Keeping the black lead on a good ground, usually a bolt on the engine block, and the blower switch turned on, use the red lead to probe the plug that usually attaches to the blower motor. even has a rubber o-ring seal and tight clips closure. Reinstalled terminal, now everything working fine after about 20 miles driving with AC and blower on a Dodge Caravan there's three of The meter should read between 9 and 11 volts or the test light will light up. Makes sense that a poor connection could also cause a fault with very low Voltage If you find neither the motor nor the switch faulty, you may want to leave the deeper troubleshooting to a professional. On this page, we've compiled the five most common reasons we see that a car's climate control system isn't working correctly. Follow the wiring harness as carefully as possible between these two locations, looking for burned out spots or breaks in the wire. It won't hurt it to remove it. Rotated all the unmarked relays around in the junction box. If the motor turns, the connector is bad. Ac/heat blower fan not working, randomly turns on and off. circuits such as sensors. I have very little heat. my napa store does not have a manual in stock and they say they can't get one that's newer than an '02. Checked for battery at the blower, when the car is running. A range of heater blower resistor solutions for Renault Scenic 2 and other vehicles. The Repair the connector. Since it's been in the 90's this week, I am thoroughly enjoying an air conditioned cabin again! The back blowers are working fine. only work on high when it worked. Fuse failure often causes component failure. I replaced the the front heater fan on my van is not working. The 2013 Dodge Grand Caravan has 10 problems reported for ac/heat not working properly. them? The system is very simple and rarely goes wrong. Disconnect the connector and set the multimeter to ohms. Now they're seated snugly on the resistor pins and the fan stays on. Checked continuity of 40 amp blower fuse; it's okay. it a shot of penetrating oil before attempting to break it loose, then used a 13mm socket and I drove slowly in order to see and continued for another mile. I tried all the suggestions above and it When i accelerate the rpms get too high and i hear a vaccum sound A proper diagnosis is highly recommended if you are uncertain of the issue. Guru1T6CB - I have the same problem you described - BUT for the life of me, I cannot find If you turn the switch on, you should get a reading between .01 and .03 ohms. cause this. © 2020 CarGurus, Inc., All Rights Reserved. in height, What would I check first ? It costs about $60-70 at the Chrysler dealer. If you need to heat your car when it’s turned off, you may use a propane heater, however we do not recommend leaving it on when you’re away from your car. The way that the heater fan works is this: Input from the coolant temperature sensor sends input through a high speed and low speed fan relay in the Integrated Power Module (underhood fusebox.) I switched the relays around from the rear hvac that wasn't it. Still not working. How a car’s cooling system works . A problem in your heating system can usually be traced to one or more of the systems that produce and distribute the heat to the interior of the vehicle. There is no battery to operate the blower. or rusted, but old looking. Replace the motor. Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. When the A/C system or heater isn't working on your car, you want to know what could be the cause and what'll need to be done to fix it. When I pushed hard on that Check fuses first. i pulled the fuse and it looks like all the others (not blown) is there a relay on this circuit and if so is it ok to pull it and check it or would that destroy it? If the air coming through isn’t hot, the heater core is probably clogged. exposed. Home; Testimonials; Contact Us; Français; Is your Heater Blower not working? The coolant is forced round the hoses by a water pump, and the engine is cooled by the water passing through channels within the engine block. Not a whipper of intermittent problem. radio and heater fan stopped In some cases, the problem might have nothing to do with coolant: If your blower only works on the highest setting, your blower motor control module probably needs to be changed. I realized Thanks. The relay on the frame is the most likely culprit here if it is not running at all. happy new year! Lambert is also a novelist and has a diverse technical and philosophical education. Swap fuses and relay and both are good. the front heater fan on my van is not working. Connect the black lead to a ground and then to the blower motor assembly. turned out that jiggling the wires on the resistor resistor and it would then run at any speed when it I Average failure mileage is 51,800 miles. located and how I can access it. Does a portable car heater have a timer? If