I have an 89 honda accord lxi. It's hitting about 90 degrees where I live and in this weather it seems that the door ajar chime goes off every time I brake. Once it gets cooler it stops, or if I accelerate. I can hear something move in the door jamb whenever I brake, but it seems to be within the frame of the car, not just the rubber door jamb moving. If I could just disable the beep by pulling a fuse or disconnecting a wire I would but doesn't seem to be a specific wire or fuse for the door ajar chime. Any ideas?

 

Look at the wiring for the door switch. That probably operates by closing a ground connection when the door is open. Look for some worn wiring that touches ground when the wire moves one way or another.