Weak Blower Output [10/2018 - ]: 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 [10/2018 - ]  

Result: 

OK 

See step  2

1. Check if the ECO mode indicator is off.

   OK

   The ECO mode indicator is off.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

See step  4

Result: 

NG 

See step  3

1. Operate the ECO switch (satellite switch set) and check that the ECO mode indicator turns off and the blower speed reduction is canceled.

   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.

   Result

   Result	Proceed to
   ECO mode indicator turns off and blower speed reduction is canceled	A
   ECO mode indicator turns off, but the blower speed reduction is not canceled	B
   ECO mode indicator does not turn off

Result: 

B 

GO TO ECO Switch Circuit. Refer to  ECO Switch Circuit [10/2018 - 07/2022]  , or refer to  ECO Switch Circuit [07/2022 - ]  

Result: 

A 

See step  4

1. Visually check the clean air filter.

   Refer to REMOVAL [10/2018 - ]

   OK

   The clean air filter is not dirty or clogged.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE CLEAN AIR FILTER. Refer to  REMOVAL [10/2018 - ] 

Result: 

OK 

See step  5

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. Refer to  INSTALLATION [10/2018 - 10/2020]  , or refer to  INSTALLATION [10/2020 - 07/2022]  , or refer to  INSTALLATION [07/2022 - ] 

Result: 

OK 

See step  6

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 [10/2018 - 07/2022]  , or refer to  REMOVAL [07/2022 - ] 

Result: 

NG 

INSTALL ASPIRATOR PIPE. Refer to  REASSEMBLY [10/2018 - 10/2020]  , or refer to  REASSEMBLY [10/2020 - 07/2022]  , or refer to  REASSEMBLY [07/2022 - ]