2004 Accord Electrical Problems

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Jun 13, 2018 | 10:47 PM

timmyb1985

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2004 Accord Electrical Problems

I have a 2004 Accord LX 2.4 M/T with 170k miles. The other day my AC was not working (blowing warm air). I tried swapping the relays under the hood to squash that possibility. I found that my AC pressure sensor located on the condenser had a small leak around the o-ring which I replaced. Charged up with Freon and the AC worked great. I then noticed that my radiator cooling fan and condenser fan only worked when the fan speed control was off. When I turned on the fan speed to any of the settings, both fans came on at the same time and ran until I turned the fan speed dial to off. I then disconnected the battery in hopes to reset the ECU over night. The next morning I hooked the battery back up and now I have no power to the fan speed, vent selector, ac button or the rear defroster. I checked all fuses and relays with no luck. Also, neither of my cooling fans are coming in. I then replaced the blower motor resistor and still no luck. Any thoughts on what can be going on? thank you in advance.

Last edited by timmyb1985; Jun 14, 2018 at 04:24 AM.

Jul 1, 2018 | 11:59 AM

David Langford

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Joined: Jul 2018

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Re: 2004 Accord Electrical Problems

Hello there, I am going through a very similar issue at the momement. I hopped on the forum for answers and found your post. I'm not a Honda tech... But I seemed to have found a short to ground that's affecting my cooling fans ac compressor and daytime running lights ect... it's too hot outside so I took a break, but I'm going to chase this one wire....its a black/yellow wire.you can find it off of the blower transistor plug. I followed it into behind the radio and disconnected a connector that shared that same black/yellow wire. When it cools off I'm going to try and chase it further. So far an end at transistor is off and the plug in center off but the wire is still live. I believe we could share the same problem with slightly different symptoms.

Jul 9, 2018 | 01:18 PM

David Langford

Honda-Tech Member

Joined: Jul 2018

Posts: 6

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Re: 2004 Accord Electrical Problems

Timmyb please ignore everything I posted before. I cut my wire harness when I ran power cord for my amp. Sorry if I ended up misleading you on a goose chase.