Toyota Tacoma 2015-2018 Service Manual: Replacement

REPLACEMENT

PROCEDURE

1. RECOVER REFRIGERANT FROM REFRIGERATION SYSTEM

(a) Start the engine.

(b) Operate the cooler 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 A/C compressor.

NOTICE:

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

(c) Stop the engine.

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

NOTICE:

Be sure to use a refrigerant recovery unit that is compatible with HFO-1234yf (R1234yf) systems.

HINT:

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

2. CHARGE AIR CONDITIONING SYSTEM WITH REFRIGERANT

HINT:

Charge refrigerant in accordance with the equipment manual.

(a) Perform vacuum purging using a refrigerant recover unit.

NOTICE:

Be sure to use a refrigerant recovery unit that is compatible with HFO-1234yf (R1234yf) systems.

(b) Charge refrigerant HFO-1234yf (R1234yf).

Standard:

480 to 540 g (16.93 to 19.05 oz.)

NOTICE:

Make sure the amount of refrigerant is within 30 g of the specified amount.

NOTICE:

Do not operate the cooler compressor before charging refrigerant as the cooler compressor will not work properly without any refrigerant, and will overheat.

3. WARM UP ENGINE

(a) Warm up the engine at less than 1640 rpm for 2 minutes or more after charging the refrigerant.

NOTICE:

Be sure to warm up the compressor by turning the A/C switch on after removing and installing the cooler refrigerant lines (including the compressor) to prevent damage to the compressor.

4. INSPECT FOR REFRIGERANT LEAK

(a) After recharging the refrigerant, check for refrigerant gas leakage using a gas leak detector.

HINT:

Be sure to use a gas leak detector that is compatible with HFO-1234yf (R1234yf) systems.

(1) Perform the operation observing the following instructions:

(2) Using a gas leak detector, check the refrigerant line for leakage.

(3) If a gas leak is not detected from the drain hose, remove the blower motor control (blower resistor) from the cooling unit. Insert the sensor of the gas leak detector into the unit and check for gas leakage.

(4) Disconnect the pressure switch connector and wait for approximately 20 minutes. Bring the gas leak detector close to the pressure switch and check for gas leakage.