Service Procedure

1. Open both driver and passenger side doors.

2. Install memory saver module, then disconnect battery negative cable.

3. Drain cooling system.

4. Using Heater Hose Disconnect Tool (T85T-18539-AH), disconnect and plug heater hoses from the heater core.

5. Remove inside engine cover.

6. Remove passenger side instrument panel finish panel.

7. Remove driver side instrument panel finish panel.

8. Remove passenger side instrument panel finish panel reinforcement.

9. Remove passenger side instrument panel dash brace.

10. Remove top instrument panel retaining screws.

11. Remove upper left access panel.

CAUTION:
IF THIS NUT IS REMOVED COMPLETELY, PROBABLE DAMAGE TO COMPONENTS WILL OCCUR FROM INSTRUMENT PANEL FALLING.

12. Loosen instrument panel-to-main bracket retaining nut.

13. Remove instrument panel-to-center finish panel retaining bolts.

14. Slightly raise the instrument panel, then place a 38.1 mm thick by 101.6 mm long by 101.6 mm wide (1-1/2"x4"x4") block of wood on the right front portion of the engine cover opening. This will hold the instrument panel in a raised position.

15. Remove RH kick panel from the engine cover side.

16. Remove heater case cover.

17. Remove heater core.

18. Disconnect the door temperature blend actuator wiring.

19. Remove heater case assembly.

20. Install revised Heater Case Assembly (F7UZ-18478-CA).

21. Transfer temperature blend door actuator to revised heater case assembly.

22. Reverse Steps 1-19 for installation of the revised heater case assembly. Tighten instrument panel bolt to 2-3 N.m (18-27 lb-in).