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Home >> Toyota >> 2024 >> Corolla LE >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 95 (Heating / Air Conditioning System (HEV) - Diagnostic Codes (2 Of 2), Circuit Tests & Symptom Tests) >> AIR CONDITIONING SYSTEM (for HV Model) >> Weak Blower Output [09/2022 - ] >> Procedure

Weak Blower Output [09/2022 - ]: Procedure

WARNING: This page is about a different variant/trim than selected.
  1. CHECK AIR CONDITIONING SYSTEM 
    1. Operate the blower switch with the following conditions met and check that the airflow volume changes.
      Blower Speed Condition
      LO → HI
      • Temperature setting: MAX COLD
      • Air outlet mode: FACE
      • A/C switch: Off

      OK

      Airflow volume increases.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    GO TO OTHER DIAGNOSIS PROCEDURE (Blower Motor Circuit) 

    Refer to Blower Motor Circuit [09/2022 - ] 

    Result: 

    OK 

    See step  2

  2. CHECK ECO MODE SETTING 
    1. Confirm that ECO HEAT/COOL switch (air conditioning control assembly) is set to off.
    2. Confirm that ECO drive mode is set to off.

      HINT: 

      When the ECO drive mode is set to ON, the air conditioning amplifier assembly performs minimal air conditioning control in order to promote the improvement of fuel economy. Ensure that the customer understands that the airflow volume will be decreased compared to normal operation.

      Control Control Summary
      Air Volume Control Sets the blower level to less.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  3

  3. CHECK CLEAN AIR FILTER 
    1. Visually check the clean air filter.

      OK

      The clean air filter is not dirty or clogging.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE CLEAN AIR FILTER 

    Refer to REMOVAL [06/2018 - ]

    Result: 

    OK 

    See step  4

  4. CHECK EVAPORATOR TEMP. SENSOR (NO. 1 COOLER THERMISTOR) 
    1. Check the installation condition of the evaporator temp. sensor (No. 1 cooler thermistor).

      OK

      Evaporator temp. sensor (No. 1 cooler thermistor) is installed correctly.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REINSTALL EVAPORATOR TEMP. SENSOR (NO. 1 COOLER THERMISTOR) 

    Refer to INSTALLATION [09/2022 - ]

    Result: 

    OK 

    See step  5

  5. CHECK ASPIRATOR PIPE 
    1. Check the installation condition of the aspirator pipe.

      OK

      The aspirator pipe is installed correctly.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE HEATER RADIATOR UNIT SUB-ASSEMBLY OR NO. 1 COOLER EVAPORATOR SUB-ASSEMBLY 

    Refer to REMOVAL [09/2022 - 11/2022] , or refer to REMOVAL [11/2022 - 09/2024] , or refer to REMOVAL [09/2024 - ]

    Result: 

    NG 

    INSTALL ASPIRATOR PIPE 

    Refer to REASSEMBLY [09/2022 - ]

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