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Home >> Toyota >> 2020 >> RAV4 XLE, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 48 (Heating / Air Conditioning System (HV) - Diagnostics - Introduction (1 Of 2)) >> AIR CONDITIONING SYSTEM (for HV Model) >> Utility [11/2018 - 02/2019] >> Utility [11/2018 - 02/2019]

Utility [11/2018 - 02/2019]

WARNING: This page is about a different variant/trim than selected.
  1. REFRIGERANT HIGH PRESSURE HISTORY CLEAR 
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (IG).
    3. Turn the Techstream on.
    4. 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 power 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
      Vehicle Condition Power switch on (READY)
      A/C Switch On
      Ambient Temperature*1 0 to 49°C (32 to 120°F)
      Air Conditioning Air Inlet Temperature*2 25 to 35°C (77 to 95°F)
      Set Temperature MAX COLD
      Recirculation/fresh Control Switch Recirculation
      Air Vent Damper Position FACE
      Blower Speed HI

      HINT: 

      • Refer to the Techstream operator's manual 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.
      • *1: This inspection can be judged correctly only if the ambient temperature is within a range of 0 to 49°C (32 to 120°F). Therefore, postpone the test if the temperature is low.
      • *2: This inspection can be judged correctly only if the air inlet temperature is within a range of 25 to 35°C (77 to 95°F). Therefore, postpone the test if the temperature is out of range.
      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.
        1. for HFC-134a (R134a): Refer to REPLACEMENT [11/2018 - 08/2020]
        2. for HFO-1234yf (R1234yf): Refer to REPLACEMENT [11/2018 - 02/2019]
      Refrigerant correct Correct -
      Refrigerant incorrect Incorrect Confirm check condition and carry out again
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