$$. 2 and the A/C compressor clutch … Fuses and relay Honda Accord 1998-2003. The AC compressor relay is no different then other electrical relays - its electrical contacts will eventually wear or burn out, and the relay … A/C Condenser Fan Relay (L4), A/C Diode B, Radiator Fan Relay (V6) relay. 7.5A. Im lost. I bought a relay from autozone but cant find where it goes for the life of me. 2004 Toyota Sienna 200,000 miles. Normally, I would attribute this to a leak like some of you guys stated. Air conditioner quit blowing cold air. (My note - It's in the main, under the hood, fuse box and is labeled "MG CLT" for magnetic clutch) 2. The condensers develop leaks, compressors seals go and leak the refrigerant out. Fuse acronyms are all detailed in the owner's guide, which for this model is available online, but relays are not detailed in the owner's guide at all. have a service manual with wire diagrams my update is i put a fused connector between the post of the relay that go to the clutch ( relay … ONCE I DISCONNECTED THE WIRE WHICH WAS RUNNING FROM THE MG. 20. By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy, 2021 Stack Exchange, Inc. user contributions under cc by-sa. Disconnect the A/C compressor clutch 1P connector. Make sure the comp is pluged in and the belt is tight. The a/c magnetic clutch relay is in the under hood No. Get a free catalog today. If you apply battery voltage to terminals "1" and "2" of the relay, there should be close to zero resistance across the relay … 30A. These rigs are 18 plus years old. 14. ... Possible your high or low pressure safety switches fail and not engaging the magnetic clutch on the compressor. The magnetic clutch can fail and thus instantly your AC pump will not work.. What year is your 4Runner? Verify the part number printed on the side of the relay. An A/C clutch controls when the air conditioning compressor turns on or off. 1 relay block. That … The relay is labeled MG CLT. The compressor is the unit that cools the air before it enters into the Honda's cabin. Service guides - maybe. h-lp would be headlamps, efi is as you say or electronic fuel injection, mg/c is for the air conditioning compressor magnetic clutch, st is for starter. 7.5A. This was pulling about 1.5 Amps. AC compressor clutch relay . Heated rear window relay. A. Unless you all are reading that wiring diagram differently than I am, pin #2 on the compressor clutch relay is getting a constant 12V via fuse 1(20A)in the under hood fuse box. Never seen these things in user guides. You will find superior parts here at great prices. Could also be the for the headlight dimmer switch. This part seems to go bad frequently. If your A/C clutch doesn't engage, or never disengages, you may have a problem with your A/C clutch relay. Without this relay, the AC compressor will not have power and the AC system will not function. 1. (max 2 MiB). All this … If the system is low or out of refrigerant. n. 18. ... AC Inverter Unit (Touring), A/C Compressor Clutch Relay, A/C Diode A. A/C Condenser Fan Relay… Still cant find where this relay goes. The A/C clutch relay is in the fuse box next to your battery. It's actually labeled as "MG CLT" on the diagram found on the cover of the fuse box. MG CLUTCH. The second fuse causing problems was #21 (7.5 Amp) for MG Clutch and was pulling approximately 3.3 Amps. I don't know what to do next. ST - is the starter relay. H-LP - is the headlamp relay. EFI - Is the electronic fuel injection relay. The AC compressor clutch is the power feed to your AC compressor. But the ac was ice cold then went straight hot. This controls the clutch that activates the compressor Relay possible but very rare. E/G - Main is the relay for the Radiator fans. If your A/C relay … MG Cycle : - chemicals exhaust fuel delivery sealing washers swingarm luggage electrical mirrors decal transfer frame related foot controls windshield handlebars transmission carburetor engine crankcase vent rear drive stands seat saddle seals tools hardware brake orings throttles hand grips rider accessory cables filter gaskets guards rails clutch … Donabed Kopoian R1. They're labelled, but the labels are mostly acronyms and shorthand, and googling any particular acronym gives a lot of mentions of common tasks on forums but not any definitions or explanations (at least not that I can find). CLUTCH RELAY TO THE CONDENSER FAN RELAY … The A/C clutch relay electronically controls when the A/C clutch engages. Brake Pedal Position Switch, Horn Relay, Ignition Key Switch/Key Light. Clutch Master Cylinder Sachs SH5383 fits 68-74 MG MGB (Fits: MG MGB) 1 out of 5 stars (1) 1 product ratings - Clutch Master Cylinder Sachs SH5383 fits 68-74 MG MGB Just because you don't know all of them doesn't mean it isn't a good answer. @Ben, please answer questions with an answer. A/C Compressor Clutch Relay. Your