I have a 1992 Honda Accord DX with 120,000 miles and I have been having issues with the rear defogger.
I have checked all the fuses, replaced the defroster relay, replaced the switch, the bulbs in the switch, and replaced the ICU 3 TIMES!
The reason I have replaced it 3 times is because when I put a new one in the intermittent wipers turn on, and then the defrost doesn’t work.
The other interesting thing is when I take it back out the icu smells like burnt electronics, so I’m thinking something is overloading the ICU but I just don’t know what that could be!
I also took it to a shop and they said that there was power coming out of the fuse box but I don’t know why it isn’t working…
If there are any older Honda experts out there that could throw me a bone I would be really grateful.
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