Toyota Yaris: Heating / Air Conditioning / Refrigerant (for Hfc-134a(r134a))

Replacement

REPLACEMENT

PROCEDURE

1. RECOVER REFRIGERANT FROM REFRIGERATION SYSTEM

(a) Turn the ignition switch ON.

(b) Operate the compressor under the conditions shown below:

This causes most of the compressor oil from the various components of the A/C system to collect in the compressor.

HINT:

It is not necessary to operate the compressor if the A/C does not operate because of compressor lock, etc.

(c) Turn the ignition switch off.

(d) Recover the refrigerant from the A/C system using a refrigerant recovery unit.

HINT:

Use the refrigerant recovery unit in accordance with the manufacturer's instruction manual.

2. CHARGE AIR CONDITIONING SYSTEM WITH REFRIGERANT

(a) Perform vacuum purging using a vacuum pump or appropriate equipment.

(b) Charge the air conditioning system with refrigerant.

Refrigerant Type:

HFC-134a (R134a)

Standard Charge Amount:

390 to 450 g (13.8 to 15.9 oz.)

SST: 09985-20010

09985-02010

09985-02050

09985-02060

09985-02070

09985-02080

09985-02090

09985-02110

09985-02130

09985-02140

09985-02150

HINT:

Ensure that sufficient refrigerant is available to recharge the system when using a refrigerant recovery unit. Refrigerant recovery units are not always able to recover 100% of the refrigerant from an air conditioning system.

3. WARM UP ENGINE

(a) Keep the A/C switch on for at least 2 minutes to warm up the compressor.

NOTICE:

To prevent damage to the compressor, be sure to warm up the compressor when turning the air conditioning on after removing and installing any air conditioning system lines (including the compressor).

4. INSPECT FOR REFRIGERANT LEAK

(a) After recharging the air conditioning system with refrigerant, inspect for refrigerant leaks using a halogen leak detector.

(b) Carry out the test under the following conditions:

(c) Using a halogen leak detector, inspect for refrigerant leaks from the air conditioning system.

*a Inspect for Leak *b Halogen Leak Detector

(d) Bring the halogen leak detector close to the drain cooler hose with the detector power off, and then turn the detector on. HINT: After the blower motor has stopped, leave the cooling unit for more than 15 minutes. Bring the halogen leak detector sensor under the drain cooler hose. When bringing the halogen leak detector close to the drain cooler hose, make sure that the halogen leak detector does not react to volatile gases. If it is not possible to avoid interference from volatile gases, the vehicle should be lifted up to allow checking for leaks.

*1 Drain Cooler Hose *a Halogen Leak Detector

(e) If a refrigerant leak is not detected from the drain cooler hose, remove the blower motor control from the cooling unit. Insert the halogen leak detector sensor into the unit and check for leaks.

(f) Disconnect the pressure sensor connector and leave it for approximately 20 minutes. Bring the halogen leak detector close to the pressure sensor and check for leaks.

HINT:

When checking for leaks, the presence of oily dirt at a joint can indicate a leak.