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SUVs Honda Pilot Honda Pilot Air Conditioning Problems
24 messages, Last post on Oct 18, 2009 at 5:52 PM
You are in the Honda Pilot Forum. Your Hosts are steve_ & tidester
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Replying to: leo41 (Jul 10, 2008 8:43 pm) Your reply is just what I was hoping for, a solution that was not obvious but works. I dropped down the glove box and I see a small black electrical relay box or something way over to the right by the side of the access opening. Could that be it? Looks like maybe a relay. Also I see a vertical black plastic removable panel to left of center of the opening which I suspect has the cabin air filter behind it. I'll have to remove a horizontal steel bar though first to get it out. And I see another foam air filter looking at me which is visible and I guess is the recirculating air filter. Any other tips? Thanks again. |
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| The piece I replaced was close to the back of the floor board. It had 4 screws to remove it and the cord that was attached to the resistor plugs in the stationary mount like lego's. The biggest pain was removing/replacing the 4 screws on the resistor and replacing the glove box. I would strongly suggest putting new cabin air filters in--it does make difference in the air quality. If a honda dealer/mechanic or someone from autozone can show you exactly where the piece is, that would be the way to go. | |
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Thankyou. I found the unit OK. It is on the bottom of the blower unit. I found the following link online if someone else has the same trouble: Q. My question has not been addressed.... The question is... I have a 2004 Honda EX Pilot. the a/c has stopped blowing. The blower works intermittently and when it blows it only blows out of the back unit. I have checked all fuses and they are all working. When the A/C kicks in it does blow cold air. Edited by Customer (name blocked for privacy) on June 29 2008 at 7:20pm A. Does the air blow out the front vents on high speed or full auto? Sounds like the power resistor for the front blower motor is bad. There is a way to test it to see if its definately bad. Here is how: 1. Carefully release the lock tab on the No. 3 terminal (ORN/BLK) (A) in the 5P connector, then remove the terminal and insulate it from body ground. 1. Reconnect the 5P connector to the power transistor. 2. Supply 12 volts to the No. 3 cavity with a jumper wire. 3. Turn the ignition switch ON (II), and check that the blower motor runs. o If the blower motor does not run, replace the power transistor. o If the blower motor runs, the power transistor is OK. --- I did this test and apparently the transistor is blown since the motor did not run. |
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The part I changed (Front Air Blower Resistor) is made by the same Japanese manufacturer as the original (Denso) [umm not the brainiest company name] and is pretty much identical except that it has 4 cooling fins instead of two. For others of you with the same problem, O'Reilley's Auto Parts here in Minnesota shows the part on their computer and it was special ordered for $56 plus $7 shipping. Took 4 days. The new part is from BWD Engine Management Technology of NY state, part #RU 1044 "Resistor", says the box. O'Reilley's also has the pollen air filter for $20. Thanks, leo41. |
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Honda service bulletin 03-048 relates to problem. Cause is Open circuit in the power transistor Looking for replacement for Power Transistor as local dealer does not stock it. Price is  $150.00 Is there a place to buy?
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Replying to: powley (Jul 31, 2008 12:29 pm) http://www.hondapartsdeals.com/ |
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Replying to: leo41 (Jul 10, 2008 8:43 pm) I have a 2003 Honda Pilot. Although these symptoms similarly relate, I wanted to clarify. As with the other gentleman, my ac stopped blowing cold air on start up. The control panel appears to work fine and I can adjust what appears to be the back A/C only. No air is felt from the front vents regardless of the control settings selected. I was a little confused on the part that needed to be replaced as I only had three screws holding my unit in place. It sounds as if the part is the same one based on the description in these posts. Mine was visibly white on the side that can be viewed under the dash and had a integrated plug. I wanted to make sure with the symptoms I am seeing I will be replacing the correct part. I was reading the email below regarding how to test the blower to figure out if it is operational or not and that also lead to some confusion for me. Is there a way to test the transistor to find out if it is bad? Thanks, Chris
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Replying to: chrisv1 (Sep 01, 2008 6:34 am) Yes my original front blower resistor was whitish or beige- gray on the visible side as installed. It is sitting at the bottom of the ductwork facing downward, very close to the firewall in the passenger side foot area. And yes, I think there were three screws, not four. I unscrewed and popped down the resistor, used a VOM and did the test and mine failed the test. Then I bought the replacement resistor over the Internet (driving around for a few days without A/C or a glove compartment, and it worked great. But make sure to clean out the accessible ductwork of all dust and leaves and junk with a vacuum and replace the pollen filter too. Hope this helps. Todd |
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http://www.hondaautomotiveparts.com/auto/jsp/mws/prddisplay.jsp?inputstate=5&cat- cgry1=PILOT&catcgry2=2003&catcgry3=5DR+EXL&catcgry4=KL5AT&catcgry5=HEATER+BLOWER-
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Replying to: piealot (Sep 01, 2008 7:17 am) There seems to be a clip on both sides holding the white plug into the black part of the transistor, and I can't get those clips loose at the same time. Thanks, Kim
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