Automatic Temperature Control (ATC)

1. Disconnect battery ground cable, then discharge refrigerant from A/C system and disconnect lines from evaporator heater assembly.
2. Drain cooling system, then disconnect and plug heater hoses from evaporator heater assembly.
3. Remove A/C condensate drain and disconnect vacuum lines.






4. On all models, slide front bench seat or right front bucket seat back as far as possible.








5. On all models, remove right cowl side trim.





6. On all models, remove glove box. If necessary, remove right instrument panel reinforcement to allow glove box removal.







7. On Aries and Reliant models, remove floor console.




8. On Aries, Reliant, Shadow and Sundance models, pull lower right side of instrument panel rearward.






9. On all models, remove center distribution and defroster adapter ducts.








10. On Aries and Reliant, remove audible message center, then the brace securing right side cowl to plenum.










11. On all models, disconnect blower motor electrical connector, then the demister hoses from top of evaporator heater assembly.






12. On models with automatic temperature control, disconnect instrument panel wiring harness from rear of ATC unit.





13. On all models, unfasten antenna cable from clip on evaporator heater assembly.










14. On all models except Dynasty, Lancer, LeBaron GTS and New Yorker, fold carpet back from right side of floor.




15. On all models, remove four evaporator heater assembly attaching nuts from engine compartment side.




16. Remove lower screw from hanger strap, then rotate the strap aside.
17. Pull evaporator heater assembly rearward until mounting studs are cleared, then lower unit.









18. On all models except Acclaim, Shadow, Spirit and Sundance, pull lower right side of instrument panel rearward and rotate assembly while pulling from under instrument panel.








19. Place evaporator heater unit on bench, then remove evaporator heater unit top cover.
20. Remove expansion valve seal and retaining screw from under sealing plate, then lift evaporator core out of assembly.
21. Reverse procedure to install.