Toyota Yaris: Air Conditioning System / Utility
UTILITY
REFRIGERANT SHORTAGE CHECK USING GTS
(a) Check that the following conditions are met and perform the refrigerant shortage check according to the display on the GTS.
Measurement Condition:
Item | Condition |
A/C switch | On |
Ambient temperature*1 | 0 to 49°C (32 to 120°F) |
Blower speed | HI |
*1: If the ambient temperature is not within the range shown, do not perform this check.
Body Electrical > Air Conditioner > Utility
Tester Display |
Refrigerant Gas Volume Check |
HINT:
-
Refer to the GTS operator's manual for further details.
-
A message indicating a refrigerant shortage is displayed on the GTS and the air conditioning system turns off if the amount of refrigerant in the system is insufficient.
-
DTCs are not stored when performing the refrigerant shortage check using the GTS.
Result:
Result | Amount of Refrigerant | Corrective Action |
Refrigerant shortage | Insufficient | -
Check for refrigerant leaks using a halogen leak detector, and repair if necessary.
-
Evacuate the air conditioning system and charge it with the appropriate volume of new or purified refrigerant.
|
Refrigerant correct | Correct | - |
REFRIGERANT PRESSURE HISTORY CLEAR
(a) Press the OFF switch.
(b) Perform the refrigerant pressure history clear according to the display on the GTS.
Body Electrical > Air Conditioner > Utility
Tester Display |
Refrigerant Pressure History Clear |
A/C OPERATION LIMIT HISTORY COUNT CLEAR
(a) Press the OFF switch.
(b) Perform the A/C operation limit history count clear according to the display on the GTS.
Body Electrical > Air Conditioner > Utility
Tester Display |
A/C Operation Limit History Count Clear |
INITIALIZATION SERVO MOTOR INITIALIZATION (a) Press the OFF switch. (b) According to the GTS display, perform servo motor initialization. Body Electrical > Air Conditioner > Utility Tester Display Servomotor Initialization HINT: When initialization is started, the AUTO switch indicator will illuminate and then will turn off when initialization has completed...
PROBLEM SYMPTOMS TABLE NOTICE:
Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table...
Other information:
ComponentsCOMPONENTS ILLUSTRATION
*1 CENTER STOP LIGHT ASSEMBLY - - RemovalREMOVAL PROCEDURE 1. REMOVE REAR SPOILER ASSEMBLY Click here
2. REMOVE CENTER STOP LIGHT ASSEMBLY (a) Remove the 2 screws to remove the center stop light assembly...
DESCRIPTION Problem Symptom Suspected Area Trouble Area
Engine speed fluctuation due to abnormal combustion
Idle speed too low or high
Strong engine vibration due to above symptoms
Ignition malfunction
Deviation in air fuel ratio (Excessive or insufficient intake air volume or fuel supply)
Insufficient compression
Changes in load from another system
Ignition system
Spark plug
Ignition coil assembly
Fuel system
Direct fuel injector assembly
Port fuel injector assembly
Fuel pump assembly (for high pressure side)
Fuel pump (for low pressure side)
Fuel pump control circuit
Fuel line
Purge VSV system
Fuel quality (existence of foreign matter, degradation)
Intake and exhaust systems
Mass air flow meter sub-assembly
Intake system
(Air leaks or deposit accumulation)
Throttle body with motor assembly
Air fuel ratio sensor (sensor 1)
Air fuel ratio sensor (sensor 2)
Cam timing oil control solenoid assembly
Variable Valve Timing system (VVT system)
Other control systems
ECM
Wire harness or connector
Knock control sensor
Engine coolant temperature sensor
Engine
Water control valve
Engine assembly
Engine mount
High load from another system
Air conditioning system
Power steering system
Electrical load signal system
SYMPTOM AND CAUSE OF SYSTEM MALFUNCTION HINT: The following are descriptions of the characteristics of each system malfunction...
Categories
WARNING
When removing the fuel-filler cap, loosen the cap slightly and wait
for
any hissing to stop, then remove it
Fuel spray is dangerous. Fuel can burn skin and eyes and cause illness
if
ingested. Fuel spray is released when there is pressure in the fuel tank and
the fuel-filler cap is removed too quickly.
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