Weak Blower Output [11/2022 - ]: Procedure
WARNING: This page is about a different car, the 2025 Toyota Corolla Cross, 2024 Toyota Corolla Cross, and 2023 Toyota Corolla Cross. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK AIR CONDITIONING SYSTEM
- 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 [11/2022 - ]
Result:
OK
See step 2
- Operate the blower switch with the following conditions met and check that the airflow volume changes.
- CHECK CLEAN AIR FILTER
- Visually check the clean air filter.
Refer to REMOVAL [09/2021 - ]
OK
The clean air filter is not dirty or clogged.
Result
Proceed to OK NG
Result:
NG
REPLACE CLEAN AIR FILTER. Refer to REMOVAL [09/2021 - ]
Result:
OK
See step 3
- Visually check the clean air filter.
- CHECK NO. 1 COOLER THERMISTOR
- 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 [11/2022 - ]
Result:
OK
See step 4
- Check the installation condition of the No. 1 cooler thermistor.
- CHECK ASPIRATOR
- 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 [11/2022 - ]
Result:
NG
INSTALL ASPIRATOR. Refer to REASSEMBLY [11/2022 - ]
- Check the installation condition of the aspirator.