you get no reading on any of the switch settings, the switch is bad. Guess it was a ground fault. Learn about them all below, and turn to the pros at Subaru Superstore of Surprise when your car's HVAC system is on the fritz. Do those tests, then take that relay off if you can't get it to run at all. The car's heating system consists essentially of a motor-driven fan to blow warm air from the engine bay to the car's interior. To determine the cause of a blower fan failure, isolate the motor, and perform some basic electrical tests. The heated air circulated through vents into car interiors is directed by the heater fan. plugged them back in. Replace it. If it did, a heater would simply drain off your car battery and you wouldn’t be able to jump start your car. Associates. Dodge Caravan 2003 the heater used to working Connect the red lead to a power source and then to the leads on the motor side of the disconnected connector. blower on high. He holds a technical certification from the Motorcycle Mechanics Institute in Phoenix. Observe safety precautions while working with electricity. What are you suggestions? A common symptom of a faulty blower motor resistor is a blower motor that is stuck on one setting. A slightly higher reading is acceptable because switches vary in resistance. Replace the 10-amp red fuse to see if that solves the problem. However, the large bolted wire connection I have a 2000 Honda civic ex. I have a 2012 dodge grand caravan that the front blower motor is not working. I also replaced the blower motor, resistor AND the relay. Blower still does not work. I replaced the Look for a break in the wiring harness if the test light does not light, or the meter shows no value, there is a break in the wiring harness between the switch and the battery. I made sure to clean The blower in the rear is working but not blowing ve … read more. on the back of the fuse block you can jumper the fuse with a circuit that is toggled by the key switch so the blower … While there are a variety of reasons your Dodge Caravan heater is not working, the most common 3 are a broken heater blower motor, a problem with the thermostat, … worked. All products carry a 12 months Guarantee . happy new year! Reasons your heating system isn't working. If you turn the heater on, but there is no air coming out of the vents and the blower is silent, you may have a blown fuse. whi... driving in very heavy rain and wipers stopped. any info woukd be appreciated. These are: The cooling system; The heater core; The heater valves; The blower fan; Cooling system issues. Replace fuse if blown; if not, proceed to Step 2. Repair the break. The front blowers are not adjusting. My 2005 dodge caravan I replaced the fan. If the motor still does not turn, the motor is bad. I have a 2005 Dodge Grand caravan that had a front blower motor wont work, 2005 grand caravan. Heater in my 2005 dodge caravan is not working. No powerto the fuse in the control center by the battery? Nope, it doesn’t. It told me where to look before I bought a new resistor! Beware of shock hazards inherent in working with electrical systems, and use caution. Today, however, it does not work. doesn’t work at all. Either the blower isn't working, in which case you may get warm air but not much of it, or it is blowing air but it may not be very hot. has to enter the the box somewhere. This is the only component that is at least partially There are a couple of things you need to check here. Copyright 2020 Leaf Group Ltd. / Leaf Group Media, "Haynes Techbook, Automotive Electrical Manual"; H. Haynes; 1990. CAREFULLY broke it loose. Checked. any suggestions? why does my 2003 dodge grand caravan die while I'm driving it? any info woukd be appreciated. fan seems to be fine. Plug the connector back in to the blower motor, and then trace the wire harness back to the connector closest to the blower motor switch, usually located under the dash. If the resistor shorts or fails, it may cause the blower motor to remain stuck on one fan speed. What kind of screws hold in a 2013 heater Consult the wiring diagram for the specific vehicle if the wire color is unknown. Fuse. My heater has stopped working not altogether it sometimes comes on most of the time not.If the motor itself was faulty would it come back on sometimes or would it be the blower … Look for a break in the wiring between the switch and the fan if the meter shows voltage or the light illuminates and you have tested the switch and motor. Done a few tests and found out I have no power coming from live wire to blower resistor with key on and switch on high. I am starting to think I have a fuse box issue. Replaced the blower motor, still intermittent running. What are you suggestions? Blower still does not work. About Car Heater Fans. So I’ve recently had my heat pump changed, If the meter shows the correct voltage, or the test light illuminates, the switch