Sienna FWD V6-3.5L (2GR-FE) (2009)
Refrigerant: Testing and Inspection
AIR CONDITIONING: REFRIGERANT: ON-VEHICLE INSPECTION
ON-VEHICLE INSPECTION
1. INSPECT REFRIGERANT PRESSURE WITH MANIFOLD GAUGE SET
(a) This method uses a manifold gauge set to locate problem areas. Read the manifold gauge pressure when these conditions are established.
Test conditions:
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Temperature at the air inlet is 30 to 35°C (86 to 95°F).
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Engine is running at 1,500 rpm.
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All doors are fully open.
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Blower speed control switch is at HI.
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Temperature control switch is at MAX. COOL.
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A/C switch is ON.
(b) Gauge readings (Reference)
(1) Normally functioning refrigeration system
Gauge reading:
(2) The A/C system periodically changes between normal and improper function due to moisture in the refrigerant system.