Subaru Impreza 2003 Service Manual page 2756

HVAC SYSTEM (HEATER, VENTILATOR AND A/C)
18.Pressure Switch (Dual
Switch)
A: INSPECTION
1) Connect the manifold gauge to the service valve
on high-pressure side.
2) Remove the pressure switch harness connector.
Using a circuit tester, inspect the ON-OFF opera-
tion of pressure switch.
High and low pressure switch
PRESSURE SWITCH (DUAL SWITCH)
2 1
AC-00642
Terminal Operation
No.
Increasing to
2,800±100 (29±1, 406±15)
Turns OFF.
Decreasing to
278±29 (2.83±0.3, 40.3±4.2)
1 and 2
Increasing to
287
Turns ON.
Decreasing to
2,200±200 (22.4±2, 319±29)
AC-38
Standard
kPa (kg/cm
+39 +0.4 +5.7
/ (2.9 / , 42 /
−25 −0.25 −3.6
2
, psi)
)