My fan for my a/c -heater stopped working.Is it a fuse issue,wiring,or control module?

There could be a few potential causes for this issue. One possibility is that the motor for the fan is worn out or faulty, causing it to cut off at the highest speed. Another possibility is that there is an issue with the electrical connection or the fan control module.
Here are a few steps you can take to troubleshoot and potentially resolve the issue:

1. Check the fuse: Locate the fuse box in your car and check if the fuse related to the fan or HVAC system is blown. Replace it if necessary.
2. Inspect the fan motor: Open the hood and locate the fan motor. Visually inspect it for any signs of damage or wear. If you notice any issues, such as a broken fan blade or worn-out motor, it may need to be replaced.
3. Test the motor: Disconnect the electrical connector from the fan motor. With the car turned on, use a multimeter to test if there is power going to the motor when the fan is set to the highest speed. If there is power, but the fan still cuts off, the motor may need to be replaced.
4. Check the fan control module: The fan control module is responsible for regulating the fan speed. It is typically located near the fan motor. Check for any signs of damage or loose connections. If necessary, replace the control module.

If you are unsure or uncomfortable performing these steps yourself, it is recommended to consult a professional mechanic who can diagnose and fix the issue with your AC/heater fan.

There are several possible reasons why your blower, vent, defrost, AC, and heater might stop blowing air:

1. Blower Motor Failure: The blower motor is responsible for blowing the air through the vents. If the blower motor fails, you will not get any airflow from the vents.
2. Blower Motor Resistor Failure: The blower motor resistor controls the speed of the blower motor. If the resistor fails, the blower motor may stop working or only work at one speed.
3. Fuse or Relay Failure: A blown fuse or faulty relay in the blower motor circuit can prevent the blower motor from working.
4. Control Module Failure: The HVAC (heating, ventilation, and air conditioning) control module is responsible for controlling the blower motor and other components. If the control module fails, it can prevent the blower motor from working.
5. Vacuum Leak: If your vehicle uses a vacuum system to control the vents, a vacuum leak can prevent the system from working properly.
6. Broken Blend Door: The blend door controls the direction of the airflow. If the blend door breaks or gets stuck, the air may not flow through the correct vents.
7. Wiring or Connector Issues: Faulty wiring or connectors in the blower motor circuit can prevent the blower motor from working.

• engine dead?
• car can not drive.?
• battery dead
• fuse blown
• starter dead
• jumper cable starts work?

