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fuse for heater is 30 amp and a 10 amp relay found behind a small removable panel in dash and also there is a 10 amp a/c fuse in fuse box under hood of car
REMOVE HEATER BLOWER MOTOR AND HOT WIRE IT.IF HEATER BLOWER MOTOR WORKS WHEN HOT WIRED EITHER BLOWER RELAY BAD OR AC AND HEATER CONTROL SWITCH NOT WORKING.IF BLOWER DONT WORK WHEN HOT WIRED BLOWER MOTOR IS BAD.
switch. Use a 12 volt test light at the resistor connector. Take connector off resistor, check the brown/orange stripe wire for 12 volts--is it hot? if yes, connect your test light clip to that terminal and probe the other terminals. Orange/black wire terminal should light up with setting on high. Black wire terminal should light on any setting, etc.
If brown wire with orange stripe is not hot, check fuse 9.
If fuse 9 is OK, problem may be in the mode selector switch.
See diagram and let me know if you have any questions.
check to see if there is a resistor on the blower motor. it should be located either beside or underneath the blower motor.. if that is bad it wont let you select different fan speed settings and if it goes completely out the blower will not work at all.
OK, history would be nice. What a/c do you have, Manual or Auto/Electronic? All Speeds? Why did you replace the motor. If the fuses are ok, did you check for power at the motor? if it has power and ground, it HAS TO WORK, or the motor is bad. If you did not check for power, then if you have Manual A/C, Turn blower switch to HIGH SPEED, check the PURPLE wire (at the motor), if it does not have power, then check RED wire at the BLOWER RELAY. The RED wire should be HOT AT ALL TIMES. If the Red Wire is HOT but the Purple wire is not, then check the ORANGE wire at the blower relay, it should be hot (if the orange wire is not hot you may have a bad blower switch ). If the RED and Orange wires are hot, then the relay may be bad, You can by- pass the relay to see if all is ok but connecting the RED AND PURPLE WIRES. The blower should run at high speed. I dont want to look at the Electronic A/C, its more complicated and I dont want to waste time if thats not what you have.
IT COULD BE BLOWER MOTOR NOT GROUNDED.YOUR BLOWER MOTOR FUSE AND RELAY COULD BE BAD.MAKE SURE POWER IS GOING TO BLOWER.MOTOR.CHECK TO SEE IF POWER IS GOING TO SWITCH IF SO SWITCH COULD BE BAD.HOT WIRE BLOWER MOTOR USING JUMPER WIRE AND POWER FROM THE BATTERY.IF BLOWER MOTOR WORKS.YOU HAVE FUSE RELAY AND SWITCH PROBLEM.MOST THE TIME WHEN RESISTOR BAD.YOUR BLOWER MOTOR ONLY WORK ONE SPEED SOME TIME.
Either Your fan switch is burned out or you blower motor is no good, your blower motor is on the passenger side under the dash. Before you replace any parts you need to check your fuses and relays under your hood and in the car. Usually if your fan switch goes bad you will still get some air blowing thru the vents, so my guess would be blower motor, If its not a blown fuse or relay.
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