Sequoia 2WD V8-4.7L (2UZ-FE) (2003)
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Evaporator Core: Testing and Inspection
Rear A/C Evaporator
ON-VEHICLE INSPECTION
1. CHECK QUANTITY OF GAS DURING REFRIGERATION CYCLE
2. SET ON MANIFOLD GAUGE SET
3. RUN ENGINE
a. Rear blower speed set at "HI" position
b. A/C switch ON
c. Rear temperature control set at 18.5 °C (65 °F)
d. Run the engine at 1,500 rpm for at least 5 minutes.
Then check that the high pressure reading is 1.9 - 2.1 MPa (19-21 kgf/sq.cm, 270 - 300 psi).
4. CHECK EXPANSION VALVE
If the expansion valve is faulty, the low pressure reading will drop to 0 kPa (0 kgf/sq.cm, 0 psi).
