Yes it does at the end of the count down. This is a video of my truck starting-up this morning. I'm just really excited that it started up at all because in these temps, my 6.0 just plain won't, and the 7.3L takes a liberal spraying of a can of 'quick start' to get going. High Pressure Common Rail vs. Hydraulic-Electronic Unit Injector design I guess. And working glow plugs.

6.7L PSD Warm-Up Countdown - YouTube

Accelerator pedal is disabled during the count down.