HEATING / AIR CONDITIONING AIR CONDITIONING SYSTEM(for Automatic Air Conditioning System) CHECK MODE PROCEDURE

REFRIGERANT SHORTAGE CHECK IN NORMAL OPERATION (CHECK A/C SWITCH INDICATOR AND DTC)

Start the engine.

Check that the A/C switch indicator remains on when the following conditions are met.

Measurement Condition:
Item	Condition
A/C switch	On
Air conditioning operation time	15 minutes or more
Ambient temperature*	0 to 49°C (32 to 120°F)
Engine coolant temperature	45°C (113°F) or more

*: If the ambient temperature is not within the range shown, do not perform this check.

HINT:: The A/C switch indicator and air conditioning system turn off if the amount of refrigerant in the system is insufficient.

Connect the GTS to the DLC3.

Check for DTC B14B8.

Result:
Result	Amount of Refrigerant	Corrective Action
DTC B14B8 is output	Empty or nearly empty	Check for refrigerant leaks using a halogen leak detector, and repair if necessary. Click here()
DTC B14B8 is not output	Correct or insufficient	Perform a refrigerant shortage check using the GTS.

REFRIGERANT SHORTAGE CHECK USING GTS

Connect the GTS to the DLC3.

Start the engine.

Turn the GTS on.

Enter the following menus: Body Electrical / Air Conditioner / Utility / Refrigerant Gas Volume Check.

According to the display on the GTS, perform the refrigerant shortage check when the following conditions are met.

Body Electrical > Air Conditioner > Utility

Tester Display
Refrigerant Gas Volume Check

50005 121 2186

*: If the ambient temperature is not within the range shown, do not perform this 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 or leakage	1. Check for refrigerant leaks using a halogen leak detector, and repair if necessary. Click here() 2. Evacuate the air conditioning system and charge it with the appropriate volume of new or purified refrigerant.
Refrigerant correct	Correct	-