Toyota Tundra (2015 year). Manual — part 2306
SYMPTOMS
PROBABLE CAUSE
DIAGNOSIS
CORRECTIVE ACTIONS
Pressure extremely high
on both low and
high-pressure sides
- Excessive
refrigerant
- Cooling performance
- Condenser is dirty
- Condenser fan
motor is
malfunctioning
- Excessive
refrigerant
1. Clean condenser
2. Check condenser fan motor
operation
3. If 1 and 2 normal, check the
(7) The A/C system does not function due to air in the refrigeration system.
CAUTION:
The low-pressure piping may be very hot and cause serious burns.
HINT:
These gauge indications occur when the refrigeration system opens and the refrigerant is charged without
vacuum purging.
SYMPTOMS
PROBABLE CAUSE
DIAGNOSIS
CORRECTIVE ACTIONS
- Pressure extremely high on both low
and high-pressure sides
- Low-pressure piping is too hot to
touch
Air in refrigeration
system
- Air in refrigeration
system
- Vacuum purging
insufficient
1. Check if compressor oil is
dirty or insufficient
2. Evacuate air and charge
new refrigerant
(8) The A/C system does not function effectively due to an expansion valve malfunction.
AIR CONDITIONING: REFRIGERANT: ON-VEHICLE INSPECTION; ...
SYMPTOMS
PROBABLE CAUSE
DIAGNOSIS
CORRECTIVE
ACTIONS
- Pressure extremely high on both low
and high-pressure sides
- Frost or condensation on piping on
low-pressure side
Problem with
expansion valve
- Excessive refrigerant in low
pressure piping
- Expansion valve open too
wide
Replace expansion
valve
(9) The A/C system does not function due to a defective compressor.
SYMPTOMS
PROBABLE CAUSE
DIAGNOSIS
CORRECTIVE
ACTIONS
- Pressure extremely high on both
low and high-pressure sides
- Pressure extremely low on high
pressure side
Internal leakage in
compressor
- Compression failure
- Leakage from damaged valve
or sliding parts broken
Repair or replace
compressor
AIR CONDITIONING: REFRIGERANT: ON-VEHICLE INSPECTION; ...
Last Modified: 9-16-2014
6.6 A
Doc ID: RM000001R8Y04KX
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: AIR CONDITIONING: REFRIGERANT: REPLACEMENT; 2015 MY Tundra [08/2014 - ]
REPLACEMENT
1. RECOVER REFRIGERANT FROM REFRIGERATION SYSTEM
(a) Start up the engine.
(b) Turn the A/C switch ON.
compressor.
(d) Stop the engine.
(e) Recover the refrigerant from the A/C system using a refrigerant recovery unit.
2. CHARGE REFRIGERANT
SST: 09985-20010
09985-02010
09985-02050
09985-02060
09985-02070
09985-02090
09985-02110
09985-02130
09985-02150
(a) Perform vacuum purging using a vacuum pump.
(b) Charge refrigerant HFC-134a (R134a).
Standard:
600 +/-30 g (21.2 +/-1.1 oz.)
AIR CONDITIONING: REFRIGERANT: REPLACEMENT; 2015 MY Tu...
Text in Illustration
*a
Amount to be charged
*b
Charge 200 g (7.05 oz.)
*c
Mean value in proper range
*d
Point where bubbles disappear
*e
Overcharged
*f
High Pressure
*g
Sub-cool System
*h
Refrigerant Amount
NOTICE:
(a) Warm up the engine at less than 1500 rpm for 1 minute or more after charging the refrigerant.
NOTICE:
Be sure to warm up the compressor when turning the A/C switch ON after removing and installing the cooler
refrigerant lines (including the compressor), to prevent damage to the compressor.
4. CHECK FOR REFRIGERANT GAS LEAK
(a) After recharging the refrigerant gas, check for refrigerant gas leakage using a halogen leak detector.
(b) Perform the operation under the following conditions:
The ignition switch is OFF.
The vehicle is in a place with good air ventilation and without any volatile gases, such as
evaporated gasoline or exhaust gas. The detector is very sensitive to volatile gases.
Some refrigerant is remaining in the refrigerant system.
The compressor is off and its pressure is approximately 392 to 588 kPa (4.0 to 6.0 kgf/cm
2
, 57 to
85 psi).
(c) Using a halogen leak detector, check the refrigerant line for
leakage.
Text in Illustration
*1
Halogen Leak Detector
*a
Inspect for leak
(d) If a gas leak is not detected on the drain hose, remove the blower motor control (blower resistor) from the
cooling unit. Insert the halogen leak detector sensor into the unit and perform the test.
(e) Disconnect the connector and wait for approximately 20 minutes. Bring the halogen leak detector close to
the pressure switch and perform the test.
AIR CONDITIONING: REFRIGERANT: REPLACEMENT; 2015 MY Tu...
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