Subaru Legacy (2005 year). Service manual — part 868
AC-41
HVAC SYSTEM (HEATER, VENTILATOR AND A/C)
Pressure Switch (Triple Pressure Switch)
21.Pressure Switch (Triple Pressure 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 operation of
pressure switch.
AC-00788
1
2
4
3
Terminal
No.
Operation
Standard
kPa (kgf/cm
2
, psi)
High and low pressure switch
1 and 2
Turns OFF.
Increasing to 3,140
+50
−200
(32.02
+0.51
−2.04
, 455.4
+7.25
−29.0
)
Decreasing to 196
±20 (2.00±0.20, 28.4±2.9)
Turns ON.
Increasing to 225
+25
−29
(2.29
+0.25
−0.30
, 32.6
+3.6
−4.2
)
Decreasing to 2,550
±200 (26.00±2.04, 369.8±29.0)
Middle pressure switch
3 and 4
Turns OFF.
Decreasing to 1,370
±120 (14±1, 199±14)
Turns ON.
Increasing to 1,770
±100 (18±1, 256±14)
AC-42
HVAC SYSTEM (HEATER, VENTILATOR AND A/C)
Actuator
22.Actuator
A: REMOVAL
1. MODE DOOR ACTUATOR
Disconnect the connector, remove the screw, and
then remove the mode door actuator from heater
and cooling unit.
2. INTAKE DOOR ACTUATOR
Disconnect the connector, remove the screw, and
then remove the intake door actuator from 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 heater
and cooling unit.
B: INSTALLATION
Install in the reverse order of removal.
AC-01137
AC-01138
AC-01139
AC-43
HVAC SYSTEM (HEATER, VENTILATOR AND A/C)
Ambient Sensor (Auto A/C Model)
23.Ambient Sensor (Auto A/C
Model)
A: REMOVAL
1) Open the front hood.
2) Disconnect the ground cable from battery.
3) Disconnect the ambient sensor connector.
4) Remove the ambient sensor from the radiator
lower panel.
• H4 model
• H6 model
B: INSTALLATION
Install in the reverse order of removal.
C: INSPECTION
<Ref. to AC(diag)-30, AMBIENT SENSOR, Diag-
nostic Procedure for Sensors.>
AC-00125
AC-01218
AC-44
HVAC SYSTEM (HEATER, VENTILATOR AND A/C)
Sunload Sensor (Auto A/C Model)
24.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
<Ref. to AC(diag)-37, SUNLOAD SENSOR, Diag-
nostic Procedure for Sensors.>
AC-00930
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