Air Conditioning System (For Hatchback) Check Mode Procedure

Vehicle Interior. Yaris. Ncp93, 131
Heating Air Conditioning. Yaris. Ncp93, 131

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

  1. REFRIGERANT SHORTAGE CHECK USING THE TECHSTREAM

Air Conditioning System (For Hatchback) -- Check Mode Procedure



REFRIGERANT SHORTAGE CHECK IN NORMAL OPERATION (CHECK A/C SWITCH INDICATOR AND DTC)
Yaris. Ncp93, 131

  1. Turn the ignition switch to ON.

  2. Check that A/C switch indicator is turned on when the following conditions are met.

    Measurement Condition
    Item
    		Condition
    A/C Switch
    		ON
    A/C driving 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 does not meet condition, do not perform this check.
    HINT:
    If the amount of refrigerant in the system is insufficient, air conditioning system operation stops after 11 minutes in order to prevent compressor burnout, and the A/C switch indicator light turns off.

  3. Connect the Techstream to the DLC3.

  4. Check for DTC B14B8.

    Result
    Result
    		Amount of Refrigerant
    		Corrective Action
    DTC B14B8 is output
    		Empty or nearly empty
    		Check for gas leakage using halogen leak detector, and repair if necessary (YARIS_NCP93 RM0000026BV04GX.html)
    DTC B14B8 is not output
    		Correct or insufficient
    		Perform the refrigerant shortage check using the Techstream

REFRIGERANT SHORTAGE CHECK USING THE TECHSTREAM

  1. Connect the Techstream to the DLC3.

  2. Turn the ignition switch to ON.

  3. Turn the Techstream on.

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

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

    Measurement Condition
    Item
    		Condition
    A/C Switch
    		ON
    Ambient temperature*
    		0 to 49°C (32 to 120°F)
    R/F Switch
    		Recirculation (Ambient temperature is 30°C (86°F) or less)
    Fresh (Ambient temperature is 31°C (87°F) or more)
    Blower Speed
    		HI
    Temperature Setting
    		MAX HOT
    *: If the ambient temperature does not meet condition, do not perform this check.
    HINT:
    1. Refer to the Techstream operator's manual for further details.
    2. The message "The gas volume is insufficient" is shown on the Techstream screen and air conditioning system is stopped if the amount of refrigerant is insufficient in the cycle.
    3. The refrigerant shortage check using the Techstream does not output a DTC.

    Result
    Result
    		Amount of Refrigerant
    		Corrective Action
    The gas volume is insufficient
    		Insufficient or leakage
    1. Check for gas leakage using halogen leak detector, and repair if necessary
    2. Evacuate air and then charge appropriate volume of new refrigerant
    The gas volume is normal
    		Correct
    		-