AIR CONDITIONING SYSTEM CHECK MODE PROCEDURE


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


    1. Start the engine.

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

      B000M0QE01
      Text in Illustration
      *A for LHD (for TMC, TMMR Made) *B for RHD
      *C for LHD (for TMMK Made) - -
      Measurement Condition
      Item Condition
      A/C Switch On
      A/C 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.

      Tech Tips

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

    3. Connect the intelligent tester to the DLC3.

    4. Check for DTC B14B8 Click here.

      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 (for TMC, TMMR Made)) Click here (for TMMK Made)).
      DTC B14B8 is not output Correct or insufficient Perform a refrigerant shortage check using the intelligent tester.

  2. REFRIGERANT SHORTAGE CHECK USING THE INTELLIGENT TESTER


    1. Connect the intelligent tester to the DLC3.

    2. Start the engine.

    3. Turn the intelligent tester on.

    4. Enter the following menus: Body / Air Conditioner / Utility / Refrigerant Shortage Check.

    5. According to the display on the intelligent tester, 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 Fresh (Ambient temperature is 31°C (87°F) or more)
      Recirculation (Ambient temperature is 30°C (86°F) or less)
      Blower Speed HI
      Temperature Setting MAX HOT

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

      Tech Tips


      • Refer to the intelligent tester operator's manual for further details.

      • A message indicating a refrigerant shortage is displayed on the intelligent tester 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 intelligent tester.

      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 (for TMC, TMMR Made)) Click here (for TMMK Made)).

      2. Evacuate the air conditioning system and charge it with the appropriate volume of new or purified refrigerant.
      Refrigerant correct Correct -