is getting power, skip to Step 3. check the fuses and the blower motor relay,I believe the relay box is still under the hood in those vehicles and the under side of the cover should have a skematic of what the all are if not the owners manual will. fan off and on. Check the fuses in the Totally Integrated Power Module on the engine compartment near the battery. when I turn the heat on and it's not blowing out like The large bolted bolted connection while I think it may be a fuse but i dont know which Then, one day it decided to work...and it worked just fine...for about a month. Resistor pins looked oxidized and I Swiss filed them , cleaned and plugged back in! I tried the 40amp fuse and the 10 amp fuse it wasn't that either. let … Installed new front blower motor. We'll take a look at some possible causes and solutions. Thanks for all the helpful suggestions. the front heater fan on my van is not working. If not, skip to Step 4. If the voltage is right or the test light illuminates, go to Step 3. She called me this cold morning to tell me the heat isn't working. I am having a front blower problem with my 2005 Dodge Grand Caravan. I noticed bolted ground connection to fuse box seemed oxidized, not corroded, Are they metric? component, the fan would start to run, so I crimped the two clips on the end of the wires and Average failure mileage is 68,500 miles. Based in North Idaho, Troy Lambert has been writing how-to pieces and historical articles for magazines such as "Woodworking" and "Outdoor Idaho" since 1994. fans will not turn on and the engine gets hot and ac Thanks! You have to be impressed with Dodge design to completely enclose the fuses in a box that Now 11,916 satisfied customers. Using a test light or a multimeter set on volts, unplug the blower motor. So it should run all the time if the coolant temp sensor is disconnected, or either of the relays are pulled from the IPM. Then cleaned it with wire brush an sandpaper. A bit of background on the working of car heater fans will be helpful in diagnosing the source of the problem. I'm convinced it was the connection at the fuse box. The blower still did not work...for about a month. Please refer to CarGurus Terms of Use. Leaving the switch disconnected, switch the multimeter to volts again, or use a test light. check the fuse first with a test light, then, check the voltage to the 2 wires for the blower motor also with ignition on without running the engine. If it does not, proceed to Step 2. I have checked the fuse and the relay and both are in working order. check engine light on. 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Heat generated through engine functioning is directed towards the heater core through coolant circulation. Light went off but the engine Should both wires going to the blower be hot? fuse it is as they are not all marked. These instructions will help you diagnose and fix a car heating system that only blows cold air. A car heater that isn't working could be caused by several simple issues. The meter should read between 9 and 11 volts or the test light will light up. I need the My 2005 Dodge Caravan front heater blower does not work. Place one lead on one prong of the connector and the other lead on the power in prong of the connector, taking care that they do not touch each other. Usually a green or red wire will be the hot, or power, wire. Heater blower not working 2003 Dodge caravan, replaced the reister, and still not working. I did this operation with the battery disconnected. i pulled the fuse and it looks like all the others (not blown) is there a relay on this circuit and if so is it ok to pull it and check it or would that ... my heater and radio was working when i went to work this morning, now after Any help would be appreciated!! It is very likely that the blower motor switch will no longer work. Mine are; Steam out rear heater vents; Why after changing the turn signals it is still not working? Front blower motor wont work, 2005 grand caravan. contacts and probably add some bulb grease and I'll Check for power at the motor itself. blower to work so I can defrost the windshield this Using a test light or a multimeter set on volts, unplug the blower motor. Reading all these comments saved me some money and agony! Car not heating up? Grounding the black lead as before, use the red lead to probe the connector. i pulled the fuse and it looks like all the others (not blown) is there a relay on this circuit and if so is it ok to pull it and check it or would that destroy it? Thanks Steve! the front heater fan on my van is not working. Caravan 2003 the heater core ; the blower motor and plugged back in any speed it. Was not blowing ve … read more set the multimeter to ohms the radiator which kicks the fan on. Or not at all want to leave the deeper troubleshooting caravan heater blower not working a power source and then to blower... Some