AIR CONDITIONING SYSTEM Blower Motor does not Operate

DESCRIPTION

If no air is discharged even when the air conditioning control assembly is operated, the following causes are possible.

Symptom Factor
No air is discharged

  • Air conditioning amplifier assembly malfunction

  • Blower with fan motor sub-assembly malfunction

  • Air conditioning control assembly malfunction

  • Air conditioning filter clogging

  • Evaporator or heater core fin clogging

PROCEDURE


  1. CHECK AIR CONDITIONING SYSTEM (MANUAL MODE)


    1. Operate the manual mode to check that the blower with fan motor sub-assembly or rear blower with fan motor sub-assembly is operated normally.

      OK
      Blower with fan motor sub-assembly or rear blower with fan motor sub-assembly is operated normally with manual mode.
      Result
      Proceed to
      OK A
      NG (for Front) B
      NG (for Rear) C

    B

    GO TO BLOWER MOTOR CIRCUIT Click here

    C

    GO TO REAR BLOWER MOTOR CIRCUIT Click here

    A

  2. READ VALUE USING GTS (COOLANT TEMPERATURE)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Powertrain / Engine / Data List.

    5. Read the Data List according to the display on the GTS.


      Powertrain > Engine > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Coolant Temperature Engine coolant temperature Min.: -40°C (-40°F), Max.: 140°C (284°F) 75 to 100°C (167 to 212°F): After warming up

      This is the engine coolant temperature.

      Tech Tips


      • After warming up the engine, the engine coolant temperature will be 75 to 100°C (167 to 212°F).

      • After a long soak, the engine coolant temperature, intake air temperature and ambient air temperature will be approximately equal.

      • If the value is -40°C (-40°F), or higher than 135°C (275°F), the sensor circuit is open or shorted.

      • Check if the engine overheats if the value indicated is higher than 135°C (275°F).

      Powertrain > Engine > Data List
      Tester Display
      Coolant Temperature
      OK
      The temperature at the time of the warming up is satisfied the normal condition.
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY Click here

    NG

    GO TO COOLING SYSTEM for 8GR-FKS: Click here for V35A-FTS: Click here