Home ReviewsRefund
Home/Acura/RL/Acura RL II рестайлинг (2008-2012)/Repair manual/HVAC (heating, Ventilation & Air Conditioning)/Heater Unit/Core Replacement
Contents Section: HVAC (heating, Ventilation & Air Conditioning) All sections

Heater Unit/Core Replacement Acura RL II рестайлинг

HVAC (heating, Ventilation & Air Conditioning) 12 illustrations ~751 words

Heater Unit/Core Replacement

SRS components are located in this area. Review the SRS component locations (see COMPONENT LOCATION INDEX ) and the precautions and procedures (see PRECAUTIONS AND PROCEDURES ) before doing repairs or service.

Scheme 134

Scheme 134: Heater Unit/Core Replacement
Scheme 134: Heater Unit/Core Replacement

Scheme 135

Scheme 135
Scheme 135

Scheme 136

Scheme 136
Scheme 136

Scheme 137

Scheme 137
Scheme 137

Scheme 138

Scheme 138
Scheme 138

Scheme 139

Scheme 139
Scheme 139

Scheme 140

Scheme 140
Scheme 140

Scheme 141

Scheme 141
Scheme 141

Scheme 142

Scheme 142
Scheme 142
  1. Do the battery terminal disconnection procedure (see «BATTERY TERMINAL DISCONNECTION AND RECONNECTION»(/acura/rl/ii-2008-2012/remont/body-electrical/#battery) ).
  2. Disconnect the A/C lines from the evaporator core (see «EVAPORATOR CORE REPLACEMENT»(/acura/rl/ii-2008-2012/remont/automatic-hvac-system/#hvac-heating-ventilation-air-conditioning) ).
  3. 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.
  4. When the engine is cool, drain the engine coolant from the radiator (see «COOLANT CHECK»(/acura/rl/ii-2008-2012/remont/cooling-system-mechanical/#cooling-system) ).
  5. Slide the hose clamps (A) back. Remove the bolt and the 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.
  6. Remove the mounting nut from the heater unit. Take care not to damage or bend the fuel lines and the brake lines, etc.
  7. Remove the dashboard (see «DASHBOARD REPLACEMENT»(/acura/rl/ii-2008-2012/remont/exteriorinterior-trim/#dashboard) ).
  8. Disconnect the connectors (A) from the adaptive front lighting control unit, the electronically controlled power steering control unit, and the daytime running lights control unit. Remove the relay (B), the bolt, and the self-tapping screws, then remove the bracket (C).
  9. Disconnect the connectors (A) from the driver's cool vent control motor, the driver's air mix control motor, the mode control motor, and the evaporator temperature sensor, then remove the wire harness clips (B).
  10. Disconnect the connectors (A) from the blower motor, the power transistor, the control motor relay, the throttle actuator control module subharness, and the dashboard wire harnesses. Remove the self-tapping screw (B), the connector clip (C) and the wire harness clips (D).
  11. Disconnect the connectors (A) from the recirculation control motor, the passenger's cool vent control motor, the passenger's air mix control motor, and the rear vent control motor, and then remove the wire harness clip (B) and the wire harness (C).
  12. Remove the clips (A), the mounting nuts, and the blower-heater unit (B).
  13. Remove the self-tapping screws and the passenger's heater duct (A), then remove the expansion valve cover (B), the bolts, and the expansion valve (C). Remove the self-tapping screws, the joint duct (D), and the heater core cover (E). Remove the self-tapping screws, the heater pipe brackets (F), and the grommets (G), then carefully pull out the heater core (H).
  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: Do not interchange the inlet and the outlet heater hoses, and install the hose clamps securely. Refill the cooling system with engine coolant (see «COOLANT CHECK»(/acura/rl/ii-2008-2012/remont/cooling-system-mechanical/#cooling-system) ). Adjust the heater valve cable (see «HEATER VALVE CABLE ADJUSTMENT»(/acura/rl/ii-2008-2012/remont/automatic-hvac-system/#hvac-heating-ventilation-air-conditioning) ). Make sure that there is no coolant leakage. Make sure that there is no air leakage.
  16. Do the battery terminal reconnection procedure (see «BATTERY TERMINAL DISCONNECTION AND RECONNECTION»(/acura/rl/ii-2008-2012/remont/body-electrical/#battery) ).

Scheme 143

Scheme 143: Heater Valve Cable Adjustment
Scheme 143: Heater Valve Cable Adjustment

Scheme 144

Scheme 144
Scheme 144

Scheme 145

Scheme 145
Scheme 145
  1. From under the hood, open the cable clamp (A), then disconnect the heater valve cable (B) from the heater valve arm (C).
  2. From under the dash, disconnect the heater valve cable housing from the cable clamp (A), and disconnect the heater valve cable (B) from the air mix control linkage (C).
  3. Set the temperature control button to Max Cool (Lo) with the ignition switch to ON (II).
  4. Attach the heater valve cable (B) to the air mix control linkage (C) as shown in step 2. Hold the end of the heater valve cable housing against the stop (D), then snap the heater valve cable housing into the cable clamp (A). NOTE: Make sure the ring-end of the cable is pushed all the way to the base of the pin on the air mix control linkage.
  5. From under the hood, turn the heater valve arm (A) to the fully closed position as shown, and hold it. Attach the heater valve cable (B) to the heater valve arm, and gently pull on the heater valve cable housing to take up any slack, then install the heater valve cable housing into the cable clamp (C).