The bus is the communication system between computers on the car. No bus means the system is not functioning. Possible causes include fuses, wiring, or any of the modules on the car.
If you are looking for a reset switch, Chrysler does not use those.
Start with 4.5 and check the dipstick.
Start and stall out, possibly. Not start at all, not likely.
engine have spark and fuel pressure and still will not start
No you do not.
If the old part had failed, yes.
Because you didn't charge the battery.
YesYes
Hook the battery charger to the jump start posts under the hood.
You don't. That can cause a fire and internal engine damage.
maybe the batterie is not charged
you may want to get the battery checked or get the ingition looked at