does it start? what have you done to it? Now that its warmer.. Take a 12v jumper to the fuel pump test connector to see if your pump works. If it does then crank the motor over with the key. If it dosent start listen for the click under your dash. if it dosent click then its the mpi relay. if it does click then it may be frozen fuel lines. But I would def check the cts cause if it dosent start today.. then that might be your problem.

Unless a mouse chewed your wires. It does happen.