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Home >> Lexus >> 2020 >> ES 300h Luxury >> Repair and Diagnosis >> External Pages >> Different car >> Section 99 (Heating / Air Conditioning System (Except Hybrid) - Diagnostics - Introduction) >> AIR CONDITIONING SYSTEM (for Gasoline Model) >> Utility [06/2018 - ] >> Utility [06/2018 - ]

Utility [06/2018 - ]

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  1. REFRIGERANT HIGH PRESSURE HISTORY CLEAR 
    1. Connect the Techstream to the DLC3.
    2. Turn the engine switch on (IG).
    3. Press the OFF switch.
    4. Turn the Techstream on.
    5. Enter the following menus: Body Electrical / Air Conditioner / Utility / Refrigerant High Pressure History Clear.

      Body Electrical > Air Conditioner > Utility 

      Tester Display
      Refrigerant High Pressure History Clear
  2. REFRIGERANT SHORTAGE CHECK USING TECHSTREAM 
    1. Connect the Techstream to the DLC3.
    2. Turn the engine switch on (IG).
    3. Turn the Techstream on.
    4. Enter the following menus: Body Electrical / Air Conditioner / Utility / Refrigerant Gas Volume Check.

      Body Electrical > Air Conditioner > Utility 

      Tester Display
      Refrigerant Gas Volume Check
    5. Check that the following conditions are met and perform the refrigerant shortage check according to the display on the Techstream.
      MEASUREMENT CONDITION:

      Item Condition
      A/C switch On
      Ambient temperature* 0 to 49°C (32 to 120°F)
      Blower speed HI

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

      HINT: 

      • Refer to the Techstream operator's service information for further details.
      • A message indicating a refrigerant shortage is displayed on the Techstream 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 Techstream.
      RESULT:

      Result Amount of Refrigerant Corrective Action
      Refrigerant shortage Insufficient
      1. Check for refrigerant leaks using a halogen leak detector, and repair if necessary.
      2. Evacuate the air conditioning system and charge it with the appropriate volume of new or purified refrigerant.

        Refer to REPLACEMENT [06/2018 - ]
      Refrigerant correct Correct -
  3. A/C OPERATION LIMITATION HISTORY COUNT CLEAR 
    1. Connect the Techstream to the DLC3.
    2. Turn the engine switch on (IG).
    3. Press the OFF switch.
    4. Turn the Techstream on.
    5. Enter the following menus: Body Electrical / Air Conditioner / Utility / A/C Operation Limitation History Count Clear.

      Body Electrical > Air Conditioner > Utility 

      Tester Display
      A/C Operation Limitation History Count Clear
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