Sequoia 4WD V8-4.7L (2UZ-FE) (2006)
9. Insufficient compressor compression
3. INSPECT IDLE-UP SPEED
a. Warm up the engine.
b. Inspect idle-up speed when the following conditions are established.
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Warm up engine
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Blower speed control switch at "HI" position
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A/C switch ON " Temperature control dial at "COOL" position
If idle speed is not as specified, check the Idle control system.
4. INSPECT FOR LEAKAGE OF REFRIGERANT
a. perform under the following conditions:
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Stop the engine.
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Secure good ventilation (If not, the gas leak detector may react to volatile gases witch are not refrigerant, such as evaporated gasoline and
exhaust gas.)
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Repeat the test 2 or 3 times.
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Make sure that there is some refrigerant remaining in the refrigeration system. When the compressor is OFF: approx. 392 to 588 kPa (4 to
6 kgf/sq.cm, 57 to 85 psi)
b. Bring the gas leak detector close to the drain hose before performing the test.
HINT:
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After the blower motor stopped, leave the cooling unit for more than 15 minutes.
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Bring the gas leak detector sensor under the drain hose.
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When bringing the gas leak detector close to the drain hose, make sure that the gas leak detector does not react to the volatile gases.
If such reaction is unavoidable, the vehicle must be lifted up.
c. If gas leak is not detected on the drain hose, remove the blower motor linear controller from the cooling unit. Then insert the gas leak detector
sensor into the unit and perform the test.
d. Disconnect the connector and leave the pressure switch for approx. 20 minutes. Then bring the gas leak detector close to the pressure switch
and perform the test.
e. Bring the gas leak detector close to the refrigerant lines and perform the test.