Operation CHARM: Car repair manuals for everyone.
Home >> Scion >> 2004 >> xA L4-1.5L (1NZ-FE) >> Repair and Diagnosis >> Heating and Air Conditioning >> Heater Core >> Service and Repair

Heater Core: Service and Repair

Heater Radiator Assy Part 1:




Heater Radiator Assy Part 2:




Instrument Panel/Meter Part 1:




Instrument Panel/Meter Part 2:




Instrument Panel/Meter Part 3:






HEATER RADIATOR ASSY

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 ASSY
SST 09870-00015
3. DISCONNECT LIQUID TUBE SUB ASSY A
SST 09870-00025




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

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

HINT: Disconnect of the heater water outlet hose A (from heater unit) is the same way as the heater water inlet hose A.

6. REMOVE INSTRUMENT PANEL SUB ASSY W/PASSENGER AIRBAG ASSY

HINT: Refer to the instructions for removal of the instrument panel sub assy w/passenger airbag assy.

7. REMOVE INSTRUMENT PANEL SUB ASSY LOWER W/HEATER DUCT

HINT: Refer to the instructions for removal of the instrument panel sub assy lower w/heater duct.

8. REMOVE ECM
9. REMOVE AIR CONDITIONING BLOWER ASSY
10. REMOVE AIR CONDITIONING AMPLIFIER ASSY




11. REMOVE DEFROSTER NOZZLE ASSY
a. Remove the clip.
b. Disengage the 2 claws and remove the defroster nozzle assy




12. REMOVE INSTRUMENT PANEL BRACE SUB ASSY NO.1
a. Disconnect the wire harness.
b. Remove the 4 bolts, the nut and instrument panel brace sub assy No.1.




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




14. REMOVE AIRMIX DAMPER CONTROL CABLE SUB ASSY
a. Disconnect the outer cable.
b. Disconnect the inner cable and remove the airmix damper control cable sub assy.




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

16. DISCONNECT AIR DUCT REAR NO.1

HINT: Disconnection of the air duct rear No.1 is the same as that of the air duct rear No.2.
17. REMOVE HEATER RADIATOR ASSY
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 assy.




18. REMOVE AIR DUCT ASSY
a. Disengage the 4 claws and remove the air duct assy.




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




20. REMOVE THERMISTOR ASSY
a. Disengage the claw and remove the clamp.
b. Remove the thermistor assy.

21. REMOVE HEATER RADIATOR UNIT SUB ASSY




a. Remove the 5 screws and the cooler wiring No.2.




b. Remove the screw and the bracket.
c. Disengage the clamp and disconnect the connector.
d. Remove the heater radiator unit sub assy.




22. INSTALL DEFROSTER DAMPER CONTROL CABLE SUB ASSY
a. Set the arm in the FACE position in.
b. Install the inner cable end to the control lever with the arm in the FACE position.
c. Install the outer cable in 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 control & accessory assy 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.




23. INSTALL AIRMIX DAMPER CONTROL CABLE SUB ASSY
a. Set the arm in the MAX.COOL position.
b. Install the inner cable end in the control lever with the arm in the MAX.COOL position.
c. Install the outer cable in 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 control & accessory assy operation may be affected.

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

24. INSTALL ECM
25. INSTALL INSTRUMENT PANEL SUB ASSY LOWER W/HEATER DUCT
26. INSTALL INSTRUMENT PANEL SUB ASSY W/PASSENGER AIRBAG ASSY
27. INSTALL LIQUID TUBE SUB ASSY A
28. INSTALL SUCTION HOSE SUB ASSY
29. ADD COOLANT
30. CHARGE REFRIGERANT
SST 07110- 58060 (07117-58060, 07117-58070, 07117-58080, 07117-58090, 07117- 78050, 07117-88060, 07117-88070, 07117-88080)

Specified amount: 460 ± 30 g (16.2 ± 1.1 oz.)

31. WARM UP ENGINE
32. CHECK FOR ENGINE COOLANT LEAKS
33. INSPECT LEAKAGE OF REFRIGERANT
pro multis · About Operation CHARM