I replaced the ignition switch in my 2004 Pilot. I am using the original key, original immobilizer, and original key/lock sensor. The vehicle started, ran for about five second, and shut off. Now it cranks over but won't start. There is not a flashing green key light. The ACG S 15 amp fuse is not blown. The vehicle cranks, but won't start with the key fob, either. Where do I start to troubleshoot?