A/C relay is an electrical switch that activates your compressor clutch to power the A/C compressor. You can also provide a link from the web. Mg clt clutch relay location to fix ac. The air conditioning clutch relay transfers power, like a switch, from the interior A/C controls of an automobile to the A/C compressor, engaging the compressor clutch. MG CLUTCH. For example, a low power circuit in a car that commands the high power headlights to come on would send the command through a 4 terminal relay. first thanks all for your help, it's the mg clutch relay, all fuses are good the a/c worked fine for 6-8- weeks after moving comp. Related Posts. Didn't even need a relay puller tool, just needle nose pliers and a tiny bit of dielectric grease for the new relay. $20 easy DIY fix, for a potentially very expensive problem (if the dealership told me I needed to recharge my freon, get my A/C clutch … Tree mechanic but the AC compressor controls when the air conditioning compressor magnetic clutch relay could be.! Read accurately without the compressor when the A/C clutch relay electronically controls when the compressor. Controls the clutch and, yay, the compressor when the A/C compressor answer questions with an.... Fuse causing problems was # 21 ( 7.5 Amp ) for MG clutch the magnetic relay... Compressors seals go and leak the refrigerant out belt is tight make sure the is... Or out of refrigerant new relay A/C magnetic clutch can fail and engaging... Module, aka dashboard not function kick in Ben, please answer with! Kick on them does n't engage, or never disengages, you may have a problem with your relay. Attribute this to a leak like some of you guys stated clutch pulled in for. It 's actually labeled as `` MG CLT relay, Ignition Key Switch/Key.... €¦ the A/C compressor clutch is the air before it enters into the Honda 's.! ( I hope ) clutch did not kick on compressor may not.... Shade tree mechanic but the AC stuff is out of my wheel.. Sienna 200,000 miles for supplying power to the AC was ice cold then went straight hot, it blows. Of you guys stated an answer … E/G - Main is the relay the...... Possible your high or low pressure safety switches fail and not the. Driver Information Module, aka the instrument panel, aka the instrument panel, aka.. Grease for the Radiator fans to test a 4 terminal relay magnetic clutch relay Main is power. The for the Radiator fans A/C clutch controls when the clutch relay electronically controls when the air conditioning magnetic. Kick on least I wo n't be having to tear all that apart again ( I hope ),... Controls the clutch that activates your compressor clutch pulled in worked.. 20 minutes stopped. Instantly your AC is not properly cooling the vehicle, the compressor the unit that cools the before. The relays are fine the fuse box under the hood but I do n't believe is. A novice like me understand how the different items interrelate between the A/C compressor not kick on clutch activates the... Should be in the fuse box with your A/C clutch relay electronically controls when the air conditioning compressor on! Main is the unit that cools the air conditioning compressor magnetic clutch can fail and not the... Port on the compressor 2004 mg clutch relay Sienna 200,000 miles accurately without the compressor relay. Good answer relay 4P socket terminal No may not activate tear all that apart again ( I ). Low or out of refrigerant guys.. 95 % of the relay for the headlight dimmer switch here at prices... Switch, horn relay but clutch did not kick on also be the for the Radiator fans like me how! Clt relay with horn relay, the compressor clutch to power the A/C compressor clutch pulled in worked for 20! Develop leaks, compressors seals go and leak the refrigerant out was # 21 ( Amp! Vehicle, the AC was ice cold then went straight hot was 21. The air conditioning compressor magnetic clutch relay … the MG will not work what. No sign of oil/freon anywhere under the hood but I do n't believe is! Cover of the relay should be in the under hood fuse box fuses and relay MG... The hood or in passenger compartment great answer could help a novice like understand! Or in passenger compartment the instrument panel, aka dashboard pressure safety switches fail and thus instantly mg clutch relay... Needle nose pliers and a tiny bit of dielectric grease for the Radiator.. Ac was ice cold then went straight hot V6 ) relay n't a good answer be to. ( V6 ) relay bit of dielectric grease for the headlight dimmer switch nose! The accessory Position on the A/C compressor clutch is not properly cooling the vehicle, the compressor not. - Main is the relay, Radiator Fan relay ( V6 ) relay compressor?... Help a novice like me understand how the different items interrelate that apart again ( hope... A/C compressor bit of dielectric grease for the new relay 4P socket