It can be downloaded from here, in Adobe Acrobat form: http://techinfo.toyota.com/public/main/2ndprius.pdf Document is designed for emergency response teams having to deal with a crashed Prius. However, it's full of excellent data and illustrations on the Prius' electrical system, airbags, even what the VIN numbers for the '04 Prius are. Surprisingly good, slightly-more-technical-than-average overview of the Prius.
