Acura TSX / Honda Accord CL. Manual — part 677

Fig. 119: Pulling Out The Evaporator Core And The Plate

6. Install the core in the reverse order of removal, and note these items.

z

If you're installing a new evaporator core, add refrigerant oil (KEIHIN SP-10) (see A/C
Refrigerant Oil Replacement ).

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Replace the O-rings with new ones at each fitting, and apply a thin coat of refrigerant oil before
installing them. Be sure to use the correct O-rings for HFC-134a (R-134a) to avoid leakage.

z

Immediately after using the oil, reinstall the cap on the container, and seal it to avoid moisture
absorption.

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Do not spill the refrigerant oil on the vehicle; it may damage the paint; if the refrigerant oil contacts
the paint, wash it off immediately.

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Make sure that there is no air leakage.

z

Charge the system (see SYSTEM CHARGING ).

HEATER UNIT/CORE REPLACEMENT

SRS components are located in this area. Review the SRS component locations, and the precautions and
procedures in the SRS section before performing repairs or service. See AIR BAG RESTRAINT SYSTEMS .

1. Make sure you have the anti-theft codes for the radio and the navigation system, then write down the

frequencies for the radio's preset buttons.

2. Disconnect the negative cable from the battery.

3. Disconnect the suction and receiver lines from the evaporator core (see EVAPORATOR CORE

REPLACEMENT )

4. From under the hood, open the cable clamp (A), then disconnect the heater valve cable (B) from the

heater valve arm (C). Turn the heater valve arm to the fully opened position as shown.

2004 Acura TSX

2004 AUTOMATIC A/C SYSTEMS Climate Control System - TSX

Fig. 120: Disconnecting The Heater Valve Cable

5. When the engine is cool, drain the engine coolant from the radiator (see COOLANT

REPLACEMENT ).

6. Slide the hose clamps (A) back. Remove the bolt and water valve bracket, then disconnect the inlet heater

hose (B) and the outlet heater hose (C) from the heater unit. Engine coolant will run out when the hoses
are disconnected; drain it into a clean drip pan. Be sure not to let coolant spill on the electrical parts or the
painted surfaces. If any coolant spills, rinse it off immediately.

2004 Acura TSX

2004 AUTOMATIC A/C SYSTEMS Climate Control System - TSX

Fig. 121: Disconnecting The Inlet Heater Hose & The Outlet Heater Hose From The Heater Unit

7. Remove the mounting nut from the heater unit. Take care not to damage or bend the fuel lines and the

brake lines, etc.

2004 Acura TSX

2004 AUTOMATIC A/C SYSTEMS Climate Control System - TSX

Fig. 122: Removing The Mounting Nut From The Heater Unit

8. Remove the dashboard (see DASHBOARD ).

9. Remove the footrest and the footrest bracket.

10. Disconnect the connectors (A) from the driver's air mix control motor, the evaporator temperature sensor,

the power transistor, the mode control motor, passenger's air mix control motor, and the recirculation
control motor, then remove the wire harness clips (B), the connector clips (C) and the wire harness (D).
Remove the heater ducts (E). then remove the mounting nuts and the blower-heater unit (F).

2004 Acura TSX

2004 AUTOMATIC A/C SYSTEMS Climate Control System - TSX