ignition switch isn't part of the PATS(passive anti-theft system) so wouldn't effect starting because of PATS, ignition switch is under the steering column.
Starter motor circuit also requires clutch pedal to be in all the way(clutch switch) or the automatic trans to be in Park or Neutral(NSS switch) for the starter to work.
Was the Key switch replaced?
This switch has a wire "ring" on it that reads a PATS key and sends that info to PATS module, if the "ring" was not connected or new key switch doesn't have the "ring" then you will need to hook it up or get a new key switch that has the wire "ring".
There is no way to bypass PATS easily or cheaply, that is the point of an anti-theft system.
Last edited by RonD; 05-18-2014 at 11:15 AM.