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550BN–01
I30146
3
4
2
1
ON (Continuity)
Low pressure side
High pressure side
3,140 kpa
196 kpa
(2.0 kgf/cm
2
28 psi) (132.0 kgf/cm
2
455 psi)
OFF (No continuity)
OFF (No continuity)
I30291
3
4
2
1
1,226 kpa
(12.5 kgf/cm
2
178 psi)
OFF
(No continuity)
ON
(Continuity)
1,520 kpa
(15.5 kgf/cm
2
220 psi)
–
HEATER & AIR CONDITIONER
AIR CONDITIONING SYSTEM
55–3
2318
Author:
Date:
2002 CAMRY REPAIR MANUAL (RM881U)
ON–VEHICLE INSPECTION
1.
INSPECT PRESSURE SWITCH NO.1.
(a)
Magnetic clutch control:
Inspect pressure switch operation.
(1)
Set on the manifold gauge set.
(2)
Connect the positive (+) lead from the ohmmeter to
terminal 4 and the negative (–) lead to terminal 1.
(3)
Check continuity between terminals when refriger-
ant pressure is changed, as shown in the illustra-
tion.
If operation is not as specified, replace the pressure switch.
(b)
Cooling fan control:
Inspect pressure switch operation.
(1)
Connect the positive (+) lead from the ohmmeter to
terminal 2 and the negative (–) lead to terminal 3.
(2)
Check continuity between terminals when refriger-
ant pressure is changed, as shown in the illustra-
tion.
If operation is not as specified, replace the pressure switch.