Subaru Legacy 2002 Service Manual page 2779

HVAC System (Heater, Ventilator and A/C)
19. Pressure Switch (Triple
Switch)
S701633
A: INSPECTION
1) Connect the manifold gauge to the service manifold on the high-pressure side.
2) Remove the pressure switch harness connector. Using a circuit tester, inspect the ON-OFF operation of
the pressure switch.
LHD model:
High and low pressure
switch
Middle pressure switch
RHD model:
High and low pressure
switch
Middle pressure switch
PRESSURE SWITCH (TRIPLE SWITCH)
S701633A10
B4M2405
Tester connection
1 — 2
3 — 4
B4M2529
Tester connection
1 — 2
3 — 4
Operation
Increasing to 2,940±196 (29.98±2.00, 426±28)
Turns OFF.
Decreasing to 177±20 (1.8±0.2, 26±3)
Increasing to 216 or less (2.2, 31)
Turns ON.
Decreasing to 2,350±196 (23.97±2.00, 341±28)
Turns OFF. 1,370±120 (13.97±1.22, 199±17)
Turns ON. 1,770±100 (18.05±1.02, 257±15)
Operation
Increasing to 3,140
+7.3
455.3
Turns OFF.
Decreasing to 196±20 (2.0±0.2, 28±3)
Increasing to 225
+3.6
/ )
Turns ON.
–4.3
Decreasing to 2,550±200 (26.0±2.04, 370±29)
Turns OFF. 1,370±120 (13.97±1.22, 198.7±17.3)
Turns ON. 1,770±80 (18.05±0.82, 256.7±11.7)
AC-46
Specified condition
2
kPa (kg/cm , psi)
Specified condition
2
kPa (kg/cm , psi)
+50 +0.51
/ (32.02
–200
/ )
–29.0
+25 +0.25
/ (2.29 /
–29 –0.30
/ ,
–2.04
, 32.6