Weak Blower Output [06/2017 - 10/2020]: Procedure

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 [03/2017 - 10/2020]  

Result: 

OK 

See step  2

1. Check that ECO mode control is disabled (ECO mode indicator is not illuminated).
2. Operate the ECO switch assembly (electric parking brake switch assembly) and check that the ECO mode indicator illuminates and the blower speed is reduced.

   HINT: 

   • When ECO mode control is operating, the air conditioning amplifier assembly controls the air conditioning system to enhance fuel efficiency. Therefore, explain to the customer that, when ECO mode control is operating, the blower speed will be reduced.

     Control	Outline
     Blower Control	When the air conditioning system is in AUTO mode, the blower speed will be reduced to a certain speed. Additionally, if warm-up control is operating, the blower speed will be further reduced.
     Air Inlet Control	If the ambient temperature is a certain value or more, the air inlet mode will be changed to recirculation mode.

   • In some situations, ECO mode control may not operate even though it is enabled.
3. Operate the ECO switch assembly (electric parking brake switch assembly) and check that the ECO mode indicator turns off and the blower speed returns to normal.

   OK

   When the ECO switch assembly (electric parking brake switch assembly) is operated, ECO mode control is enabled/disabled and the blower speed is controlled.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

GO TO ECO Switch Circuit. Refer to  ECO Switch Circuit [06/2017 - ]  

Result: 

OK 

See step  3

1. Visually check the clean air filter.

   Refer to REMOVAL [03/2017 - ]

   OK

   The clean air filter is not dirty or clogged.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE CLEAN AIR FILTER. Refer to  REMOVAL [03/2017 - ] 

Result: 

OK 

See step  4

1. Check the installation condition of the No. 1 cooler thermistor.

   OK

   The No. 1 cooler thermistor is installed correctly.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

INSTALL NO. 1 COOLER THERMISTOR CORRECTLY. Refer to  INSTALLATION [03/2017 - ] 

Result: 

OK 

See step  5

1. Check the installation condition of the aspirator.

   OK

   The aspirator 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 [06/2017 - 09/2019]  , or refer to  REMOVAL [09/2019 - 03/2020]  , or refer to  REMOVAL [03/2020 - 10/2020] 

Result: 

NG 

INSTALL ASPIRATOR CORRECTLY. Refer to  REASSEMBLY [06/2017 - 10/2020]