Sienna AWD V6-3.3L (3MZ-FE) (2004)
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Refrigerant Pressure Sensor / Switch: Testing and Inspection
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 2 and the negative (-) lead to terminal 1.
3. Check continuity between terminals when refrigerant pressure is changed, as shown in the illustration.
If operation is not as specified, replace the pressure switch.
