Housing Assembly HVAC: Service and Repair

HEATER & COOLING UNIT ASSEMBLY


Removal and Installation


COMPONENTS











REMOVAL
1. Discharge the refrigerant from the A/C system. HFC-134A (R-134A) Service Procedure.
2. Drain the engine coolant from the cooling system. Changing Engine Coolant(QR25DE), Changing Engine Coolant (VQ35DE).
3. Disconnect the negative and positive battery terminals.
4. Remove the wiper motor and linkage. Service and Repair.
5. Remove the cowl top. Removal And Installation Coupe (coupe), Removal And Installation Sedan (sedan).
6. Remove the strut tower bar. Exploded View.
7. Remove the lower RH cowl. Removal And Installation Coupe (coupe), Removal And Installation Sedan (sedan).
8. Disconnect the heater hoses from the heater core pipes.

CAUTION:
Cap or wrap the pipe joint with a suitable material such as vinyl tape to avoid the entry of contaminants into the system.
9. Disconnect the refrigerant lines from the expansion valve. Component.

CAUTION:
Cap or wrap the line joint with a suitable material such as vinyl tape to avoid the entry of contaminants into the system.
10. Remove the instrument panel assembly. Removal And Installation Instrument Panel.
11. Remove the steering column assembly. Removal And Installation.
12. Disconnect the drain hose.
13. Remove the heater and cooling unit assembly attached to the steering member as one assembly from the vehicle.
14. Remove the blower unit from the heater and cooling unit and steering member assembly.
15. Remove the heater and cooling unit from the steering member.

INSTALLATION
Installation is in the reverse order of removal.
- Fill the radiator with the specified water and coolant mixture.
- Recharge the A/C system. HFC-134A (R-134A) Service Procedure.