Where's the rack and pinion relay location

This system is complex and requires proper diagnostic testing and troubleshooting to correctly repair. Since your safety and the safety of everyone on the road is involved, I'd strongly recommend seeking professional guidance for this concern. I assure you that nothing as simple as a "failed relay" will be causing your lack of steering. When a consumer asks a question like this, it is clear that it is not in the best interest to try and explain system operation and diagnostic process. If you had a diagnostic tool capable of reading chassis codes and monitoring chassis component operations, you'd also have access to shop manuals that could give you locations for each component of the system as tested. I'm hopeful you'll seek professional guidance.