RSX L4-2.0L (2005)
Heater Core: Service and Repair
Heater Unit/Core Replacement
SRS components are located in this area. Review the SRS component locations, and the precautions and procedures before performing repairs or service.
1. Turn the ignition switch ON (II).
2. Turn the mode control dial to the floor vent position. This will prevent the mode control doors from being damaged when the dashboard is
removed.
3. Turn the ignition switch OFF.
4. Make sure you have the anti-theft code for the radio, then write down the frequencies for the radio's preset buttons.
5. Disconnect the negative cable from the battery.
6. Disconnect the suction and receiver lines from the evaporator core.
7. 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.
8. When the engine is cool, drain the engine coolant from the radiator
9. Slide the hose clamps (A) back, then disconnect the inlet heater hose (B) and the outlet heater hose (C) from the heater core. 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.
10. Remove the mounting bolt and the heater valve as shown.
