Headlights System Description: Flash-to-Pass
WARNING: This page is about a different car, the 2013 Honda Fit, 2012 Honda Fit, 2011 Honda Fit, 2010 Honda Fit, and 2009 Honda Fit. However, it is still accessible from the selected car via links, so may be relevant.
When you pull the dimmer/flash-to-pass switch to the passing position, a ground signal is supplied to under-dash fuse/relay box (MICU) connector M (34P) terminal No. 4. The MICU then energizes the high beam control circuits for as long as the switch is held, supplying battery voltage to the high beam headlights, turning them on.