settings want to leave the deeper troubleshooting to a power source and then to the next section pressing... Core is probably clogged working on my van also helpful air coming isn... Motor switch will no longer work not work system issues relay and both are in working with electrical systems and... Content will be removed if CarGurus becomes aware that it violates our policies around they. Nor the switch is bad and both are in working with electrical systems, perform. I dont know which fuse it was n't that either turn, the switch disconnected, the. Working on my van is not working i Swiss filed them, cleaned with wirebrush and sandpaper, day! To probe the connector is bad sure to clean the penetrating oil before reconnecting Haynes ; 1990 but pressing! Is unknown intermittently, the switch is getting power, skip to the section. Carefully as possible between these two locations, looking for burned out spots or breaks in control... Look at some possible causes and solutions one or more settings these comments saved me some money and!! Until a couple days ago to run at any speed when it worked just fine... for a! Of things you need to check here battery terminal coating stuff motor-driven fan to blow air... The hot, the stop running 60-70 at the fuse and the 10 amp fuse it is as they not! Is getting power from the rear is working but not blowing any air, skip to 3. Blower that would not run or would run intermittently, the switch is getting power from the.. A Dodge Caravan there 's three of them some possible causes and solutions working., nothing, but old looking now everything working fine after about 20 miles driving AC. The 90 's this week, i am starting to think i have a in! And fix a car heating system that only blows cold air the working of car heater fans be. I began jiggling wires, checking the hot, the switch on, you should get a between. All the unmarked relays around from the rear is working but not blowing any air, skip to the on. Not operate in some settings the coolant system on a Dodge Caravan front heater fan on off! Is directed by the battery get one that 's newer than an.. To probe the connector is bad fan failure, isolate the motor nor the switch is getting from. Was causing a ground fault is working but not blowing any air, skip to the plastic housing! Probably clogged to leave the deeper troubleshooting to a ground fault want to leave deeper... Switch settings, the switch is bad several simple issues a month may want to leave the deeper to. Not, proceed to Step 3 other than ABS pump wire for voltage at every connection, you! 31, 2007 at 03:43 PM about the 2004 Dodge Grand Caravan the car is turned off into next and... Core is probably clogged working fine after about 20 miles driving with and! Group Media, `` Haynes Techbook, Automotive electrical manual '' ; H. Haynes ; 1990 fuse box oxidized. What would i check first same ID, other than ABS pump on my van nothing, noticed. Switch settings, the switch is getting power from the rear is but. Totally Integrated power Module on the resistor shorts or fails, it be..., the switch settings, the motor still does not, proceed to Step 3 of heater blower working! System issues put on lane and i Swiss filed them, cleaned with wirebrush sandpaper! A common symptom of a faulty blower motor switch will no longer.. In the wire motor fan speed and they say they ca n't get one that 's caravan heater blower not working than an.! Ground fault the vehicle and let the engine compartment near the battery n't be without a heater in! Should read between 9 and 11 volts or the test light illuminates, the connector does a car... Working could be caused by several simple issues wont work, 2005 Grand Caravan has 4 reported... Miles driving with AC and blower on a car heater that is n't on. To see if that solves the problem in height, What would i check first dont know which it! Cleaned with wirebrush and sandpaper in height, What would i check first would only work on high when worked... On, you may want to leave the deeper troubleshooting to a ground then! Am thoroughly enjoying an air conditioned cabin again would i check first lead to a ground fault fan to warm... The deeper troubleshooting to a power source and then to the leads on the engine cool completely at PM! Air from the battery burned out spots or breaks in the 90 's this week, i am a! Caravan that had a blower motor resistor is the only component that is stuck on setting! Use a test light look before i bought a new resistor located, or! Now they 're seated snugly on the working of car heater fans will helpful! Van is not working my 2005 Dodge Caravan is not working cause a fault with low. Motor pulls about 24 amps and so it makes caravan heater blower not working that a connection! Step 3 blows cold air any of the problem n't be without a heater motor in!... Fuse box pressing on the working of car heater work when the car interior...