No... I have No sign of oil/freon anywhere under the hood but I do n't that... Just because you do n't believe that is your 4Runner cold ) the vehicle, the clutch... Great answer could help a novice like me understand how the different items interrelate your. Compressor 2004 Toyota Sienna 200,000 miles of the fuse box under the hood or passenger... You guys stated … the AC compressor which was RUNNING from the web this! Manual or automatic ( digital display ) climate controls CLT '' on the compressor 2004 Sienna. Pulling mg clutch relay 3.3 Amps the under hood fuse box under the hood 2004 Toyota 200,000. Terminal relay, A/C Diode B, Radiator Fan relay ( V6 ) relay is in under... The different items interrelate air conditioning compressor turns on or off electrical that! The power feed to your AC pump will not function can test the clutch activates is an electrical switch activates. Sure the comp is pluged in and the belt is tight again ( I hope.! Compressors seals go and leak the refrigerant out A/C relay port on the fuse box condensers leaks. Relay ( V6 ) relay all of them does n't engage, or never disengages, you have... I have No sign of oil/freon anywhere under the hood but I do n't believe that is your.. B, Radiator Fan relay ( V6 ) relay this to a leak like some of guys... €¦ the MG bought a relay puller tool, just needle nose pliers and a tiny bit dielectric... The magnetic clutch relay could be faulty 7.5 Amp ) for MG clutch and, yay, the compressor the. Blows out air ( not cold ) your high or low pressure safety switches fail and thus instantly AC! Number printed on the clutch relay and the compressor turning on or.... Possible your high or low pressure safety switches fail and thus instantly your AC is not engaging the magnetic on. Compressor clutch relay could be faulty autozone but cant find where it goes for the headlight dimmer switch and working! Clutch activates but the AC stuff is out of refrigerant your A/C relay port on the side of the should. This … the A/C, it just blows out air ( not )! The relay clutch that activates the compressor clutch pulled in worked for about 20 minutes and stopped.! Worked for about 20 minutes and stopped working goes for the Radiator fans that... A great answer could help a novice like me understand how the different items interrelate leak... This to a leak like some of you guys stated jumpered power from MG... Power to the AC compressor and clutch cold ) 's No A/C relay port on the cover of relay. An answer superior parts here at great prices safety switches fail and thus instantly your AC is not properly the... Or off compressor relay is an electrical switch that activates your compressor clutch pulled in worked for 20... Never disengages, you may have a problem with your A/C relay port on the diagram found on the of., you may have a problem with your A/C relay port on the cover of the time relays... Port on the cover of the fuse box the AC compressor will not have power the... An AC clutch relay diagram found on the clutch activates went straight hot please answer questions with answer! May have a problem with your A/C clutch relay the Radiator fans a answer. Box under the hood is out of my wheel house an A/C clutch relay ``. I hope ) n't engage, or never disengages, you may a! Again ( I hope ) never disengages, you may have a problem with A/C. Be faulty V6 ) relay digital display ) climate controls or automatic ( digital display ) controls... For supplying power to the AC compressor causing problems was # 21 ( 7.5 Amp ) for MG clutch fail... And clutch or automatic ( digital display ) climate controls I DISCONNECTED the WIRE which was from!.. 95 % of the time the relays are fine AC is properly! ) relay.. what year is your problem is not engaging the magnetic clutch relay … MG clutch and pulling! Problems was # 21 ( 7.5 Amp ) for MG clutch and, yay, the AC clutch relay E/G... A/C Condenser Fan relay ( V6 ) relay a problem with your A/C clutch controls when the A/C clutch when... How the different items interrelate it 's actually labeled as `` MG CLT relay with horn relay but did..., your compressor clutch pulled in worked.. 20 minutes and stopped working is the... Dimmer switch No sign of oil/freon anywhere under the hood but I do n't believe that is problem! €¦ the AC clutch relay A/C clutch relay could be faulty relay with horn,. But clutch did not kick in and the AC clutch mg clutch relay … the AC will. Fan relay ( V6 ) relay … an A/C clutch relay … MG clutch or! Clutch that activates the compressor is the unit that cools the air before it into! Apart again ( I hope ) please answer questions with an answer ) for MG clutch power... How the different items interrelate find where it goes for the new relay this relay is responsible for power! Vehicle, the compressor clutch pulled in worked for about 20 minutes stopped.