SUBARU TRIBECA 2009 1.G Service Workshop Manual

AC-35
Heater and Cooling Unit
HVAC SYSTEM (HEATER, VENTILATOR AND A/C)
16.Heater and Cooling Unit
A: REMOVAL
1. FRONT
1) Disconnect the ground cable from battery.
2) Using the refrigerant recovery system, dis-
charge refrigerant. Refrigerant Recovery Procedure.>
3) Drain engine coolant from the radiator.
4) Remove the bolts securing expansion valve and
pipe in engine compartment. Release the heater
hose clamps in engine compartment to remove the
hoses.
5) Remove the instrument panel. REMOVAL, Instrument Panel Assembly.>
6) Remove the support beam.
7) Remove the blower motor unit assembly. to AC-26, REMOVAL, Blower Motor Unit Assem-
bly.>
8) Disconnect the actuator connector.
9) Remove the bolt and nuts and remove the heat-
er and cooling unit.
2. REAR
1) Disconnect the ground cable from battery.
2) Using the refrigerant recovery system, dis-
charge the refrigerant. DURE, Refrigerant Recovery Procedure.>
3) Remove the quarter trim. MOVAL, Rear Quarter Trim.>
4) Remove the bolts, then disconnect the rear tube.
5) Disconnect the harness connector.
6) Remove the nuts, then remove the cooler unit.
B: INSTALLATION
1) Install in the reverse order of removal.
2) Charge refrigerant. DURE, Refrigerant Charging Procedure.>
Tightening torque:
Refer to “COMPONENT” of “General Descrip-
tion”. UNIT, COMPONENT, General Description.>
AC-01294
AC-01295

AC-36
Evaporator
HVAC SYSTEM (HEATER, VENTILATOR AND A/C)
17.Evaporator
A: REMOVAL
1. FRONT
1) Using the refrigerant recovery system, dis-
charge refrigerant. Refrigerant Recovery Procedure.>
2) Disconnect the ground cable from battery.
3) Remove the blower motor unit assembly. to AC-26, REMOVAL, Blower Motor Unit Assem-
bly.>
4) Disconnect the connector, remove the screw
and then remove the air-mix door actuator and
mode door actuator.
5) Remove the bolts holding the expansion valve,
and remove the expansion valve.
6) Remove the screws and pull out the evaporator.
7) Remove the pipe cover from the evaporator.
8) Remove the bolt which holds the pipe to evapo-
rator, and remove the evaporator.
CAUTION:
If the evaporator is replaced, add an appropri-
ate amount of compressor oil to the evaporator.
Oil.>
2. REAR
1) Using the refrigerant recovery system, dis-
charge the refrigerant. DURE, Refrigerant Recovery Procedure.>
2) Disconnect the ground cable from battery.
3) Remove the rear cooler unit. REMOVAL, Heater and Cooling Unit.>
4) Remove the pipe bracket bolts and remove the
bracket.
AC-01296
AC-01298
AC-01300
AC-01317
AC-01299
AC-01343

AC-37
Evaporator
HVAC SYSTEM (HEATER, VENTILATOR AND A/C)
5) Remove the screws, and then remove the cooler
unit.
6) Remove from the cooler unit and disconnect the
tube from the evaporator.
CAUTION:
If the evaporator is replaced, add an appropri-
ate amount of compressor oil to the evaporator.
Oil.>
B: INSTALLATION
Install in the reverse order of removal.
CAUTION:
Route the cord (A) of the evaporator through
the location shown on the illustration.
(A) Code
AC-01344
AC-01320
(A)

AC-38
Hose and Tube
HVAC SYSTEM (HEATER, VENTILATOR AND A/C)
18.Hose and Tube
A: REMOVAL
CAUTION:
•When disconnecting/connecting hoses, do
not apply an excessive force to them. After in-
stalling, check that no torsion or excessive ten-
sion applied to the hoses.
•Seal the disconnected hose with a plug or vi-
nyl tape to prevent foreign matter from enter-
ing.
1. FRONT
1) Disconnect the ground cable from battery.
2) Using the refrigerant recovery system, dis-
charge refrigerant. Refrigerant Recovery Procedure.>
3) Remove the evaporator unit mounting bolt (A)
and low-pressure hose bracket bolt (B).
4) Remove the low-pressure hose attaching bolts
(C).
5) Disconnect the low-pressure hose from evapo-
rator unit.
6) Disconnect the low-pressure hose from com-
pressor.
7) Remove the low-pressure hose from vehicle.
8) Remove the high-pressure hose attaching bolt
(D).
9) Disconnect the high-pressure hose from com-
pressor.
10) Disconnect the high-pressure hose from con-
denser.
11) Remove the high-pressure hose from vehicle.
12) Remove the high-pressure tube attaching bolt
(E).
13) Remove the high-pressure tube from vehicle.
2. REAR
1) Disconnect the ground cable from battery.
2) Using the refrigerant recovery system, dis-
charge refrigerant. Refrigerant Recovery Procedure.>
3) Remove the sheet and floor mat. REMOVAL, Floor Mat.>
4) Remove the ECM bracket and tube protector.
Module (ECM).>
5) Remove the quick connectors (A and B).
ST REMOVER PS 73499XA01A
ST REMOVER PD73499XA00A
NOTE:
Refer to the instruction manual for the ST when
working.
6) Remove the tube bracket.
7) Remove the front tube and rear tube connecting
bolts (C)
8) Remove the connecting bolts (D) of the rear
cooler unit.
AC-01318
(A)
(B)
(D)(C)
(D)
(E)

