Heater Core: Service and Repair

HEATER CORE AND/OR MODE DOOR





Removal
1. Disconnect the battery ground cable.
2. Drain the engine coolant.
3. Discharge and recover refrigerant (with air conditioning). Service and Repair
4. Remove heater unit.
5. Remove duct.
6. Remove case (Mode control) and do not remove link unit at this step.




7. Remove case (Temperature control) separate two halves of core case.




8. Remove heater core.




9. Pull out the mode door while raising up the catch of the door lever.

Installation
To install, follow the removal steps in the reverse order, noting the following point:
- Check that each door operates properly.

Inspection
Check for foreign matter in the heater core, stain or the core fin defacement.