The availability of schematics will depend on a few variables including the year of your vehicle and how much of the vehicle is factory original. For original equipment schematics, check your local auto parts stores for repair books for your specific vehicle published by companies such as Chilton's or Haynes.
Yes, a Dodge Neon has a coolant temperature sensor.
Trouble code P0443 means:Evaporative emission control system purge control valve circuit malfunction
Trouble code P0627 means: Fuel Pump Control Circuit / Open
Trouble code P0573 means:Cruise control/brake switch A circuit high
Trouble code P0627 means: Fuel Pump Control Circuit / Open
Trouble code P0508 means: Idle control system circuit low
Trouble code P0508 means: Idle control system circuit low
Trouble code P1388 means:Auto shut down ASD relay control circuit
It has to do with the speed control vacuum circuit in the cruise servo.
Trouble code P0403 means: Exhaust Gas Recirculation Control Circuit
Trouble code P0449 means: Evaporative Emission System Vent Control Circuit Intermittent
A dodge neon does not have a heater valve. The inside temp is adjusted with an airflow control door inside the dash.