Exactly what do you mean?
I assume the car does not crank, or cranks but doesn't start?
Does your vehicle have PKIII or PassLock(check owner'* manual) for a Security system?
If PKIII, when you turn the key to on, don't crank, does the SECURITY/THEFT LIGHT go out after 3 seconds?
Has the vehicle been scanned for "P" and "B" and "U" codes?
What "procedures" have you tried?