2010 Fit Sport Sayama Plant

I got into a wreck where the right side took the impact. The Side airbag deployed only. The seat belts did not lock up and no other airbag deployed. There was some bumper damage but its easily mended.

I have been able to install a new side curtain airbag. The battery has been disconnected for 48+hours.

My problem is that the workshop manual says to replace both impact sensors for that side as well as the belt sensor for that side in addition to having the SRS reprogramed. Also the only system warning light that was on before I started repairs was the airbag indicator on the dash console.

Do i need the impact sensor?
Do I need the Belt sensor?
Can I reprogram the SRS with an OBD reader and clear the codes?
Is there something Im missing?
Got any advice?

Thanks in advance!!!