Hyundai Matrix - fuse box - engine compartment (gasoline) DescriptionAmpere rating [A]Protected components ALT120Generator B+40(A/CON, RR HTD, STOP, D/LOCK, HAZARD) Fuse ECU30Generator, Engine control relay, ECM RAD20Radiator fan relay IGN40Start relay, Ignition switch BLR40Blower relay P/WIN30Power window relay COND20Condenser fan relay #1 ABS30ABS control module, ABS bleeding connector ABS30ABS control module, ABS bleeding connector F/PUMP10Fuel pump relay INJ15Injector, lgnition coil SNSR10MAP sensor, Oxygen sensor, CP sensor, Knock sensor, Throttle position sensor ROOM LP10Audio, Room lamp, Overhead console lamp, lnstrument cluster DRL15DRL control module HORN10Horn relay A/CON10A/C relay FR FOG15Front fog lamp relay ECU10ECM, TCM LP20Tail lamp relay TAIL LH10Left rear combi lamp, Left position lamp, Left License lamp TAIL RH10Right rear combi lamp, Right position lamp, Right License lamp H/LP LH15Left head lamp H/LP RH15Right head lamp, (H/LP IND) Fuse Engine compartment (diesel) Hyundai Matrix - wiring diagram - fuse box diagram - engine compartment (diesel) DescriptionAmpere rating [A]Protected components FUSEALT100Generator B+40(A/CON, RR HTD, STOP, D/LOCK, HAZARD) Fuse, Deicer ECU30Generator, Engine control relay, ECM RAD20Radiator fan relay IGN40Start relay, Ignition switch BLR40Blower relay P/WIN30Power window relay COND20Condenser fan relay #1 ABS30ABS control module, ABS bleeding connector ABS30ABS control module, ABS bleeding connector F/PUMP10Fuel pump relay ECU30ECM No.5 (Batt+) ECU10ECM No.4 (Batt+), Stop lamp switch, PTC heater relay #1 SNSR10Glow plug relay, Assistor heater relay 1/2, Stop lamp switch, TDC sensor, EGR act, Throttle plate act, VGT vacuum ROOM LP10Audio, Room lamp, Overhead console lamp, lnstrument cluster, ETACS, Luggage lamp DRL15DRL control module HORN10Horn relay A/CON10A/C relay FR FOG15Front fog lamp relay ECU10ECM, TCM LP20Tail lamp relay TAIL LH10Left rear combi lamp, Left position lamp, Left License lamp TAIL RH10Right rear combi lamp, Right position lamp, Right License lamp H/LP LH15Left head lamp H/LP RH15Right head lamp, (H/LP IND) Fuse FUSIBLE LINKPTC HTR 140PTC heater relay #1 GLOW80GLOW relay PTC HTR 240PTC heater relay #2 FFHS30FFHS relay PTC HTR 340PTC heater relay #3 Inner Panel Hyundai Matrix - fuse box - inner panel DescriptionAmpere rating [A]Protected components H/LP IND10Head lamp indicator HTD IND10Defogger relay, Left(Right) outside mirror motor, Rear window motor A/CON10A/C Switch RR HTD30Defogger relay STOP10Stop lamp switch, Power window relay D/LOCK15Door lock(unlock) relay, ETACM, Sunroof relay HAZARD10Burglar alarm relay, Hazard relay AUDIO10Audio C/LIGHT15Cigarette lighter A/B10SRS control module A/B IND10SRS IND. T/SIG10Hazard switch, Seat belt timer, Instrument cluster, ABS control module, Pre-excitation resistor, Washer motor ECU15ECM, Vehicle speed sensor, TCM, Ignition coil ETACS10ETACM, A/T Shift lever RR WPR10Rear wiper motor, Rear wiper relay START10Start relay FRT WPR20Wiper relay, Washer motor, Wiper & Defogger timer S/HTD15Left (Right) front seat warmer switch P/OUTLET25Front (Rear) power outlet IG210ETACM, Power window relay, Defogger relay, Sunroof relay Head lamp relay, Blower relay O/S MRR10Outside mirror switch, Rear fog lamp relay

There is a resistor in the fan circuit to give you different speeds and it burns out. It's down by the fan on most cars.

check HVAC fuse.if fuse okay heater control module could be the problem.

The fan motor should be on the left side firewall where the heater housing is..it looks like a round cup on a plate that almost is octagonal...usually it has a violet wire going to it..this is the +12 volts lead coming from the resistor module..the resistor module controls the different speeds for the fan assembly..the resistor is a commonly failed component and will caus the fan to stop working...the resistor is on the heater housing near the fan and has a multi-pin connector on it ..it is held in the housing w/2-4 screws....you can get a length of wire and unplug the violet lead from the fan and hook the length of wire to the lug where you unplugged the fan to the positive battery terminal...don't worry about ground as the fan is automatically grounded thru the case of the fan..if the fan comes on the fan is ok and your problem is most likely the resistor assembly...just to be on the safe side...make sure the heater fuse is ok..i would hate to see you go thru all this work just to find out the fuse is bad or the socket the fuse goes in is loose

The fuse for heater/ac fan is number 36.30 amp located end of dash
If this is ok,you need to replace heater control module behind heater controls.Save money buy haynes manual,check e bay

The blower motor relay is stuck, holding the curcit engauged. Look under the hood, find the conveinence center, where you will find fuses and relays (read the cover, see if one says AC/Heater blower relay), if not, look in your car's manual, to see where this relay is located. When you find it, pull it out, see if the moter stops, if ti does , replace it.