Heater Core: Service and Repair

Heater Radiator Assy Part 1:

Heater Radiator Assy Part 2:

OVERHAUL

1. DISCHARGE REFRIGERANT FROM REFRIGERATION SYSTEM
SST 07110-58060 (07117-58080, 07117-58090, 07117-78050, 07117-88060, 07117-88070, 07117-88080)

2. DISCONNECT SUCTION HOSE SUB-ASSEMBLY
SST 09870-00015

3. DISCONNECT LIQUID TUBE SUB-ASSEMBLY A
SST 09870-00025




4. DISCONNECT HEATER WATER INLET HOSE A
a. Using pliers, engage the claws of the clip and slide the clip and disconnect the heater water inlet hose A.

5. DISCONNECT HEATER WATER OUTLET HOSE A (FROM HEATER UNIT)

HINT: Disconnect in the same way as for the heater water inlet hose A.

6. REMOVE HEATER CONTROL KNOB
7. REMOVE INSTRUMENT CLUSTER FINISH PANEL SUB-ASSEMBLY CTR
8. REMOVE INSTRUMENT PANEL SUB-ASSEMBLY W/PASSENGER AIRBAG ASSEMBLY

HINT: Refer to the instructions for removal of the instrument panel sub-assembly w/passenger air bag assembly.

9. REMOVE INSTRUMENT PANEL ASSEMBLY LOWER W/INSTRUMENT PANEL REINFORCEMENT

HINT: Refer to the instructions for removal of the instrument panel assembly lower w/instrument panel reinforcement.




10. REMOVE DEFROSTER NOZZLE ASSEMBLY
a. Remove the clip.
b. Disengage the 2 claws and remove the defroster nozzle assembly.

11. REMOVE ECM
12. REMOVE AIR CONDITIONING BLOWER ASSEMBLY




13. REMOVE DEFROSTER DAMPER CONTROL CABLE SUB-ASSEMBLY
a. Disconnect the outer cable.
b. Disconnect the inner cable and remove the defroster damper control cable sub-assembly.




14. REMOVE AIRMIX DAMPER CONTROL CABLE SUB-ASSEMBLY
a. Disconnect the outer cable.
b. Disconnect the inner cable and remove the air mix damper control cable sub-assembly.




15. DISCONNECT AIR DUCT REAR NO.2
a. Disconnect the air duct rear No.2.

16. DISCONNECT AIR DUCT REAR NO.1

HINT: Disconnect in the same way as for the air duct rear No.2.

17. REMOVE HEATER RADIATOR ASSEMBLY
a. Disconnect the 3 connectors.




b. Remove the bolt and separate the earth bolt from the PTC heater.




c. Remove the 2 nuts and the heater radiator assembly.




18. REMOVE AIR DUCT ASSEMBLY
a. Disengage the 4 claws and remove the air duct assembly.




19. REMOVE HEATER COVER
a. Remove the screw.
b. Disengage the 2 claws and remove the heater cover.




20. REMOVE COOLER WIRING NO.2
a. Remove the 5 screws and the cooler wiring No.2.




21. REMOVE THERMISTOR ASSEMBLY
a. Disengage the claw and remove the clamp.
b. Remove the thermistor assembly.




22. REMOVE HEATER RADIATOR UNIT SUB-ASSEMBLY
a. Remove the screw and the bracket.
b. Remove the clamp and disconnect the connector.
c. Remove the heater radiator unit sub-assembly.




23. INSTALL DEFROSTER DAMPER CONTROL CABLE SUB-ASSEMBLY
a. Set the arm in the FACE position.
b. Install the inner cable end to the control lever with the arm in the FACE position.
c. Install the outer cable to the cable clamp while slightly pressing it in the direction of the arrow.

NOTE:
- Be careful not to bend the cable wire.
- If the cable wire bends, the heater or boost ventilator control operation may be affected.

HINT: Operating the mode control lever, check that it properly stops at both ends of FACE and DEF and no recoil is identified.




24. INSTALL AIRMIX DAMPER CONTROL CABLE SUB-ASSEMBLY
a. Set the arm in the MAX. COOL position.
b. Install the inner cable end to the control lever with the arm in the MAX. COOL position.
c. Install the outer cable to the cable clamp while slightly pressing it in the direction of the arrow.

NOTE:
- Be careful not to bend the cable wire.
- If the cable wire bends, the heater or boost ventilator control operation may be affected.

HINT: When operating the mode control lever, check that it properly stops at both ends of MAX. HOT and MAX. COOL and no recoil is identified.

25. INSTALL ECM
26. INSTALL INSTRUMENT PANEL ASSEMBLY LOWER W/INSTRUMENT PANEL REINFORCEMENT
27. INSTALL INSTRUMENT PANEL SUB-ASSEMBLY W/PASSENGER AIRBAG ASSEMBLY
28. INSTALL INSTRUMENT CLUSTER FINISH PANEL SUB-ASSEMBLY CTR
29. INSTALL HEATER CONTROL KNOB
30. INSTALL LIQUID TUBE SUB-ASSEMBLY A
31. INSTALL SUCTION HOSE SUB-ASSEMBLY
32. ADD ENGINE COOLANT
33. CHARGE REFRIGERANT
SST 07110-58060 (07117-58060, 07117-58070, 07117-58080, 07117-58090, 07117-78050, 07117-88060, 07117-88070, 07117-88080)

Specified amount: 380 ± 30 g (13.9 ± 1.1 oz.)

34. WARM UP ENGINE
35. CHECK FOR ENGINE COOLANT LEAKS
36. INSPECT LEAKAGE OF REFRIGERANT