AIR CONDITIONING SYSTEM CHECK MODE PROCEDURE


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


    1. Turn the power switch on (READY).

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

      A01MTRZC01
      *A for LHD *B for RHD
      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 GTS 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

      DTC B14B8 is not output Correct or insufficient Perform a refrigerant shortage check using the GTS.

  2. REFRIGERANT SHORTAGE CHECK USING GTS


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (READY).

    3. Turn the GTS 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. According to the display on the GTS, 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)
      Blower speed HI

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

      Tech Tips


      • 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 -

  3. INSPECT ENERGY CONSERVATION AIRFLOW CONTROL


    1. Inspect the energy conservation airflow control when the following conditions are met. [*1]

      Measurement Condition
      Item Condition
      Vehicle body Vehicle stopped in the shade
      Doors Fully open
      Blower speed Low or more
      A/C switch On

    2. Under the conditions in step [*1], set the air conditioning to AUTO mode and allow the blower vent temperature to stabilize (approximately 5 to 6 minutes).

    3. Check the energy conservation airflow control.

      A01MTRLC01
      *A for LHD *B for RHD

      1. When the S-FLOW switch is turned on, check that the indicator light illuminates, air stops blowing out of the rear registers and continues blowing out of the side and front center registers.

      2. When the S-FLOW switch is turned off, check that the indicator light turns off and the energy conservation airflow control is cancelled.