AC-39
Hose and Tube
HVAC SYSTEM (HEATER, VENTILATOR AND A/C)
9) Remove the front tube (E) and rear tube (F).
B: INSTALLATION
CAUTION:
•When disconnecting or connecting the hos-
es, do not apply excessive force. After install-
ing, check that no torsion or excessive tension
applied to the hoses.
•Seal the disconnected hose with a plug or vi-
nyl tape to prevent foreign matter from enter-
ing.
1) Install in the reverse order of removal.
2) Charge refrigerant. DURE, Refrigerant Charging Procedure.>
Tightening torque:
Refer to “COMPONENT” of “General Descrip-
tion”. UNIT, COMPONENT, General Description.>
C: INSPECTION
Check the hoses for cracks, damage and expan-
sion. If any fault is found, replace with new parts.
AC-01319
(A)(B)
(E)
(F)
(D)
(C)

AC-40
Relay and Fuse
HVAC SYSTEM (HEATER, VENTILATOR AND A/C)
19.Relay and Fuse
A: LOCATION
B: INSPECTION
While applying battery voltage to the terminal be-
tween (3) and (4), check continuity between (1) and
(2).
If no continuity exists, replace the relay with a new
one.
(1) Joint box
(2) Main fuse box
Main fan relay 1 (A)
Main fan relay 2 (B)
Sub fan relay (C)
A/C relay (D)
A/C Fuse (E)
AC-00787
(E)(1)
(2)
(A)
(B)(D)
(C)
(3) — (4): Continuity exists
(1) — (2): Continuity does not exist
AC-00641
1
1
2
2
3
3
4
4

AC-41
Pressure Switch (Triple Pressure Switch)
HVAC SYSTEM (HEATER, VENTILATOR AND A/C)
20.Pressure Switch (Triple Pres-
sure Switch)
A: INSPECTION
1) Connect the manifold gauge to the service valve
on the high-pressure side.
2) Remove the pressure switch harness connector.
Using a circuit tester, inspect the ON-OFF opera-
tion of the pressure switch.
AC-00788
1
243
Te r m i n a l
No.OPERATIONStandard
kPa (kg/cm2, psi)
High and low pressure switch 1 and 2
Tu r n s O F F.Rise to 3,140+50 –200 (32.02 +0.51 –2.04, 455.4 +7.25 –29.0)
Decrease to 196±20 (2.00±0.20, 28.4±2.9)
Tu r n s O N .Rise to 225+25 –29 (2.29 +0.25 –0.30, 32.6 +3.6 –4.2)
Decrease to 2,550±200 (26.00±2.04, 369.8±29.0)
Middle pressure switch 3 and 4Tu r n s O F F. I n c r e a s e t o 1 , 3 7 0±120 (14±1, 199±14)
Tu r n s O N . I n c r e a s e t o 1 , 7 7 0±100 (18±1, 256±14)

AC-42
Actuator
HVAC SYSTEM (HEATER, VENTILATOR AND A/C)
21.Actuator
A: REMOVAL
1. MODE DOOR ACTUATOR
Disconnect the connector, remove the screw, and
then remove the mode door actuator from the heat-
er and cooling unit.
2. FRESH/RECIRC DOOR ACTUATOR
Disconnect the connector, remove the screw, and
then remove the intake door actuator from the
blower motor unit.
3. AIR MIX DOOR ACTUATOR (AUTO A/C
MODEL)
Disconnect the connector, remove the screw, and
then remove the air mix door actuator from the
heater and cooling unit.
•Driver’s side
•Passenger’s side
B: INSTALLATION
Install in the reverse order of removal.
AC-01303
AC-01304
AC-01306
AC-01305

AC-43
Ambient Sensor (Auto A/C Model)
HVAC SYSTEM (HEATER, VENTILATOR AND A/C)
22.Ambient Sensor (Auto A/C
Model)
A: REMOVAL
1) Disconnect the ground cable from battery.
2) Disconnect the ambient sensor connector.
3) Remove the ambient sensor from the radiator
lower panel.
B: INSTALLATION
Install in the reverse order of removal.
C: INSPECTION
nostic Procedure for Sensors.>
AC-01307

AC-44
Sunload Sensor (Auto A/C Model)
HVAC SYSTEM (HEATER, VENTILATOR AND A/C)
23.Sunload Sensor (Auto A/C
Model)
A: REMOVAL
1) Disconnect the ground cable from battery.
2) Disconnect the connector and remove the sun-
load sensor.
CAUTION:
Be careful not to damage the interior trims
when removing the sensor.
B: INSTALLATION
Install in the reverse order of removal.
C: INSPECTION
nostic Procedure for Sensors.>
AC-01308