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Toyota Yaris L4-1.5L (1NZ-FE) (2007)03 · Maintenance
03 · Maintenance

Refrigerant: Specifications (page 9 of 10)

Make
Toyota
Model
Yaris
Engine
L4-1.5L (1NZ-FE)
Year
2007
Section
Fluids › Refrigerant
MaintenanceSpecifications · page 9 of 10
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HINT:
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The relationship between refrigerant charge amount and pressure is as follows.

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High Charge Range:
If refrigerant is overcharged, pressure rises on the high-pressure side.  High-pressure cut off frequently occurs. This causes insufficient cooling
performance and also insufficient compressor lubrication.

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Low Charge Range:
Shortage of refrigerant causes insufficient cooling performance and low circulation of refrigerant oil, which shortens compressor life. 
Operation with insufficient coolant raises refrigerant temperature and causes heat deterioration of rubber seals and hoses.  Cracking and thus
refrigerant leakage may occur.

1. Install the caps onto the service valves  on the refrigerant line.

3. WARM UP ENGINE

NOTE:  Warm up the engine at less than 2,000 rpm for 1 minute or more after charging it with refrigerant.

4. CHECK FOR REFRIGERANT LEAKAGE

a. After recharging the refrigerant gas, check for refrigerant gas leakage using a halogen leak detector.
b. Perform the operation as follows:

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Stop the engine.

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Secure good ventilation (the halogen leak detector may react to volatile gases other than refrigerant, such as evaporated gasoline or exhaust
gas).

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Repeat the test 2 or 3 times.

-

Make sure that some refrigerant remains in the refrigeration system.
When compressor is off: approximately 392 to 588 kPa (4 to 6 kgf.sq.cm, 57 to 85 psi)

HINT:  It is impossible for the above pressure to be maintained if there is leakage.

c. Using the halogen leak detector, check the refrigerant line, especially the connection points, for leakage.

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