Honda CR-V: Heater Unit/Core Replacement

SRS components are located in this area. Review the SRS component locations, and the precautions and procedures before doing repairs or service.

1. Make sure you have anti-theft codes for the audio system and the navigation system (if equipped).

2. Make sure the ignition is OFF, then disconnect the negative cable from the battery.

3. Disconnect the A/C line from the evaporator core.

4. When the engine is cool, drain the engine coolant from the radiator.

5. From under the hood, slide the hose clamps (A) back. Disconnect the inlet heater hose (B) and the outlet heater hose (C) from the heater unit. Note the orientation of the hose.

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.

Honda CR-V. HVAC (Heating, Ventilation, and Air Conditioning)

6. Remove the mounting nut from the heater unit.

Take care not to damage or bend the fuel lines or brake lines, etc.

Honda CR-V. HVAC (Heating, Ventilation, and Air Conditioning)

7. Remove the dashboard.

8. Disconnect the connector (A) from the blower motor. Remove the wire harness clip (B).

Honda CR-V. HVAC (Heating, Ventilation, and Air Conditioning)

9. Disconnect the connector (A) from the recirculation control motor.

Honda CR-V. HVAC (Heating, Ventilation, and Air Conditioning)

10. Disconnect the connectors (A) from the mode control motor, the evaporator temperature sensor, and the power transistor. Remove the wire harness clips (B).

Honda CR-V. HVAC (Heating, Ventilation, and Air Conditioning)

11. Disconnect the connectors (A) from the air mix control motor and A/C wire harness. Remove the connector clip (B), the wire harness clips (C), and the wire harness (D).

Honda CR-V. HVAC (Heating, Ventilation, and Air Conditioning)

12. Remove the clip (A) and the duct (B). Side the clamp, then remove the drain hose (C). Remove the mounting bolt, mounting nuts, and blower-heater unit (D).

Honda CR-V. HVAC (Heating, Ventilation, and Air Conditioning)

13. Remove the self-tapping screws and the driver's duct (A). Remove the self-tapping screws, the heater core cover (B), the grommet (C), and carefully pull out the heater core (D).

Honda CR-V. HVAC (Heating, Ventilation, and Air Conditioning)

14. Install the heater core and the evaporator core in the reverse order of removal.

15. Install the heater unit in the reverse order of removal, and note these items:

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