Highlander 2WD V6-3.3L (3MZ-FE) Hybrid (2006)
Refrigerant Pressure Sensor / Switch: Testing and Inspection
PRESSURE SWITCH
ON-VEHICLE INSPECTION
1. INSPECT A/C PRESSURE SWITCH
a. Low and high pressure cut side:
Inspect pressure switch operation.
1. Set the manifold gauge.
2. Connect the positive (+) lead from the ohmmeter to terminal 4 and the negative (-) lead to terminal 1.
3. Check continuity between the terminals when refrigerant pressure is changed, as shown in the illustration.
If operation is not as specified, replace the liquid tube sub-assembly.