Cool Box Control Switch ON Operation
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2017 Honda Odyssey, 2016 Honda Odyssey, 2015 Honda Odyssey, 2014 Honda Odyssey, and 2013 Honda Odyssey. However, it is still accessible from the selected car via links, so may be relevant.
When the cool box switch is on, the shut valve opens and the indicator light in the switch comes on. If the A/C compressor is not currently operating, the shut valve remains open to allow cool air to enter the cool box.