Subaru Outback: Heater and Cooling Unit
A: REMOVAL
1) Disconnect the ground cable from battery.
2) Using the refrigerant recovery system, discharge refrigerant. <Ref. to AC-24, PROCEDURE, Refrigerant Recovery Procedure.>
3) Drain the coolant from the radiator.
- H4 non-turbo model: <Ref. to CO(H4SO)-14, DRAINING OF ENGINE COOLANT, REPLACEMENT, Engine Coolant.>
- H4 turbo model: <Ref. to CO(H4DOTC)-14, DRAINING OF ENGINE COOLANT, REPLACEMENT, Engine Coolant.>
- H6 model: <Ref. to CO(H6DO)-12, DRAINING OF ENGINE COOLANT, REPLACEMENT, Engine Coolant.>
4) Remove the connector and bolts, and remove the high-pressure hose and AC pipe from the expansion valve.
5) Loosen the heater hose clamps and remove the hoses.
6) Remove the instrument panel assembly. <Ref. to EI-76, REMOVAL, Instrument Panel Assembly.>
7) Remove the engine control module (ECM).
- Release the lock and remove the relay holder.
- Remove the nuts, and remove the engine control module (ECM).
8) Remove the heater and cooling unit.
- Remove the bolt and remove the heater and cooling unit.
9) Remove the blower motor unit assembly.
- Release the claws and remove the bolts.
- Remove the blower motor unit assembly as shown in the figure.
B: INSTALLATION
CAUTION:
- Do not start the engine before charging refrigerant.
- If the engine is started with no refrigerant charge, replace the compressor.
- Replace O-rings and pipe clamps with new parts and install securely.
1) Install each part in the reverse order of removal.
NOTE: Refer to "INSTALLATION" of "Instrument Panel Assembly". <Ref. to EI-95, INSTALLATION, Instrument Panel Assembly.>
2) Fill engine coolant.
- H4 non-turbo model: <Ref. to CO(H4SO)-14, FILLING OF ENGINE COOLANT, REPLACEMENT, Engine Coolant.>
- H4 turbo model: <Ref. to CO(H4DOTC)-14, FILLING OF ENGINE COOLANT, REPLACEMENT, Engine Coolant.>
- H6 model: <Ref. to CO(H6DO)-12, FILLING OF ENGINE COOLANT, REPLACEMENT, Engine Coolant.>
3) Charge refrigerant. <Ref. to AC-25, PROCEDURE, Refrigerant Charging Procedure.>
Tightening torque:
Heater cooling unit: <Ref. to AC-6, HEATER COOLING UNIT, COMPONENT, General
Description.>
Blower motor unit: <Ref. to AC-8, BLOWER MOTOR UNIT, COMPONENT, General
Description.>
READ NEXT:
Evaporator
A: REMOVAL
1) Disconnect the ground cable from battery.
2) Using the refrigerant recovery system, discharge refrigerant. <Ref. to AC-24,
PROCEDURE, Refrigerant
Recovery Procedure.>
3) Drain t
Expansion Valve
A: REMOVAL
1) Disconnect the ground cable from battery.
2) Using the refrigerant recovery system, discharge refrigerant. <Ref. to AC-24,
PROCEDURE, Refrigerant
Recovery Procedure.>
3) Remove
Pressure Sensor
A: INSPECTION
1) Perform a diagnosis code (DTC) check by connecting the Subaru Select
Monitor.
2) If any diagnosis code (DTC) is displayed, refer to "List of Diagnostic
Trouble Code (DTC)" in "HVAC
SEE MORE:
Unfastening the rear center seatbelt
Push the release button of the center seatbelt buckle (on the left-hand side)
to unfasten the seatbelt.
1. Insert a key or other hard pointed object into the slot in the connector (buckle)
on the right-hand side and push it in, and the connector (tongue) plate will disconnect
from the b
Relay and Fuse
A: LOCATION
NOTE:
For other related fuses, refer to the wiring diagram. <Ref. to WI-15, Power
Supply Circuit.>
B: INSPECTION
1. CHECK FUSE.
1) Remove the fuse and check visually.
2) If the fuse is blown out, replace the fuse.
2. CHECK RELAY
1) Check the resistance between relay terminals.
