AIR CONDITIONING SYSTEM(for Automatic Air Conditioning System) Blower Motor does not Operate

DESCRIPTION

If air does not flow from the front registers after the blower switch on the air conditioning control panel (radio and display receiver assembly)*1 or air conditioning control assembly*2 is operated, the following factors may be the cause.

Symptom Factor
No air flows from the registers

  • Air conditioning amplifier assembly malfunction

  • Blower motor with fan sub-assembly malfunction

  • Warm-up control

  • Engine coolant temperature sensor malfunction

  • Harness or connector

PROCEDURE


  1. CHECK AIR CONDITIONING SYSTEM (MANUAL MODE)


    1. Turn off the AUTO switch, operate the blower switch and check that the blower motor with fan sub-assembly can be operated manually.

      OK
      The blower motor with fan sub-assembly operates normally.
      Result
      Proceed to
      OK
      NG

    NG

    GO TO OTHER DIAGNOSIS PROCEDURE (Blower Motor Circuit) Click here

    OK

  2. READ VALUE USING GTS


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    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
      After warming up the engine, the temperature value displayed is within the range specified in the normal condition column.
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY Click here

    NG

    GO TO COOLING SYSTEM for 2AR-FE: Click here
    GO TO COOLING SYSTEM for A25A-FKS: Click here
    GO TO COOLING SYSTEM for 2GR-FKS: Click here