How to do Fan mod for 2nd Gen Hybrid battery fan with Torque Pro

With Torque Pro I don't know, too.
But with Hybrid Assistant you can let the fan blow at full speed or automatically when the battery temp sensor reaches a chosen high level until it drops some degrees below it for cooling purposes. For warm up in cold winter days there is a function, too.

 

Yeah... I have the same problem with Torque pro... Not just fan control, but the Pids for Prius voltage and resistance for 14 hybrid pack books are out of order/typos and it's the number one comment in the Android Play Store with 38 thumbs up yet the creator of the app [email protected] (aka: Ian Hawkins) has gone dark and hasn't updated anything since last May. Seems like he's no longer servicing the app, let alone replying to emails sent to him or comments/concerns, just raking the money in till people realize his app is broken and outdated/no longer supported. Hybrid Assistant is what I'm gonna try next...

 

I'm using Torque Pro, too. And it's fine.
But the PIDs aren't part of the app. Some are included, but most of CAN-BUS informations are secret. Luckily many of the PIDs of the Prius got leaked and are known now. Try these here

 

Tapatalk has problems with the link, so look here
Gen2 Prius: Custom PIDs for Torque (Android App) with formulas | PriusChat