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2004 Chrysler Pacifica AC

Tiny
TPGOINS
  • MEMBER
  • 2004 CHRYSLER PACIFICA
  • 120,000 MILES
I just replaced the blower motor resistor. The air blows strong but I can not change the fan speeds. It always blows on high. Also, when I turn the ac off the blower will not shut off. It blows down by the floorboard. What could be causing this?
Wednesday, July 10th, 2013 AT 11:15 AM

8 Replies

Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
In IPM box next to BATT remove cover find blower relay remove does fan stop running
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Wednesday, July 10th, 2013 AT 11:51 AM
Tiny
TPGOINS
  • MEMBER
  • 5 POSTS
Yes when I remove the blower relay the blower shuts off
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Wednesday, July 10th, 2013 AT 2:54 PM
Tiny
TPGOINS
  • MEMBER
  • 5 POSTS
When I put the relay back on the fan starts again
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Wednesday, July 10th, 2013 AT 3:00 PM
Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
PCM controls relay via integrated power by providing ground to relay to close and operate fan. A circuit diagnosis will need to be done to find fault so do you have a DVOM?
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Thursday, July 11th, 2013 AT 8:47 AM
Tiny
TPGOINS
  • MEMBER
  • 5 POSTS
Mine broke but I can get a new one. Once I get one, what are the steps I need to take to diagnos?
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Thursday, July 11th, 2013 AT 9:07 AM
Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
Will check for ground signal from AC control head to blower if the driver is grounded as I suspect then control head faulty
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Thursday, July 11th, 2013 AT 9:14 AM
Tiny
TPGOINS
  • MEMBER
  • 5 POSTS
I am new to this. Where is the ac control head? I really appreciate all your help with this.
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Thursday, July 11th, 2013 AT 12:08 PM
Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
Thing you push/switch ect to operatr AC /heat
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Thursday, July 11th, 2013 AT 12:27 PM

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