2005 Hyundai Elantra diagnose heater blower motor or resist

Tiny
DEVODELL
  • MEMBER
  • 2005 HYUNDAI ELANTRA
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 80,000 MILES
Procedure for testing heater blower motor and its resistor to determine if one or both need replacement? Also procedure and degree of difficulty to replace one or both parts?
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Friday, August 28th, 2009 AT 9:07 AM

5 Replies

Tiny
KHLOW2008
  • EXPERT
Hi devodell,

Thank you for the donation.

Can you explain to me what the problem is so I can understand the situation and be in a better position to assist you.
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Friday, August 28th, 2009 AT 10:53 AM
Tiny
DEVODELL
  • MEMBER
When turn the blower/fan speed control past 2 it blow the 30amp fuse. Also headlites seem to burn out very often 3-4 times a year, could there be a common problem causing or contributing to both problems, such as a faulty overcharging/spiking alternator?
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Friday, August 28th, 2009 AT 11:19 AM
Tiny
KHLOW2008
  • EXPERT
Does the fuse blows when fan speed is low or 2nd?
Does the AC or heater system work correctly?
Is your AC system manual or auto control?

Both problems should be separate matters. Headlight bulbs requiring frequent replacement could be due to quality of bulb used.
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Saturday, August 29th, 2009 AT 9:56 AM
Tiny
DEVODELL
  • MEMBER
All works fine on 1 or 2, but go to 3 or 4 and blow s a fuse.
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Sunday, August 30th, 2009 AT 8:50 PM
Tiny
KHLOW2008
  • EXPERT
Here are the schematics for the AC system.


http://www.2carpros.com/forum/automotive_pictures/192750_ACManual05ElantraFig03a_1.jpg




http://www.2carpros.com/forum/automotive_pictures/192750_ACManual05ElantraFig03b_1.jpg



From the schematics, the resistor is after the blower motor and any fault with the resistor should not affect the fuse. The more likely fault would be the fan motor.

You can test fan motor by using a fused wire to apply voltage to the fan motor to check if the fuse blows.
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Monday, August 31st, 2009 AT 2:02 AM

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