Subaru Legacy 2004 Service Manual page 3402

HVAC SYSTEM (HEATER, VENTILATOR AND A/C)
20.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.
High and low pressure switch
Middle pressure switch
Pressure Switch (Triple Pressure Switch)
1
4 3
2
AC-00788
Terminal
Operation
No.
Turns OFF.
1 and 2
Turns ON.
Turns OFF.
3 and 4
Turns ON.
+50
Increasing to 3,140
%200
Decreasing to 196#20 (2.00#0.20, 28.4#2.9)
+25
Increasing to 225
%29
Decreasing to 2,550#200 (26.00#2.04, 369.8#29.0)
Decreasing to 1,370#120 (14#1, 199#14)
Increasing to 1,770#100 (18#1, 256#14)
AC-40
Standard
2
kPa (kg/cm , psi)
+0.51 +7.25
(32.02 , 455.4
%2.04
+0.25 +3.6
(2.29 , 32.6
%0.30 %4.2
)
%29.0
)